VictoriaMetrics/docs/CHANGELOG.md

sort
16

CHANGELOG

The following tip changes can be tested by building VictoriaMetrics components from the latest commits according to the following docs:

• How to build single-node VictoriaMetrics
• How to build cluster version of VictoriaMetrics
• How to build vmagent
• How to build vmalert
• How to build vmauth
• How to build vmctl

tip

• SECURITY: serve /robots.txt content to disallow indexing of the exposed instances by search engines. See this issue for details.

• FEATURE: open source Graphite Render API. This API allows using VictoriaMetrics as a drop-in replacement for Graphite at both data ingestion and querying sides and reducing infrastructure costs by up to 10x comparing to Graphite. See this case study as an example.

• FEATURE: vmbackup: store backup creation and completion time in backup_complete.ignore file of backup contents. This is useful to determine point in time when backup was created and completed.

• FEATURE: vmbackupmanager: add created_at field to the output of /api/v1/backups API and vmbackupmanager backup list command. See this doc for data format details.

• FEATURE: deprecate -bigMergeConcurrency command-line flag, since improper configuration for this flag frequently led to uncontrolled growth of unmerged parts, which, in turn, could lead to queries slowdown and increased CPU usage. The concurrency for background merges can be controlled via -smallMergeConcurrency command-line flag, though it isn't recommended to do in general case.

• FEATURE: vmagent: support new filtering options filter and node_filter for consul service discovery. See this issue for details.

• FEATURE: vmctl: add support for the different time formats for --vm-native-filter-time-start and --vm-native-filter-time-end flags if the native binary protocol is used for migration. See this issue.

• FEATURE: vmui: integrate WITH template playground. See this issue.

• FEATURE: vmui: add a comparison of data from the previous day with data from the current day to the Cardinality Explorer. See this issue.

• FEATURE: vmui: display histogram metrics as a heatmap in the explore metrics tab. See this issue.

• FEATURE: vmalert: add support of recursive globs for -rule and -rule.templates by using ** in the glob pattern. See this issue.

• FEATURE: vmui: add the metric relabel playground feature to the vmui. See this issue.

• FEATURE: vmauth: add ability to proxy requests for unauthorized users. See this doc.

• FEATURE: vmauth: add ability to specify default route (default_url) for processing non-matched requests. See this issue.

• FEATURE: vmalert: support configuring of custom HTTP headers sent to notifiers on the Group level. See this issue.

• BUGFIX: reduce the probability of sudden increase in the number of small parts on systems with small number of CPU cores.

• BUGFIX: vmctl: fix performance issue when migrating data from VictoriaMetrics according to these docs. Add the ability to speed up the data migration via --vm-native-disable-retries command-line flag. See this issue.

• BUGFIX: MetricsQL: fix a panic when the duration in the query contains uppercase M suffix. Such a suffix isn't allowed to use in durations, since it clashes with a million suffix, e.g. it isn't clear whether rate(metric[5M]) means rate over 5 minutes, 5 months or 5 million seconds. See this and this issues.

• BUGFIX: vmalert: retry failed read request on the closed connection one more time. This improves rules execution reliability when connection between vmalert and datasource closes unexpectedly.

• BUGFIX: vmui: fix the display of the tenant selector. See this issue.

• BUGFIX: vmui: fix issue where vmui would freeze when adding a query that returned regular rows alongside a heatmap query.

• BUGFIX: vmalert: properly display an error when using query function for templating value of -external.alert.source flag. See this issue.

• BUGFIX: vmalert: properly return empty slices instead of nil for /api/v1/rules and /api/v1/alerts API handlers. See this issue.

v1.90.0

Released at 2023-04-06

Update note: this release contains backwards-incompatible change in storage data format, so the previous versions of VictoriaMetrics will exit with the unexpected number of substrings in the part name error when trying to run them on the data created by v1.90.0 or newer versions. The solution is to upgrade to v1.90.0 or newer releases

• SECURITY: upgrade base docker image (alpine) from 3.17.2 to 3.17.3. See alpine 3.17.3 release notes.

• SECURITY: upgrade Go builder from Go1.20.2 to Go1.20.3. See the list of issues addressed in Go1.20.3.

• FEATURE: open source Graphite Render API. This API allows using VictoriaMetrics as a drop-in replacement for Graphite at both data ingestion and querying sides and reducing infrastructure costs by up to 10x comparing to Graphite. See this case study as an example.

• FEATURE: release Windows binaries for single-node VictoriaMetrics, VictoriaMetrics cluster, vmbackup and vmrestore. See this, this and this issues. This release of VictoriaMetrics for Windows cannot delete snapshots due to Windows constraints. See this comment for details. This issue should be resolved in future releases.

• FEATURE: log metrics with truncated labels if the length of label value in the ingested metric exceeds -maxLabelValueLen. This should simplify debugging for this case.

• FEATURE: vmagent: show target URL when debugging target relabeling. This should simplify target relabel debugging a bit. See this pull request.

• FEATURE: vmagent: add support for VictoriaMetrics remote write protocol when sending / receiving data to / from Kafka. This protocol allows saving egress network bandwidth costs when sending data from vmagent to Kafka located in another datacenter or availability zone. See this feature request.

• FEATURE: vmagent: add -kafka.consumer.topic.concurrency command-line flag. It controls the number of Kafka consumer workers to use by vmagent. It should eliminate the need to start multiple vmagent instances to improve data transfer rate. See this feature request.

• FEATURE: vmagent: add support for Kafka producer and consumer on arm64 machines. See this issue.

• FEATURE: vmagent: delete unused buffered data at -remoteWrite.tmpDataPath directory when there is no matching -remoteWrite.url to send this data to. See this feature request.

• FEATURE: vmagent: add the ability for hot reloading of stream aggregation configs. See these docs and this feature request.

• FEATURE: check the contents of -relabelConfig and -streamAggr.config files additionally to -promscrape.config when single-node VictoriaMetrics runs with -dryRun command-line flag. This aligns the behaviour of single-node VictoriaMetrics with vmagent behaviour for -dryRun command-line flag.

• FEATURE: vmui: automatically draw a heatmap graph when the query selects a single histogram. This simplifies analyzing histograms. See this feature request.

• FEATURE: vmui: add support for drag'n'drop and paste from clipboard in the "Trace analyzer" page. See this pull request.

• FEATURE: vmui: hide messages longer than 3 lines in the trace. You can view the full message by clicking on the show more button. See this pull request.

• FEATURE: vmui: add the ability to manually input date and time when selecting a time range. See this pull request.

• FEATURE: vmui: updated usability and the search process in cardinality explorer. Made this process straightforward for user. See this pull request.

• FEATURE: vmui: add the ability to collapse/expand the legend. See this pull request.

• FEATURE: vmui: add tips for working with the graph and legend. See this pull request.

• FEATURE: vmui: add apply and cancel buttons to settings popup. See this issue.

• FEATURE: vmctl: automatically disable progress bar when TTY isn't available. See this issue.

• FEATURE: vmauth: add -configCheckInterval command-line flag, which can be used for automatic re-reading the -auth.config file. See this feature request.

• BUGFIX: prevent from slow snapshot creating under high data ingestion rate. See this issue.

• BUGFIX: vmauth: suppress proxy protocol parsing errors in case of EOF. Usually, the error is caused by health checks and is not a sign of an actual error.

• BUGFIX: vmui: fix displaying errors for each query. See this issue.

• BUGFIX: vmbackup: fix snapshot not being deleted in case of error during backup. See this issue.

• BUGFIX: stream aggregation: suppress series after dedup error message in logs when -remoteWrite.streamAggr.dedupInterval command-line flag is set at vmagent or when -streamAggr.dedupInterval command-line flag is set at single-node VictoriaMetrics.

• BUGFIX: allow using dashes and dots in environment variables names referred in config files via %{ENV-VAR.SYNTAX}. See these docs and this issue.

• BUGFIX: return back query performance scalability on hosts with big number of CPU cores. The scalability has been reduced in v1.86.0. See this issue.

• BUGFIX: MetricsQL: properly convert VictoriaMetrics historgram buckets to Prometheus histogram buckets when VictoriaMetrics histogram contain zero buckets. Previously these buckets were ignored, and this could lead to missing Prometheus histogram buckets after the conversion. Thanks to @zklapow for the fix.

• BUGFIX: vmagent: fix CPU and memory usage spikes when files pointed by file_sd_config cannot be re-read. See this_issue.

• BUGFIX: prevent unexpected merges on start-up when -storage.minFreeDiskSpaceBytes is set. See the issue.

• BUGFIX: properly support comma-separated filters inside retention filters. See this issue.

• BUGFIX: verify response code when fetching configuration files via HTTP. See this issue.

• BUGFIX: vmalert: replace empty labels with "" instead of "<no value>" during templating, as Prometheus does. See this issue.

• BUGFIX: vmctl: properly pass multiple filters from --vm-native-filter-match command-line flag to the data source. Previously filters from --vm-native-filter-match were only used to discover the metric names, and the metric names like __name__="metric_name" has been taken into account, while the remaining filters were ignored. For example --vm-native-src-addr={foo="bar",baz="abc"} may found metric_name{foo="bar",baz="abc"} and filter was treated as --vm-native-src-addr={__name__="metrics_name"}, e.g. foo="bar",baz="abc" filter was ignored. See this issue.

v1.89.1

Released at 2023-03-12

• BUGFIX: prevent from possible cannot unmarshal timeseries from rollupResultCache panic after the upgrade to v1.89.0.

v1.89.0

Released at 2023-03-12

Update note: this release can crash with cannot unmarshal timeseries from rollupResultCache panic after the upgrade from the previous releases. This issue can be fixed by removing caches stored on disk according to these docs. Another option is to upgrade to v1.89.1.

• SECURITY: upgrade Go builder from Go1.20.1 to Go1.20.2. See the list of issues addressed in Go1.20.2.

• FEATURE: vmctl: increase the default value for --remote-read-http-timeout command-line option from 30s (30 seconds) to 5m (5 minutes). This reduces the probability of timeout errors when migrating big number of time series. See this pull request.

• FEATURE: vmctl: migrate series one-by-one in vm-native mode. This allows better tracking the migration progress and resuming the migration process from the last migrated time series. See this pull request and this feature request.

• FEATURE: vmctl: add --vm-native-src-headers and --vm-native-dst-headers command-line flags, which can be used for setting custom HTTP headers during vm-native migration mode. Thanks to @baconmania for the pull request.

• FEATURE: vmctl: add --vm-native-src-bearer-token and --vm-native-dst-bearer-token command-line flags, which can be used for setting Bearer token headers for the source and the destination storage during vm-native migration mode. See this feature request.

• FEATURE: vmctl: add --vm-native-disable-http-keep-alive command-line flag to allow vmctl to use non-persistent HTTP connections in vm-native migration mode. Thanks to @baconmania for the pull request.

• FEATURE: vmalert: log number of configration files found for each specified -rule command-line flag.

• FEATURE: vmalert enterprise: concurrently read config files from S3, GCS or S3-compatible object storage. This significantly improves config load speed for cases when there are thousands of files to read from the object storage.

• BUGFIX: vmstorage: fix a bug, which could lead to incomplete or empty results for heavy queries selecting tens of thousands of time series. See this pull request.

• BUGFIX: vmselect: reduce memory usage and CPU usage when performing heavy queries. See this issue.

• BUGFIX: prevent from possible invalid memory address or nil pointer dereference panic during background merge. The issue has been introduced at v1.85.0. See this issue.

• BUGFIX: prevent from possible SIGBUS crash on ARM architectures (Raspberry Pi), which deny unaligned access to 8-byte words. Thanks to @oliverpool for narrowing down the issue and for the initial attempt to fix it.

• BUGFIX: VictoriaMetrics cluster: always return is_partial: true in partial responses. Previously partial responses could be returned as non-partial in some cases.

• BUGFIX: VictoriaMetrics cluster: properly take into account -rpc.disableCompression command-line flag at vmstorage. It was ignored since v1.78.0. See this pull request.

• BUGFIX: vmagent: fix panic when writing data to Kafka. The panic has been introduced in v1.88.0.

• BUGFIX: vmui: stop showing Please enter a valid Query and execute it error message on the first load of vmui.

• BUGFIX: vmui: properly process Run in VMUI button click in VictoriaMetrics datasource plugin for Grafana.

• BUGFIX: vmui: fix the display of the selected value for dropdowns on Explore page.

• BUGFIX: vmui: do not send step param for instant queries. See this issue.

• BUGFIX: vmauth: fix cannot serve http panic when plain HTTP request is sent to vmauth configured to accept requests over proxy protocol-encoded request (e.g. when vmauth runs with -httpListenAddr.useProxyProtocol command-line flag). The issue has been introduced at v1.87.0 when implementing this feature.

• BUGFIX: vmgateway: properly parse RSA public key discovered via JWK endpoint.

v1.88.1

Released at 2023-02-27

• FEATURE: add -snapshotCreateTimeout flag to allow configuring timeout for snapshot process. See this issue.

• FEATURE: expose vm_http_requests_total and vm_http_request_errors_total metrics for snapshot/* paths at VictoriaMetrics cluster vmstorage and VictoriaMetrics Single. See this issue.

• FEATURE: vmgateway: add the ability to discover keys for JWT verification via OpenID discovery endpoint. See these docs.

• FEATURE: add -internStringDisableCache command-line flag for disabling the cache for interned strings. This flag may be useful in some cases for reducing memory usage at the cost of higher CPU usage.

• FEATURE: add -internStringCacheExpireDuration command-line flag for controlling the lifetime of cached interned strings.

• BUGFIX: MetricsQL: fix panic when executing the query aggr_func(rollup*(some_value)). The panic has been introduced in v1.88.0.

• BUGFIX: vmagent: use the provided -remoteWrite.* auth options when determining whether the remote storage supports VictoriaMetrics remote write protocol. Previously the auth options were ignored. This was preventing from automatic switch to VictoriaMetrics remote write protocol.

• BUGFIX: vmagent: do not register vm_promscrape_config_* metrics if -promscrape.config flag is not used. Previously those metrics were registered and never updated, which was confusing and could trigger false-positive alerts.

• BUGFIX: vmctl: skip measurements with no fields when migrating data from influxdb. See this issue.

• BUGFIX: delete failed snapshot contents from disk on failed attempt to create snapshot. Previously failed snapshot contents could remain on disk in incomplete state. See this issue

v1.88.0

Released at 2023-02-24

• SECURITY: upgrade base docker image (alpine) from 3.17.1 to 3.17.2. See alpine 3.17.2 release notes.

• SECURITY: upgrade Go builder from Go1.20.0 to Go1.20.1. See the list of issues addressed in Go1.20.1.

• FEATURE: vmagent: add support for VictoriaMetrics remote write protocol. This protocol allows saving egress network bandwidth costs when sending data from vmagent to VictoriaMetrics located in another datacenter or availability zone. This also allows reducing disk IO under high load when vmagent starts queuing the collected data to disk when the remote storage is temporarily unavailable or cannot keep up with the data ingestion rate. See this feature request.

• FEATURE: vmagent: add support for Kuma Control Plane targets discovery aka kuma_sd_configs. See this issue.

• FEATURE: vmgateway: add the ability to verify JWT signature via JWKS endpoint. See these docs.

• FEATURE: vmauth: add the ability to limit the number of concurrent requests on a per-user basis via -maxConcurrentPerUserRequests command-line flag and via max_concurrent_requests config option. See this feature request and these docs.

• FEATURE: vmauth: automatically retry failing GET requests on all the configured backends. Previously the backend error has been immediately returned to the client without retrying the request on the remaining backends.

• FEATURE: vmauth: choose the backend with the minimum number of concurrently executed requests among the configured backends in a round-robin manner for serving the incoming requests. This allows spreading the load among backends more evenly, while improving the response time.

• FEATURE: vmalert enterprise: add ability to read alerting and recording rules from S3, GCS or S3-compatible object storage. See these docs.

• FEATURE: vmctl: automatically retry requests to remote storage if up to 5 errors occur during the data migration process. This should help continuing the data migration process on temporary errors. Previously vmctl was stopping after the first error. See this feature request.

• FEATURE: MetricsQL: support optional 2nd argument min, max or avg for rollup, rollup_delta, rollup_deriv, rollup_increase, rollup_rate and rollup_scrape_interval function. If the second argument is passed, then the function returns only the selected aggregation type. This change can be useful for situations where only one type of rollup calculation is needed. For example, rollup_rate(requests_total[1i], "max") would return only the max increase rates for requests_total metric per each interval between adjacent points on the graph. See this article for details.

• FEATURE: MetricsQL: support optional 2nd argument open, low, high, close for rollup_candlestick function. If the second argument is passed, then the function returns only the selected aggregation type.

• FEATURE: MetricsQL: add share(q) aggregate function.

• FEATURE: MetricsQL: add mad_over_time(m[d]) function for calculating the median absolute deviation over raw samples on the lookbehind window d. See this feature request.

• FEATURE: MetricsQL: add range_mad(q) function for calculating the median absolute deviation over points per each time series returned by q.

• FEATURE: MetricsQL: add range_zscore(q) function for calculating z-score over points per each time series returned from q.

• FEATURE: MetricsQL: add range_trim_outliers(k, q) function for dropping outliers located farther than k*range_mad(q) from the range_median(q). This should help removing outliers during query time at this issue.

• FEATURE: MetricsQL: add range_trim_zscore(z, q) function for dropping outliers located farther than z*range_stddev(q) from range_avg(q). This should help removing outliers during query time at this issue.

• FEATURE: vmui: show median instead of avg in graph tooltip and line legend, since median is more tolerant against spikes. See this issue.

• FEATURE: add -search.maxSeriesPerAggrFunc command-line flag, which can be used for limiting the number of time series MetricsQL aggregate functions can return in a single query. This flag can be useful for preventing OOMs when count_values function is improperly used.

• FEATURE: vmui: small UX improvements for mobile view. See this feature request and this pull request.

• FEATURE: add -search.logQueryMemoryUsage command-line flag for logging queries, which need more memory than specified by this command-line flag. See this feature request. Thanks to @michal-kralik for the idea and the intial implementation.

• FEATURE: allow setting zero value for -search.latencyOffset command-line flag. This may be needed in some cases. Previously the minimum supported value for -search.latencyOffset command-line flag was 1s.

• BUGFIX: vmagent: immediately cancel in-flight scrape requests during configuration reload when stream parsing mode is disabled. Previously vmagent could wait for long time until all the in-flight requests are completed before reloading the configuration. This could significantly slow down configuration reload. See this issue.

• BUGFIX: vmagent: do not wait for 2 seconds after the first unsuccessful attempt to scrape the target before performing the next attempt. This should improve scrape speed when the target closes http keep-alive connection between scrapes. See this and this issues.

• BUGFIX: vmagent: fix Azure service discovery inside Azure Container App. See this issue. Thanks to @MattiasAng for the fix!

• BUGFIX: do not put auxiliary directories scheduled for removal into snapshots. This should prevent from cannot create hard links from ...must-remove... errors when making snapshots / backups. See this issue.

• BUGFIX: prevent from possible data ingestion slowdown and query performance slowdown during background merges of big parts on systems with small number of CPU cores (1 or 2 CPU cores). The issue has been introduced in v1.85.0 when implementing this feature. See also this issue.

• BUGFIX: properly parse timestamps in milliseconds when ingesting data via OpenTSDB telnet put protocol. Previously timestamps in milliseconds were mistakenly multiplied by 1000. Thanks to @Droxenator for the pull request.

• BUGFIX: MetricsQL: do not add extrapolated points outside the real points when using interpolate() function. See this issue.

v1.87.5

Released at 2023-04-06

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• SECURITY: upgrade base docker image (alpine) from 3.17.2 to 3.17.3. See alpine 3.17.3 release notes.

• SECURITY: upgrade Go builder from Go1.20.2 to Go1.20.3. See the list of issues addressed in Go1.20.3.

• BUGFIX: MetricsQL: properly convert VictoriaMetrics historgram buckets to Prometheus histogram buckets when VictoriaMetrics histogram contain zero buckets. Previously these buckets were ignored, and this could lead to missing Prometheus histogram buckets after the conversion. Thanks to @zklapow for the fix.

• BUGFIX: vmagent: fix CPU and memory usage spikes when files pointed by file_sd_config cannot be re-read. See this_issue.

• BUGFIX: prevent unexpected merges on start-up when -storage.minFreeDiskSpaceBytes is set. See the issue.

• BUGFIX: properly support comma-separated filters inside retention filters. See this issue.

• BUGFIX: verify response code when fetching configuration files via HTTP. See this issue.

v1.87.4

Released at 2023-03-25

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• BUGFIX: prevent from slow snapshot creating under high data ingestion rate. See this issue.
• BUGFIX: vmauth: suppress proxy protocol parsing errors in case of EOF. Usually, the error is caused by health checks and is not a sign of an actual error.
• BUGFIX: vmbackup: fix snapshot not being deleted in case of error during backup. See this issue.
• BUGFIX: allow using dashes and dots in environment variables names referred in config files via %{ENV-VAR.SYNTAX}. See these docs and this issue.
• BUGFIX: return back query performance scalability on hosts with big number of CPU cores. The scalability has been reduced in v1.86.0. See this issue.

v1.87.3

Released at 2023-03-12

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• SECURITY: upgrade Go builder from Go1.20.1 to Go1.20.2. See the list of issues addressed in Go1.20.2.

• BUGFIX: vmstorage: fix a bug, which could lead to incomplete or empty results for heavy queries selecting tens of thousands of time series. See this pull request.

• BUGFIX: vmselect: reduce memory usage and CPU usage when performing heavy queries. See this issue.

• BUGFIX: prevent from possible invalid memory address or nil pointer dereference panic during background merge. The issue has been introduced at v1.85.0. See this issue.

• BUGFIX: prevent from possible SIGBUS crash on ARM architectures (Raspberry Pi), which deny unaligned access to 8-byte words. Thanks to @oliverpool for narrowing down the issue and for the initial attempt to fix it.

• BUGFIX: VictoriaMetrics cluster: always return is_partial: true in partial responses. Previously partial responses could be returned as non-partial in some cases.

• BUGFIX: VictoriaMetrics cluster: properly take into account -rpc.disableCompression command-line flag at vmstorage. It was ignored since v1.78.0. See this pull request.

• BUGFIX: vmagent: do not register vm_promscrape_config_* metrics if -promscrape.config flag is not used. Previously those metrics were registered and never updated, which was confusing and could trigger false-positive alerts.

• BUGFIX: vmctl: skip measurements with no fields when migrating data from influxdb. See this issue.

• BUGFIX: vmauth: fix cannot serve http panic when plain HTTP request is sent to vmauth configured to accept requests over proxy protocol-encoded request (e.g. when vmauth runs with -httpListenAddr.useProxyProtocol command-line flag). The issue has been introduced at v1.87.0 when implementing this feature.

v1.87.2

Released at 2023-02-24

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• SECURITY: upgrade base docker image (alpine) from 3.17.1 to 3.17.2. See alpine 3.17.2 release notes.

• SECURITY: upgrade Go builder from Go1.20.0 to Go1.20.1. See the list of issues addressed in Go1.20.1.

• BUGFIX: vmagent: immediately cancel in-flight scrape requests during configuration reload when stream parsing mode is disabled. Previously vmagent could wait for long time until all the in-flight requests are completed before reloading the configuration. This could significantly slow down configuration reload. See this issue.

• BUGFIX: vmagent: do not wait for 2 seconds after the first unsuccessful attempt to scrape the target before performing the next attempt. This should improve scrape speed when the target closes http keep-alive connection between scrapes. See this and this issues.

• BUGFIX: vmagent: fix Azure service discovery inside Azure Container App. See this issue. Thanks to @MattiasAng for the fix!

• BUGFIX: do not put auxiliary directories scheduled for removal into snapshots. This should prevent from cannot create hard links from ...must-remove... errors when making snapshots / backups. See this issue.

• BUGFIX: prevent from possible data ingestion slowdown and query performance slowdown during background merges of big parts on systems with small number of CPU cores (1 or 2 CPU cores). The issue has been introduced in v1.85.0 when implementing this feature. See also this issue.

• BUGFIX: properly parse timestamps in milliseconds when ingesting data via OpenTSDB telnet put protocol. Previously timestamps in milliseconds were mistakenly multiplied by 1000. Thanks to @Droxenator for the pull request.

• BUGFIX: MetricsQL: do not add extrapolated points outside the real points when using interpolate() function. See this issue.

v1.87.1

Released at 2023-02-09

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• FEATURE: vmalert: alerts state restore procedure was changed to become asynchronous. It doesn't block groups start anymore which significantly improves vmalert's startup time. This also means that -remoteRead.ignoreRestoreErrors command-line flag becomes deprecated now and will have no effect if configured. While previously state restore attempt was made for all the loaded alerting rules, now it is called only for alerts which became active after the first evaluation. See this issue.

• FEATURE: vmui: optimize VMUI for use from smartphones and tablets. See this feature request.

• FEATURE: vmui: add ability to search tenants in the drop-down list for the tenant selector. See this feature request.

• FEATURE: vmui: add avg/min/max/last values to line legends and tooltips for graphs. See this feature request.

• FEATURE: vmui: hide the default per-job resource usage dashboard if there is a custom dashboard exists at the directory specified via -vmui.customDashboardsPath command-line flag. See this feature request.

• BUGFIX: vmagent: fix panic in HashiCorp Nomad service discovery. Thanks to @mr-karan for the pull request.

• BUGFIX: vmalert: fix display of rules number per-group for groups with identical names in UI.

• BUGFIX: vmalert: prevent disabling state updates tracking per rule via setting values < 1. The minimum number of update states to track is now set to 1.

• BUGFIX: vmalert: properly update debug and update_entries_limit rule's params on config's hot-reload.

• BUGFIX: properly initialize the vm_concurrent_insert_current metric before exposing it. Previously this metric could be left uninitialized in some cases, e.g. its value was zero. This could lead to false alerts for the query avg_over_time(vm_concurrent_insert_current[1m]) >= vm_concurrent_insert_capacity. See this issue.

• BUGFIX: vmagent: immediately cancel in-flight scrape requests during configuration reload when using stream parsing mode. Previously vmagent could wait for long time until all the in-flight requests are completed before reloading the configuration. This could significantly slow down configuration reload. See this issue.

• BUGFIX: vmgateway: do not validate JWT signature if no public keys are provided. Previously this could result in the error setting up jwt verification error.

v1.87.0

Released at 2023-02-01

v1.87.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.87.x line will be supported for at least 12 months since v1.87.0 release

• FEATURE: stream aggregation: add the ability to de-duplicate input samples before aggregation via -streamAggr.dedupInterval and -remoteWrite.streamAggr.dedupInterval command-line options.

• FEATURE: vmui: add dark mode - it can be selected via settings menu in the top right corner. See this pull request.

• FEATURE: vmui: improve visual appearance of the top menu. See this feature request.

• FEATURE: vmui: embed fonts into binary instead of loading them from external sources. This allows using vmui in full from isolated networks without access to Internet. Thanks to @ScottKevill for the pull request.

• FEATURE: vmui: add ability to switch between tenants by selecting the needed tenant in the drop-down list at the top right corner of the UI. See this pull request.

• FEATURE: vmagent: reduce memory usage when sending stale markers for targets, which expose big number of metrics. See this and this issues.

• FEATURE: vmagent: add __meta_kubernetes_pod_container_id meta-label to the targets discovered via kubernetes_sd_configs. This label has been added in Prometheus starting from v2.42.0. See this feature request.

• FEATURE: vmagent: add __meta_azure_machine_size meta-label to the targets discovered via azure_sd_configs. This label has been added in Prometheus starting from v2.42.0. See this pull request.

• FEATURE: vmauth: allow limiting the number of concurrent requests sent to vmauth via -maxConcurrentRequests command-line flag. This allows controlling memory usage of vmauth and the resource usage of backends behind vmauth. See this feature request. Thanks to @dmitryk-dk for the initial implementation.

• FEATURE: allow using VictoriaMetrics components behind proxies, which communicate with the backend via proxy protocol. See this feature request. For example, vmauth accepts proxy protocol connections when it starts with -httpListenAddr.useProxyProtocol command-line flag.

• FEATURE: add -internStringMaxLen command-line flag, which can be used for fine-tuning RAM vs CPU usage in certain workloads. For example, if the stored time series contain long labels, then it may be useful reducing the -internStringMaxLen in order to reduce memory usage at the cost of increased CPU usage. See this issue.

• FEATURE: provide GOARCH=386 binaries for single-node VictoriaMetrics, vmagent, vmalert, vmauth, vmbackup and vmrestore components at releases page. See this feature request. Thanks to @denisgolius for the pull request.

• BUGFIX: fix a bug, which could prevent background merges for the previous partitions until restart if the storage didn't have enough disk space for final deduplication and down-sampling.

• BUGFIX: fix a bug, which could lead to increased CPU usage and disk IO usage when adding data to previous months and when the deduplication or downsampling is enabled. See this pull request.

• BUGFIX: VictoriaMetrics cluster: propagate all the timeout-related errors from vmstorage to vmselect. Previously some timeout errors weren't returned from vmselect to vmstorage. Instead, vmstorage could log the error and close the connection to vmselect, so vmselect was logging cryptic errors such as cannot execute funcName="..." on vmstorage "...": EOF.

• BUGFIX: vmui: add support for time zone selection for older versions of browsers. See this pull request.

• BUGFIX: vmagent: update API version for ec2_sd_configs to fix the issue with missing __meta_ec2_availability_zone_id attribute.

• BUGFIX: vmagent: properly return 200 OK HTTP status code when importing data via Pushgateway protocol. See this issue.

• BUGFIX: vmagent: do not add exported_ prefix to scraped metric names, which clash with the automatically generated metric names if honor_labels: true option is set in the scrape_config. See the this and this issues.

• BUGFIX: vmauth: allow re-entering authorization info in the web browser if the entered info was incorrect. Previously it was non-trivial to do via the web browser, since vmauth was returning 400 Bad Request instead of 401 Unauthorized http response code.

• BUGFIX: vmauth: always log the client address and the requested URL on proxying errors. Previously some errors could miss this information.

• BUGFIX: vmbackup: fix snapshot not being deleted after backup completion. This issue could result in unnecessary snapshots being stored, it is required to delete unnecessary snapshots manually. See the this issue.

• BUGFIX: VictoriaMetrics cluster: fix panic on top-level vmselect nodes of multi-level setup when the -replicationFactor flag is set and request contains trace query parameter. See this issue.

v1.86.2

Released at 2023-01-18

• SECURITY: vmbackup: do not expose basic auth passwords from -snapshot.createURL and -snapshot.deleteURL command-line flags in logs. Thanks to @toanju for the pull request.

• FEATURE: vmui: add ability to show custom dashboards at vmui by specifying a path to a directory with dashboard config files via -vmui.customDashboardsPath command-line flag. See this feature request and these docs.

• FEATURE: vmui: apply the step globally to all the displayed graphs. See this feature request.

• FEATURE: vmui: improve the appearance of graph lines by using more visually distinct colors. See this feature request.

• BUGFIX: do not slow down concurrently executed queries during assisted merges, since assisted merges already prioritize data ingestion over queries. The probability of assisted merges has been increased starting from v1.85.0 because of internal refactoring. This could result in slowed down queries when there is a plenty of free CPU resources. See this and this issues.

• BUGFIX: reduce the increased CPU usage at vmselect to v1.85.3 level when processing heavy queries. See this issue.

• BUGFIX: retention filters: fix FATAL: cannot locate metric name for metricID=...: EOF panic, which could occur when retention filters are enabled.

• BUGFIX: vmagent: properly cancel in-flight service discovery requests for consul_sd_configs and nomad_sd_configs when the service list changes. See this issue.

• BUGFIX: vmagent: dockerswarm_sd_configs: apply filters only to objects of the specified role. Previously filters were applied to all the objects, which could cause errors when different types of objects were used with filters that were not compatible with them. See this issue.

• BUGFIX: vmagent: suppress all the scrape errors when -promscrape.suppressScrapeErrors is enabled. Previously some scrape errors were logged even if -promscrape.suppressScrapeErrors flag was set.

• BUGFIX: vmagent: consistently put the scrape url with scrape target labels to all error logs for failed scrapes. Previously some failed scrapes were logged without this information.

• BUGFIX: vmagent: do not send stale markers to remote storage for series exceeding the configured series limit. See this issue.

• BUGFIX: vmagent: properly apply series limit when staleness tracking is disabled.

• BUGFIX: vmagent: reduce memory usage spikes when big number of scrape targets disappear at once. See this issue. Thanks to @lzfhust for the initial fix.

• BUGFIX: Pushgateway import: properly return 200 OK HTTP response code. See this issue.

• BUGFIX: MetricsQL: properly parse M and Mi suffixes as 1e6 multipliers in 1M and 1Mi numeric constants. See this issue. The issue has been introduced in v1.86.0.

• BUGFIX: vmui: properly display range query results at Table view. For example, up[5m] query now shows all the raw samples for the last 5 minutes for the up metric at the Table view. See this issue.

v1.86.1

Released at 2023-01-10

• BUGFIX: return correct query results over time series with gaps. The issue has been introduced in v1.86.0.
• BUGFIX: properly take into account the timeout passed by vmselect to vmstorage during query execution. This issue could result in the following error logs at vmstorage under load: cannot process vmselect request: cannot execute "search_v7": couldn't start executing the request in 0.000 seconds, since -search.maxConcurrentRequests=... concurrent requests are already executed. The issue has been introduced in v1.86.0.

v1.86.0

Released at 2023-01-10

It is recommended upgrading to VictoriaMetrics v1.86.1 because v1.86.0 contains a bug, which could lead to incorrect query results over time series with gaps.

Update note 1: This release changes the logic behind -maxConcurrentInserts command-line flag. Previously this flag was limiting the number of concurrent connections established from clients, which send data to VictoriaMetrics. Some of these connections could be temporarily idle. Such connections do not take significant CPU and memory resources, so there is no need in limiting their count. The new logic takes into account only those connections, which actively ingest new data to VictoriaMetrics and to vmagent. This means that the default -maxConcurrentInserts value should handle cases, which could require increasing the value in the previous releases. So it is recommended trying to remove the explicitly set -maxConcurrentInserts command-line flag after upgrading to this release and verifying whether this reduces CPU and memory usage.

Update note 2: The vm_concurrent_addrows_current and vm_concurrent_addrows_capacity metrics exported by vmstorage are replaced with vm_concurrent_insert_current and vm_concurrent_insert_capacity metrics in order to be consistent with the corresponding metrics exported by vminsert. Please update queries in dahsboards and alerting rules with new metric names if old metric names are used there.

• FEATURE: vmagent: add support for aggregation of incoming samples by time and by labels. See these docs and this feature request.

• FEATURE: vmagent: reduce memory usage when scraping big number of targets without the need to enable stream parsing mode.

• FEATURE: vmagent: add support for Prometheus-compatible target discovery for HashiCorp Nomad services via nomad_sd_configs. See this feature request. Thanks to @mr-karan for the implementation.

• FEATURE: vmagent: automatically pre-fetch metric_relabel_configs and the target labels when clicking on the debug metrics relabeling link at the http://vmagent:8429/targets page at the particular target. See these docs.

• FEATURE: vmui: add ability to explore metrics exported by a particular job / instance. See these docs and this feature request.

• FEATURE: allow passing partial RFC3339 date/time to time, start and end query args at querying APIs and export APIs. For example, 2022 is equivalent to 2022-01-01T00:00:00Z, while 2022-01-30T14 is equivalent to 2022-01-30T14:00:00Z. See these docs.

• FEATURE: MetricsQL: allow using unicode letters in identifiers. For example, температура{город="Киев"} is a valid MetricsQL expression now. Previously every non-ascii letters should be escaped with \ char when used inside MetricsQL expression: \т\е\м\п\е\р\а\т\у\р\а{\г\о\р\о\д="Киев"}. Now both expressions are equivalent. Thanks to @hzwwww for the pull request.

• FEATURE: relabeling: add support for keepequal and dropequal relabeling actions, which are supported by Prometheus starting from v2.41.0. These relabeling actions are almost identical to keep_if_equal and drop_if_equal relabeling actions supported by VictoriaMetrics since v1.38.0 - see these docs - so it is recommended sticking to keep_if_equal and drop_if_equal actions instead of switching to keepequal and dropequal.

• FEATURE: csvimport: support empty values for imported metrics. See this issue.

• FEATURE: vmalert: allow configuring the default number of stored rule's update states in memory via global -rule.updateEntriesLimit command-line flag or per-rule via rule's update_entries_limit configuration param. See these docs and this pull request.

• FEATURE: improve the logic benhind -maxConcurrentInserts command-line flag. Previously this flag was limiting the number of concurrent connections from clients, which write data to VictoriaMetrics or vmagent. Some of these connections could be idle for some time. These connections do not need significant amounts of CPU and memory, so there is no sense in limiting their count. The updated logic behind -maxConcurrentInserts limits the number of active insert requests, not counting idle connections.

• FEATURE: protect all the http endpoints with -httpAuth.* command-line flag. Previously endpoints protected by -*AuthKey command-line flags weren't protected by -httpAuth.*. This could complicate the proper security setup. See this issue.

• FEATURE: VictoriaMetrics cluster: add -maxConcurrentInserts and -insert.maxQueueDuration command-line flags to vmstorage, so they could be tuned if needed in the same way as at vminsert nodes.

• FEATURE: VictoriaMetrics cluster: limit the number of concurrently executed requests at vmstorage proportionally to the number of available CPU cores, since every request can saturate a single CPU core at vmstorage. Previously a single vmstorage could accept and start processing arbitrary number of concurrent requests received from big number of vmselect nodes. This could result in increased RAM, CPU and disk IO usage or event to out of memory crash at vmstorage side under high load. The limit can be fine-tuned if needed via -search.maxConcurrentRequests command-line flag at vmstorage according to these docs. vmstorage now exposes the following additional metrics at http://vmstorage:8482/metrics page:

  • vm_vmselect_concurrent_requests_capacity - the maximum number of requests allowed to execute concurrently
  • vm_vmselect_concurrent_requests_current - the current number of concurrently executed requests
  • vm_vmselect_concurrent_requests_limit_reached_total - the total number of requests, which were put in the wait queue when -search.maxConcurrentRequests concurrent requests are being executed
  • vm_vmselect_concurrent_requests_limit_timeout_total - the total number of canceled requests because they were sitting in the wait queue for more than -search.maxQueueDuration

• BUGFIX: vmui: properly update the step value in url after the step input field has been manually changed. This allows preserving the proper step when copy-n-pasting the url to another instance of web browser. See this issue.

• BUGFIX: vmui: properly update tooltip when quickly hovering multiple lines on the graph. See this issue.

• BUGFIX: properly parse floating-point numbers without integer or fractional parts such as .123 and 20. during data import. See this issue.

• BUGFIX: MetricsQL: properly parse durations with uppercase suffixes such as 10S, 5MS, 1W, etc. See this issue.

• BUGFIX: vmagent: fix a panic during target discovery when vmagent runs with -promscrape.dropOriginalLabels command-line flag. See this issue. The bug has been introduced in v1.85.0.

• BUGFIX: vmagent: dockerswarm_sd_configs: properly encode filters field. See this issue.

• BUGFIX: vmagent: fix possible resource leak after hot reload of the updated consul_sd_configs. See this issue.

• BUGFIX: vmagent: fix a panic in gce_sd_configs when the discovered instance has zero labels. See this issue. The issue has been introduced in v1.85.0.

• BUGFIX: properly return label names starting from uppercase such as CamelCaseLabel from /api/v1/labels. See this issue.

• BUGFIX: fix opentsdb HTTP endpoint not respecting -httpAuth.* flags. See this issue

• BUGFIX: consistently select the sample with the biggest value out of samples with identical timestamps during querying when the deduplication is enabled according to this feature request. Previously random samples could be selected during querying.

v1.85.3

Released at 2022-12-20

Update note 1: This and newer releases of VictoriaMetrics may return gaps for rate(m[d]) queries on short time ranges if [d] lookbehind window is set expliticly. For example, rate(http_requests_total[$__interval]). This reduces confusion level when the user expects the needed results from the query with explicitly set lookbehind window. See this issue. The previous gap filling behaviour can be restored by removing explicit lookbehind window [d] from the query, e.g. by substituting the rate(m[d]) with rate(m). See these docs for details.

• BUGFIX: fix error when searching for TSIDs by metricIDs in the previous indexdb: EOF error, which can occur during queries after unclean shutdown of VictoriaMetrics (e.g. via hardware reset, out of memory crash or kill -9). The error has been introduced in v1.85.2. See this issue.
• BUGFIX: VictoriaMetrics enterprise: expose proper values for vm_downsampling_partitions_scheduled and vm_downsampling_partitions_scheduled_size_bytes metrics, which were added at v1.78.0. See this feature request.
• BUGFIX: MetricsQL: never extend explicitly set lookbehind window for rate() function. This reduces the level of confusion when the user expects the needed results after explicitly seting the lookbehind window [d] in the query rate(m[d]). Previously VictoriaMetrics could silently extend the lookbehind window, so it covers at least two raw samples. Now this behavior works only if the lookbehind window in square brackets isn't set explicitly, e.g. in the case of rate(m). See this issue for details.
• BUGFIX: vmagent: respect -usePromCompatibleNaming flag if no relabeling or extra labels were set. See this issue for details.
• BUGFIX: vmui: fix the wrong legend when queries are hidden. See this issue.
• BUGFIX: vmui: fix incorrect time selection after the timezone change. See this pull request.

v1.85.2

Released at 2022-12-19

• FEATURE: support overriding of -search.latencyOffset value via URL param latency_offset when performing requests to /api/v1/query and /api/v1/query_range. See this issue.

• FEATURE: allow changing field names in JSON logs if VictoriaMetrics components are started with -loggerFormat=json command-line flags. The field names can be changed with the -loggerJSONFields command-line flag. For example -loggerJSONFields=ts:timestamp,msg:message would rename ts and msg fields on the output JSON to timestamp and message fields. See this feature request. Thanks to @michal-kralik for the pull request.

• FEATURE: vmagent: expose __meta_consul_tag_<tagname> and __meta_consul_tagpresent_<tagname> labels for targets discovered via consul_sd_configs. This simplifies converting Consul service tags to target labels with a simple relabeling rule:

  - action: labelmap
    regex: __meta_consul_tag_(.+)
  

  This resolves this StackOverflow question.

• BUGFIX: properly return query results for time series, which stop receiving new samples after the rotation of indexdb. Previously such time series could be missing in query results. See this issue. The issue has been introduced in v1.83.0.

• BUGFIX: allow specifying values bigger than 2GiB to the following command-line flag values on 32-bit architectures (386 and arm): -storage.minFreeDiskSpaceBytes and -remoteWrite.maxDiskUsagePerURL. Previously values bigger than 2GiB were incorrectly truncated on these architectures.

• BUGFIX: vmagent: stop dropping metric name by a mistake on the /metric-relabel-debug page.

v1.85.1

Released at 2022-12-14

It is recommended upgrading to VictoriaMetrics v1.85.2 because of the bug, which may result in incomplete query results for historical time series.

• FEATURE: vmalert: support $for or .For template variables in alert's annotations. See this issue.

• BUGFIX: DataDog protocol parser: do not re-use host and device fields from the previously parsed messages if these fields are missing in the currently parsed message. See this issue.

• BUGFIX: reduce CPU usage when the regex-based relabeling rules are applied to more than 100K unique Graphite metrics. See this issue. The issue was introduced in v1.82.0.

• BUGFIX: do not block merges of small parts by merges of big parts on hosts with small number of CPU cores. This issue could result in the increasing number of storage/small parts while big merge is in progress. This, in turn, could result in increased CPU usage and memory usage during querying, since queries need to inspect bigger number of small parts. The issue has been introduced in v1.85.0.

• BUGFIX: vmbackup: fix the The source request body for synchronous copy is too large and exceeds the maximum permissible limit (256MB) error when performing backups to Azure blob storage. See this issue.

v1.85.0

Released at 2022-12-11

It is recommended upgrading to VictoriaMetrics v1.85.2 because of the bug, which may result in incomplete query results for historical time series.

Update note 1: this release drops support for direct upgrade from VictoriaMetrics versions prior v1.28.0. Please upgrade to v1.84.0, wait until finished round 2 of background conversion line is emitted to log by single-node VictoriaMetrics or by vmstorage, and then upgrade to newer releases.

Update note 2: this release splits type="indexdb" metrics into type="indexdb/inmemory" and type="indexdb/file" metrics. This may break old dashboards and alerting rules, which contain label filter on {type="indexdb"}. Such label filter must be substituted with {type=~"indexdb.*"}, so it matches indexdb from the previous releases and indexdb/inmemory + indexdb/file from new releases. It is recommended upgrading to the latest available dashboards and alerting rules mentioned in these docs, since they already contain fixed label filters.

Update note 3: this release deprecates relabel_debug and metric_relabel_debug config options in scrape_configs. The -relabelDebug, -remoteWrite.relabelDebug and -remoteWrite.urlRelabelDebug command-line options are also deprecated. Use more powerful target-level relabel debugging and metric-level relabel debugging instead as documented here.

• FEATURE: vmagent: provide enhanced target-level and metric-level relabel debugging. See these docs and this issue.

• FEATURE: leave a sample with the biggest value for identical timestamps per each -dedup.minScrapeInterval discrete interval when the deduplication is enabled. See this issue.

• FEATURE: add -inmemoryDataFlushInterval command-line flag, which can be used for controlling the frequency of in-memory data flush to disk. The data flush frequency can be reduced when VictoriaMetrics stores data to low-end flash device with limited number of write cycles (for example, on Raspberry PI). See this feature request.

• FEATURE: expose additional metrics for indexdb and storage parts stored in memory and for indexdb parts stored in files (see storage docs for technical details):

  • vm_active_merges{type="storage/inmemory"} - active merges for in-memory storage parts
  • vm_active_merges{type="indexdb/inmemory"} - active merges for in-memory indexdb parts
  • vm_active_merges{type="indexdb/file"} - active merges for file-based indexdb parts
  • vm_merges_total{type="storage/inmemory"} - the total merges for in-memory storage parts
  • vm_merges_total{type="indexdb/inmemory"} - the total merges for in-memory indexdb parts
  • vm_merges_total{type="indexdb/file"} - the total merges for file-based indexdb parts
  • vm_rows_merged_total{type="storage/inmemory"} - the total rows merged for in-memory storage parts
  • vm_rows_merged_total{type="indexdb/inmemory"} - the total rows merged for in-memory indexdb parts
  • vm_rows_merged_total{type="indexdb/file"} - the total rows merged for file-based indexdb parts
  • vm_rows_deleted_total{type="storage/inmemory"} - the total rows deleted for in-memory storage parts
  • vm_assisted_merges_total{type="storage/inmemory"} - the total number of assisted merges for in-memory storage parts
  • vm_assisted_merges_total{type="indexdb/inmemory"} - the total number of assisted merges for in-memory indexdb parts
  • vm_parts{type="storage/inmemory"} - the total number of in-memory storage parts
  • vm_parts{type="indexdb/inmemory"} - the total number of in-memory indexdb parts
  • vm_parts{type="indexdb/file"} - the total number of file-based indexdb parts
  • vm_blocks{type="storage/inmemory"} - the total number of in-memory storage blocks
  • vm_blocks{type="indexdb/inmemory"} - the total number of in-memory indexdb blocks
  • vm_blocks{type="indexdb/file"} - the total number of file-based indexdb blocks
  • vm_data_size_bytes{type="storage/inmemory"} - the total size of in-memory storage blocks
  • vm_data_size_bytes{type="indexdb/inmemory"} - the total size of in-memory indexdb blocks
  • vm_data_size_bytes{type="indexdb/file"} - the total size of file-based indexdb blocks
  • vm_rows{type="storage/inmemory"} - the total number of in-memory storage rows
  • vm_rows{type="indexdb/inmemory"} - the total number of in-memory indexdb rows
  • vm_rows{type="indexdb/file"} - the total number of file-based indexdb rows

• FEATURE: DataDog parser: add device tag when it is passed in the device field is present in the series object of the input request. Thanks to @PerGon for the provided pull request.

• FEATURE: vmagent: improve service discovery performance when discovering big number of targets (10K and more).

• FEATURE: vmagent: allow using series_limit option for limiting the number of series a single scrape target generates in stream parsing mode. See this feature request.

• FEATURE: vmagent: allow using sample_limit option for limiting the number of metrics a single scrape target can expose in every response sent over stream parsing mode.

• FEATURE: vmagent: add exported_ prefix to metric names exported by scrape targets if these metric names clash with automatically generated metrics such as up, scrape_samples_scraped, etc. This prevents from corruption of automatically generated metrics. See this issue.

• FEATURE: vmagent: make the host label optional in DataDog data ingestion protocol. See this issue.

• FEATURE: VictoriaMetrics cluster: improve error message when the requested path cannot be properly parsed, so users could identify the issue and properly fix the path. Now the error message links to url format docs. See this issue.

• FEATURE: VictoriaMetrics enterprise cluster: add -storageNode.discoveryInterval command-line flag to vmselect and vminsert to control load on DNS servers when automatic discovery of vmstorage nodes is enabled. See this issue.

• FEATURE: VictoriaMetrics enterprise cluster: allow reading and updating the list of vmstorage nodes at vmselect and vminsert nodes via file. See automatic discovery of vmstorage for details.

• FEATURE: vmalert: reduce memory and CPU usage by up to 50% on setups with thousands of recording/alerting groups. See this issue.

• FEATURE: vmalert: add -remoteWrite.sendTimeout command-line flag, which allows configuring timeout for sending data to -remoteWrite.url. See this issue.

• FEATURE: vmctl: add ability to migrate data between VictoriaMetrics clusters with automatic tenants discovery. See these docs and this issue.

• FEATURE: vmctl: add ability to copy data from sources via Prometheus remote_read protocol. See these docs. The related issues: one and two.

• FEATURE: vmui: allow changing timezones for the requested data. See this issue.

• FEATURE: vmui: provide fast path for hiding results for all the queries except the given one by clicking eye icon with ctrl key pressed. See this feature request.

• FEATURE: MetricsQL: add range_trim_spikes(phi, q) function for trimming phi percent of the largest spikes per each time series returned by q. See these docs.

• FEATURE: MetricsQL: allow passing inf arg into limitk, topk, bottomk and other functions, which accept numeric arg, which limits the number of output time series. See this feature request.

• FEATURE: vmgateway: add support for JWT token signature verification. See these docs for details.

• FEATURE: put the version of VictoriaMetrics in the first message of query trace. This should simplify debugging.

• BUGFIX: vmagent: fix the The request did not have a subscription or a valid tenant level resource provider error when discovering Azure targets with azure_sd_configs. See this issue.

• BUGFIX: vmalert: properly pass HTTP headers during the alert state restore procedure. See this issue.

• BUGFIX: vmalert: properly specify rule evaluation step during the replay mode. The step value was previously overriden by -datasource.queryStep command-line flag.

• BUGFIX: vmalert: properly return the error message from remote-write failures. Before, error was ignored and only vmalert_remotewrite_errors_total was incremented.

• BUGFIX: vmui: fix sticky tooltip sizing, which could prevent from closing the tooltip. See this issue.

• BUGFIX: vmui: properly put multi-line queries in the url, so it could be copy-n-pasted and opened without issues in a new browser tab. Previously the url for multi-line query couldn't be opened. See this issue.

• BUGFIX: vmui: correctly handle up and down keypresses when editing multi-line queries. See this issue.

v1.84.0

Released at 2022-11-25

It is recommended upgrading to VictoriaMetrics v1.85.2 because of the bug, which may result in incomplete query results for historical time series.

• FEATURE: add support for Pushgateway data import format via /api/v1/import/prometheus url. See these docs and this issue. Thanks to @PerGon for the intial implementation.

• FEATURE: VictoriaMetrics cluster: add http://<vmselect>:8481/admin/tenants API endpoint for returning a list of registered tenants. See these docs for details.

• FEATURE: VictoriaMetrics enterprise: add -storageNode.filter command-line flag for filtering the discovered vmstorage nodes with arbitrary regular expressions. See this feature request.

• FEATURE: MetricsQL: allow using numeric values with K, Ki, M, Mi, G, Gi, T and Ti suffixes inside MetricsQL queries. For example 8Ki equals to 8*1024, while 8.2M equals to 8.2*1000*1000.

• FEATURE: MetricsQL: add range_normalize function for normalizing multiple time series into [0...1] value range. This function is useful for correlation analysis of time series with distinct value ranges. See this issue.

• FEATURE: MetricsQL: add range_linear_regression function for calculating simple linear regression over the input time series on the selected time range. This function is useful for predictions and capacity planning. For example, range_linear_regression(process_resident_memory_bytes) can predict future memory usage based on the past memory usage.

• FEATURE: MetricsQL: add range_stddev and range_stdvar functions.

• FEATURE: MetricsQL: optimize expr1 op expr2 query when expr1 returns an empty result. In this case there is no sense in executing expr2 for op not equal to or, since the end result will be empty according to PromQL series matching rules. See this issue. Thanks to @jianglinjian for pointing to this case.

• FEATURE: vmui: add the ability to upload/paste JSON to investigate the trace. See this issue and this pull request.

• FEATURE: vmui: reduce JS bundle size from 200Kb to 100Kb. See this pull request.

• FEATURE: vmui: add the ability to hide results of a particular query by clicking the eye icon. See this pull request.

• FEATURE: vmui: add copy button to row on Table view. The button copies row in MetricQL format. See this issue.

• FEATURE: vmui: add compact table view. See this issue.

• FEATURE: vmui: add the ability to "stick" a tooltip on the chart by clicking on a data point. See this issue and this pull request

• FEATURE: vmui: add the ability to set up series custom limits. See this issue.

• FEATURE: vmalert: add default alert list for vmalert's metrics. See alerts-vmalert.yml.

• FEATURE: vmagent: expose vmagent_relabel_config_*, vm_relabel_config_* and vm_promscrape_config_* metrics for tracking relabel and scrape configuration hot-reloads. See this issue.

• BUGFIX: MetricsQL: properly return an empty result from limit_offset if the offset arg exceeds the number of inner time series. See this issue.

• BUGFIX: vmagent: properly discover GCE zones when filter option is set at gce_sd_configs. See this issue.

• BUGFIX: vmui: properly display the requested graph on the requested time range when navigating from Prometheus URL in Grafana.

• BUGFIX: vmui: properly display wide tables. See this issue.

• BUGFIX: reduce CPU usage spikes and memory usage spikes under high data ingestion rate introduced in v1.83.0. See this issue.

v1.83.1

Released at 2022-11-10

It is recommended upgrading to VictoriaMetrics v1.85.2 because of the bug, which may result in incomplete query results for historical time series.

• FEATURE: vmagent: expose __meta_consul_partition label for targets discovered via consul_sd_configs in the same way as Prometheus 2.40 does.

• FEATURE: vmui: show the query trace in JSON view. See this issue. Thanks to @michal-kralik for the pull request.

• BUGFIX: VictoriaMetrics enterprise: fix a panic at vminsert when the discovered list of vmstorage nodes is changed during automatic vmstorage discovery. See this issue.

• BUGFIX: properly register new time series in per-day inverted index if they were ingested during the last 10 seconds of the day. See this issue. Thanks to @lmarszal for the bugreport and for the initial fix.

• BUGFIX: reduce the increased memory usage spikes for some workloads. The issue was introduced in v1.83.0.

• BUGFIX: properly accept OpenTSDB telnet put lines without tags without the need to specify the trailing whitespace. See this issue.

v1.83.0

Released at 2022-10-29

It is recommended upgrading to VictoriaMetrics v1.85.2 because of the bug, which may result in incomplete query results for historical time series.

Update note 1: the indexdb/tagFilters cache type at /metrics has been renamed to indexdb/tagFiltersToMetricIDs in order to make its puropose more clear.

Update note 2: vmalert: the crlfEscape template function becames obsolete starting from this release. It can be safely removed from alerting templates, since \n chars are properly escaped with other *Escape functions now. See this and this issue for details.

• FEATURE: VictoriaMetrics enterprise: add support for automatic vmstorage nodes discovering and updating at vmselect and vminsert. See these docs.

• FEATURE: VictoriaMetrics enterprise: allow configuring multiple retentions for distinct sets of time series. See these docs, this and this feature request.

• FEATURE: VictoriaMetric cluster enterprise: add support for multiple retentions for distinct tenants - see these docs and this and this feature request.

• FEATURE: allow limiting memory usage on a per-query basis with -search.maxMemoryPerQuery command-line flag. See this feature request.

• FEATURE: allow referring environment variables inside command-line flags via %{ENV_VAR} syntax. For example, if AUTH_KEY=top-secret environment variable is set, then -metricsAuthKey=%{AUTH_KEY} command-line flag is automatically expanded to -storageDataPath=top-secret at VictoriaMetrics startup. See these docs for details.

• FEATURE: allow referring environment variables inside other environment variables via %{ENV_VAR} syntax. For example, if A=a-%{B}, B=b-%{C} and C=c env vars are set, then VictoriaMetrics components automatically expand them to A=a-b-c, B=b-c and C=c on startup.

• FEATURE: vmagent: drop all the labels with __ prefix from discovered targets in the same way as Prometheus does according to this article. Previously the following labels were available during metric-level relabeling: __address__, __scheme__, __metrics_path__, __scrape_interval__, __scrape_timeout__, __param_*. Now these labels are available only during target-level relabeling. This should reduce CPU usage and memory usage for vmagent setups, which scrape big number of targets.

• FEATURE: vmagent: improve the performance for metric-level relabeling, which can be applied via metric_relabel_configs section at scrape_configs, via -remoteWrite.relabelConfig or via -remoteWrite.urlRelabelConfig command-line options.

• FEATURE: vmagent: allow specifying full url in scrape target addresses (aka __address__ label). This makes valid the following -promscrape.config:

  scrape_configs:
  - job_name: abc
    metrics_path: /foo/bar
    scheme: https
    static_configs:
    - targets:
      # the following targets are scraped by the provided full urls
      - 'http://host1/metric/path1'
      - 'https://host2/metric/path2'
      - 'http://host3:1234/metric/path3?arg1=value1'
      # the following target is scraped by <scheme>://host4:1234<metrics_path>
      - host4:1234
  

  See the corresponding issue.

• FEATURE: vmagent: allow controlling staleness tracking on a per-scrape_config basis by specifying no_stale_markers: true or no_stale_markers: false option in the corresponding scrape_config.

• FEATURE: vmalert: add strvalue and stripDomain template functions in order to improve compatibility with Prometheus.

• FEATURE: vmalert: add jsonEscape and htmlEscape template functions.

• FEATURE: vmui: limit the number of plotted series. This should prevent from browser crashes or hangs when the query returns big number of time series. See this feature request.

• FEATURE: vmui: reduce memory usage when querying big number of time series. See this issue.

• FEATURE: vmui: add responsive styles for small screens. See this issue and this pull request.

• FEATURE: log error if some environment variables referred at -promscrape.config via %{ENV_VAR} aren't found. This should prevent from silent using incorrect config files.

• FEATURE: immediately shut down VictoriaMetrics apps on the second SIGINT or SIGTERM signal if they couldn't be finished gracefully for some reason after receiving the first signal.

• FEATURE: improve the performance of /api/v1/series endpoint by eliminating loading of unused TSID data during the API call.

• FEATURE: vmbackupmanager: add functionality for automated restore from backup. See these docs.

• BUGFIX: MetricsQL: properly merge buckets with identical le values, but with different string representation of these values when calculating histogram_quantile and histogram_share. For example, http_request_duration_seconds_bucket{le="5"} and http_requests_duration_seconds_bucket{le="5.0"}. Such buckets may be returned from distinct targets. Thanks to @647-coder for the pull request.

• BUGFIX: vmalert: change severity level for log messages about failed attempts for sending data to remote storage from error to warn. The message for about all failed send attempts remains at error severity level.

• BUGFIX: vmalert: fix panic if vmalert runs with -clusterMode command-line flag in multitenant mode. The issue has been introduced in v1.82.0.

• BUGFIX: vmalert: properly escape string passed to quotesEscape template function, so it can be safely embedded into JSON string. This makes obsolete the crlfEscape function. See this and this issue.

• BUGFIX: vmagent: do not show invalid error message in Kubernetes service discovery: cannot parse WatchEvent json response: EOF. The invalid error message has been appeared in v1.82.0.

• BUGFIX: vmagent: properly add exported_ prefix to metric labels, which clashing with scrape target labels if honor_labels: true option isn't set in scrape_config. Previously some exported_ prefixes were missing in the resulting metric labels. See this issue. The issue has been introduced in v1.82.0.

• BUGFIX: vmselect: expose missing metric vm_cache_size_max_bytes{type="promql/rollupResult"} . This metric is used for monitoring rollup cache usage with the query vm_cache_size_bytes{type="promql/rollupResult"} / vm_cache_size_max_bytes{type="promql/rollupResult"} in the same way as this is done for other cache types.

v1.82.1

Released at 2022-10-14

• BUGFIX: vmui: automatically update graph, legend and url after the removal of query field. See this feature request and this comment.
• BUGFIX: vmalert: remove duplicate alertname JSON entry from generated alerts. See this issue. Thanks to @Howie59 for the fix!
• BUGFIX: vmalert: fix integration with Grafana via -vmalert.proxyURL, which has been broken in v1.82.0. See this issue.
• BUGFIX: vmbackup: set default region to us-east-1 if AWS_REGION environment variable isn't set. The issue was introduced in vmbackup v1.82.0. See this pull request.
• BUGFIX: vmbackupmanager: fix deletion of old backups at Azure blob storage.
• BUGFIX: MetricsQL: properly apply regex filters when searching for time series. Previously unexpected time series could be returned from regex filter. See this issue. The issue was introduced in v1.82.0.
• BUGFIX: vmagent: properly apply if section with regex filters. Previously unexpected metrics could be returned from if section. The issue was introduced in v1.82.0.

v1.82.0

Released at 2022-10-07

It isn't recommended to use VictoriaMetrics and vmagent v1.82.0 because of the bug, which may result in incorrect query results and relabeling results. Upgrade to v1.82.1 instead.

Update note 1: this release changes data format for /api/v1/export/native in incompatible way, so it cannot be imported into older version of VictoriaMetrics via /api/v1/import/native.

Update note 2: vmalert changes default value for command-line flag -datasource.queryStep from 0s to 5m. The change supposed to improve reliability of the rules evaluation when evaluation interval is lower than scraping interval.

Update note 3: vm_account_id and vm_project_id labels must be passed to tcp-based Graphite, InfluxDB and OpenTSDB endpoints at VictoriaMetrics cluster instead of undocumented VictoriaMetrics_AccountID and VictoriaMetrics_ProjectID labels when writing samples to the needed tenant. See these docs for details.

• FEATURE: VictoriaMetrics cluster: support specifying tenant ids via vm_account_id and vm_project_id labels. See these docs and this feature request.

• FEATURE: vmagent: improve relabeling performance by up to 3x for non-trivial regex values such as ([^:]+):.+, which can be used for extracting a host part from host:port label value.

• FEATURE: MetricsQL: improve performance by up to 4x for queries containing non-trivial regex filters such as {path=~"/foo/.+|/bar"}.

• FEATURE: improve performance scalability on systems with many CPU cores for /federate and /api/v1/export/... endpoints.

• FEATURE: sanitize metric names for data ingested via DataDog protocol according to DataDog metric naming. The behaviour can be disabled by passing -datadog.sanitizeMetricName=false command-line flag. Thanks to @PerGon for the pull request.

• FEATURE: add -usePromCompatibleNaming command-line flag to vmagent, to single-node VictoriaMetrics and to vminsert component of VictoriaMetrics cluster. This flag can be used for normalizing the ingested metric names and label names to Prometheus-compatible form. If this flag is set, then all the chars unsupported by Prometheus are replaced with _ chars in metric names and labels of the ingested samples. See this feature request.

• FEATURE: accept whitespace in metric names and tags ingested via Graphite plaintext protocol according to the specs. See this issue.

• FEATURE: check the correctess of raw sample timestamps stored on disk when reading them. This reduces the probability of possible silent corruption of the data stored on disk. This should help this and this issue.

• FEATURE: atomically delete directories with snapshots, parts and partitions at storage level. Previously such directories can be left in partially deleted state when the deletion operation was interrupted by unclean shutdown. This may result in cannot open file ...: no such file or directory error on the next start. The probability of this error was quite high when NFS or EFS was used as persistent storage for VictoriaMetrics data. See this issue.

• FEATURE: set the start arg to end - 5 minutes if isn't passed explicitly to /api/v1/labels and /api/v1/label/.../values. See this pull request.

• FEATURE: allow to define the minimum TLS version to use when accepting https requests to VictoriaMetrics components if -tls command-line flag is set. The minimum TLS version can be set via -tlsMinVersion command-line flag. See this feature request.

• FEATURE: vmctl: add vm-native-step-interval command line flag for vm-native mode. New option allows splitting the import process into chunks by time interval. This helps migrating data sets with high churn rate and provides better control over the process. See feature request.

• FEATURE: vmui: add top queries tab, which shows various stats for recently executed queries. See these docs and this feature request.

• FEATURE: vmui: move the "Execute Query" and "Add Query" buttons below the query fields, change icon for remove query. See this issue.

• FEATURE: vmui: set the maximum number of queries to 4, remove multi Y-axes, left one for all queries and dotted lines to indicate queries in the graph. See this issue.

• FEATURE: vmalert: add debug mode to the alerting rule settings for printing additional information into logs during evaluation. See debug param in alerting rule config.

• FEATURE: vmalert: add experimental feature for displaying last 10 states of the rule (recording or alerting) evaluation. The state is available on the Rule page, which can be opened by clicking on Details link next to Rule's name on the /groups page.

• FEATURE: vmalert: allow using extra labels in annotiations. See this feature request.

• FEATURE: vmalert: allow configuring authorization params per list of targets in vmalert's notifier config for static_configs. See this issue.

• FEATURE: vmalert: allow using {% raw %}{{$labels}}{% endraw %} for templating in command-line flag -external.alert.source. The change supposed to provide additional flexibility for generating alert's source link based on labels values.

• FEATURE: vmalert: add vm_account_id and vm_project_id labels to results of alerting and recording rules if -clusterMode is enabled. This improves multitenant support in vmalert.

• FEATURE: vmagent: minimize the time needed for reading large responses from scrape targets in stream parsing mode. This should reduce scrape durations for such targets as kube-state-metrics running in a big Kubernetes cluster.

• FEATURE: MetricsQL: add sort_by_label_numeric and sort_by_label_numeric_desc functions for numeric sort of input time series by the specified labels. See this feature request.

• FEATURE: vmbackup and vmrestore: retry GCS operations for up to 3 minutes on temporary failures. See this issue.

• FEATURE: vmbackup: add support for saving / restoring backups to / from Azure blob storage. See this feature request.

• FEATURE: vmbackupmanager: expose vm_backup_in_flight metric, which can be used for determining which backup types - latest, hourly, daily, weekly or monthly - are currently executed.

• FEATURE: vmgateway: add ability to extract JWT authorization token from non-standard HTTP header by passing it via -auth.httpHeader command-line flag. See this feature request.

• FEATURE: vmagent: expose __meta_ec2_region label for ec2_sd_config in the same way as Prometheus 2.39 does.

• FEATURE: vmagent: accept data ingestion requests via paths starting from /prometheus prefix in the same way as VictoriaMetrics does. For example, vmagent now accepts Prometheus remote_write data via both /api/v1/write and /prometheus/api/v1/write. This simplifies switching between single-node VictoriaMetrics and vmagent.

• FEATURE: vmagent: add external_labels from global section at -promscrape.config after the relabeling is applied to scraped metrics. This aligns with Prometheus behaviour. Previously the external_labels were added to scrape targets, so they could be modified during relabeling. See this issue.

• FEATURE: vmagent: allow specifying per--remoteWrite.url limits for on-disk size for pending data via -remoteWrite.maxDiskUsagePerURL command-line flag. Thanks to @rbizos for the pull request.

• FEATURE: VictoriaMetrics cluster: log clear error when multiple identical -storageNode command-line flags are passed to vmselect or to vminsert. Previously these components were crashed with cryptic panic metric ... is already registered in this case. See this issue.

• BUGFIX: do not export stale metrics via /federate api after the staleness markers. Previously such metrics were exported with NaN values. this could break some setups. See this issue.

• BUGFIX: export ininity numbers as "Infinity" strings at /api/v1/export, so they can be parsed by standard JSON parsers. Previously infinity numbers were exported as Inf values, which couldn't be parsed by standard JSON parsers. See this issue.

• BUGFIX: vmauth: properly handle request paths ending with / such as /vmui/. Previously vmui was dropping the traling /, which could prevent from using vmui via vmauth. See this issue.

• BUGFIX: vmagent: properly encode query params for aws signed requests, use %20 instead of + as api requires. See this issue.

• BUGFIX: vmagent: properly parse relabel config when regex ending with escaped $. See this issue.

• BUGFIX: MetricsQL: properly calculate rate_over_sum(m[d]) as sum_over_time(m[d])/d. Previously the sum_over_time(m[d]) could be improperly divided by smaller than d time range. See rate_over_sum() docs and this issue.

• BUGFIX: MetricsQL: properly calculate increase(m[d]) over slow-changing counters with values smaller than 100. Previously increase could return unexpectedly big results in this case. See the related issue and this pull request.

• BUGFIX: MetricsQL: ignore empty series when applying limit_offset. It should improve queries with additional filters by value in expressions like limit_offset(1,1, foo > 1).

• BUGFIX: MetricsQL: properly calculate quantiles_over_time when the lookbehind window contains only a single sample. Previously an empty result was incorrectly returned in this case.

• BUGFIX: vmui: fix RangeError: Maximum call stack size exceeded error when the query returns too many data points at Table view. See this pull request.

• BUGFIX: vmui: fix workaround for adding more queries via URL. See this issue.

• BUGFIX: vmalert: re-evaluate annotations per each alert evaluation. Previously, annotations were evaluated only on alert's value change. This could result in stale annotations in some cases described in this pull request.

• BUGFIX: prevent from excessive CPU usage when the storage enters read-only mode. The previous fix in v1.81.0 wasn't complete.

• BUGFIX: vmalert: change default value for command-line flag -datasource.queryStep from 0s to 5m. Param step is added by vmalert to every rule evaluation request sent to datasource. Before this change, step was equal to group's evaluation interval by default. Param step for instant queries defines how far VM can look back for the last written data point. The change supposed to improve reliability of the rules evaluation when evaluation interval is lower than scraping interval.

• BUGFIX: properly calculate vm_rows_scanned_per_query histogram exported at /metrics page of vmselect and single-node VictoriaMetrics. Previously it could return misleadingly high numbers for rollup functions, which scan only a few samples on the provided lookbehind window in square brackets. For example, increase(m[1d]) always scans only 2 rows (aka raw samples) per each returned time series.

v1.81.2

Released at 2022-09-08

• BUGFIX: VictoriaMetrics cluster: properly calculate query results at vmselect. See this issue. The issue has been introduced in v1.81.0.

v1.81.1

Released at 2022-09-02

It isn't recommended to use VictoriaMetrics cluster v1.81.1 because of the bug, which may result in incorrect query results. Upgrade to v1.81.2 instead.

• FEATURE: MetricsQL: evaluate q1, ..., qN in parallel when calculating union(q1, .., qN). Previously union args were evaluated sequentially. This could result in lower than expected performance.

• BUGFIX: VictoriaMetrics cluster: fix potential panic at vmselect under high load, which has been introduced in v1.81.0. See this issue.

v1.81.0

It isn't recommended to use VictoriaMetrics cluster v1.81.0 because of the bug, which may result in vmselect crashes under high load. Upgrade to v1.81.2 instead.

Released at 2022-08-31

Update note 1: vmalert by default hides values of -remoteWrite.url, -remoteRead.url and -datasource.url in logs and at http://vmalert:8880/flags for security reasons. See the corresponding SECURITY change in the Chagelog below for additional info.

Update note 2: vmalert by default points alert source url to /vmalert/alert?... aka web UI instead of /vmalert/api/v1/alert?... aka JSON handler. The old behavior can be achieved by setting {% raw %}-external.alert.source=vmalert/api/v1/alert?group_id={{.GroupID}}&alert_id={{.AlertID}}{% endraw %} command-line flag.

• SECURITY: vmalert: do not expose -remoteWrite.url, -remoteRead.url and -datasource.url command-line flag values in logs and at http://vmalert:8880/flags page by default, since they may contain sensitive data such as auth keys. This aligns vmalert behaviour with vmagent, which doesn't expose -remoteWrite.url command-line flag value in logs and at http://vmagent:8429/flags page by default. Specify -remoteWrite.showURL, -remoteRead.showURL and -datasource.showURL command-line flags for showing values for the corresponding -*.url flags in logs. Thanks to @mble for the pull request.

• SECURITY: upgrade base docker image (alpine) from 3.16.1 to 3.16.2. See alpine 3.16.2 release notes.

• FEATURE: return shorter error messages to Grafana and to other clients requesting /api/v1/query and /api/v1/query_range endpoints. This should simplify reading these errors by humans. The long error message with full context is still written to logs.

• FEATURE: add the ability to fine-tune the number of points, which can be generated per each matching time series during subquery evaluation. This can be done with the -search.maxPointsSubqueryPerTimeseries command-line flag. See this feature request.

• FEATURE: vmagent: improve the performance for relabeling rules with commonly used regular expressions in regex and if fields such as some_string, prefix.*, prefix.+, foo|bar|baz, .*foo.* and .+foo.+.

• FEATURE: vmagent: reduce CPU usage when discovering big number of Kubernetes targets with big number of labels and annotations.

• FEATURE: vmagent: add ability to accept multitenant data via OpenTSDB /api/put protocol at /insert/<tenantID>/opentsdb/api/put http endpoint if multitenant support is enabled at vmagent. Thanks to @chengjianyun for the pull request.

• FEATURE: monitoring: expose vm_hourly_series_limit_max_series, vm_hourly_series_limit_current_series, vm_daily_series_limit_max_series and vm_daily_series_limit_current_series metrics when -search.maxHourlySeries or -search.maxDailySeries limits are set. This allows alerting when the number of unique series reaches the configured limits. See these docs for details.

• FEATURE: VictoriaMetrics cluster: reduce the amounts of logging at vmstorage when vmselect connects/disconnects to vmstorage.

• FEATURE: VictoriaMetrics cluster: improve performance for heavy queries on systems with many CPU cores.

• FEATURE: vmagent: add ability to use {% raw %}{{label_name}}{% endraw %} placeholders in the replacement option of relabeling rules. This simplifies constructing label values from multiple existing label values. See these docs for details.

• FEATURE: vmagent: generate additional per-target metrics - scrape_series_limit, scrape_series_current and scrape_series_limit_samples_dropped if series limit is set according to these docs. This simplifies alerting on targets with the exceeded series limit. See these docs for details on these metrics.

• FEATURE: vmagent: add support for MX record types in dns_sd_configs in the same way as Prometheus 2.38 does.

• FEATURE: vmagent: add __meta_kubernetes_service_port_number meta-label for role: service in kubernetes_sd_configs in the same way as Prometheus 2.38 does.

• FEATURE: vmagent: add __meta_kubernetes_pod_container_image meta-label for role: pod in kubernetes_sd_configs in the same way as Prometheus 2.38 does.

• FEATURE: vmagent: retry HTTP requests after some wait time during service discovery and during target scrapes if the server returns 429 HTTP status code (aka Too many requests). See this issue.

• FEATURE: vmui: add a legend in the top right corner for shortcut keys. See this feature request.

• FEATURE: vmalert: add toTime() template function in the same way as Prometheus 2.38 does. See these docs.

• FEATURE: vmalert: add $alertID and $groupID template variables. These variables may be used for templating annotations or -external.alert.source command-line flag. See the full list of supported variables here.

• FEATURE: vmalert: add $activeAt template variable. See this feature request. See the full list of supported variables here. Thanks to @laixintao for the pull request.

• FEATURE: vmalert: point alert source to vmalert's UI at /vmalert/alert?... instead of JSON handler at /vmalert/api/v1/alert?.... This improves user experience. The old behavior can be achieved by setting {% raw %}-external.alert.source=vmalert/api/v1/alert?group_id={{.GroupID}}&alert_id={{.AlertID}}{% endraw %} command-line flag.

• BUGFIX: prevent from excess CPU usage when the storage enters read-only mode.

• BUGFIX: improve performance for requests to /api/v1/labels and /api/v1/label/.../values when the filter in the match[] query arg matches small number of time series. The performance for this case has been reduced in v1.78.0. See this and this issues.

• BUGFIX: increase the default limit on the number of concurrent merges for small parts from 8 to 16. This should help resolving potential issues with heavy data ingestion. See this comment from @lukepalmer .

• BUGFIX: MetricsQL: fix panic when incorrect arg is passed as phi into histogram_quantiles function. See this issue.

v1.80.0

Released at 2022-08-08

• FEATURE: vmalert: allow configuring additional HTTP request headers for -datasource.url, -remoteWrite.url and -remoteRead.url via -datasource.headers, -remoteWrite.headers and -remoteRead.headers command-line flags. Additional HTTP request headers also can be set on group level via headers param - see these docs and this issue.

• FEATURE: MetricsQL: execute left and right sides of certain operations in parallel. For example, q1 or q2, aggr_func(q1) <op> q2, q1 <op> aggr_func(q1). This may improve query performance if VictoriaMetrics has enough free resources for parallel processing of both sides of the operation. See this feature request.

• FEATURE: vmauth: allow multiple sections with duplicate username but with different password values at -auth.config file.

• FEATURE: add ability to push internal metrics (e.g. metrics exposed at /metrics page) to the configured remote storage from all the VictoriaMetrics components. See these docs.

• FEATURE: improve performance for heavy queries over big number of time series on systems with big number of CPU cores. See this issue. Thanks to @zqyzyq for the idea.

• FEATURE: improve performance for registering new time series in indexdb by up to 50%. Thanks to @ahfuzhang for the issue.

• FEATURE: vmagent: add ability to specify tenantID in target labels. In this case metrics from the given target are routed to the given __tenant_id__. See these docs and this feature request.

• FEATURE: vmagent: add service discovery for Yandex Cloud. See these docs and this feature request.

• FEATURE: vmui. Zoom in the graph by selecting the needed time range in the same way Grafana does. Hold ctrl (or cmd on MacOS) in order to move the graph to the left/right. Hold ctrl (or cmd on MacOS) and scroll up/down in order to zoom in/out the area under the cursor. See this feature request.

• BUGFIX: VictoriaMetrics cluster: fix potential panic in multi-level cluster setup when top-level vmselect is configured with -replicationFactor bigger than 1. See this issue.

• BUGFIX: vmagent: properly handle custom endpoint value in ec2_sd_configs. It was ignored since v1.77.0 because of a bug in the implementation of this feature request. See this issue.

• BUGFIX: vmagent: add missing __meta_kubernetes_ingress_class_name meta-label for role: ingress service discovery in Kubernetes. See this commit from Prometheus.

• BUGFIX: vmagent: allow stale responses from Consul service discovery (aka consul_sd_configs) by default in the same way as Prometheus does. This should reduce load on Consul when discovering big number of targets. Stale responses can be disabled by specifying allow_stale: false option in consul_sd_config. See this issue.

• BUGFIX: vmagent: dockerswarm_sd_configs: properly set __meta_dockerswarm_container_label_* labels instead of __meta_dockerswarm_task_label_* labels as Prometheus does. See this issue.

• BUGFIX: vmagent: set up metric to 0 for partial scrapes in stream parsing mode. Previously the up metric was set to 1 when at least a single metric has been scraped before the error. This aligns the behaviour of vmselect with Prometheus.

• BUGFIX: vmagent: restart all the scrape jobs during config reload after global section is changed inside -promscrape.config. See this issue.

• BUGFIX: vmagent: properly assume role with AWS ECS credentials. See this issue. Thanks to @transacid for the fix.

• BUGFIX: vmagent: do not split regex in relabeling rules into multiple lines if it contains groups. This fixes this issue.

• BUGFIX: MetricsQL: return series from q1 if q2 doesn't return matching time series in the query q1 ifnot q2. Previously series from q1 weren't returned in this case.

• BUGFIX: vmui: properly show date picker at Table tab. See this issue.

• BUGFIX: properly generate http redirects if -http.pathPrefix command-line flag is set. See this issue.

v1.79.12

Released at 2023-04-06

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: upgrade base docker image (alpine) from 3.17.2 to 3.17.3. See alpine 3.17.3 release notes.

• SECURITY: upgrade Go builder from Go1.20.2 to Go1.20.3. See the list of issues addressed in Go1.20.3.

• BUGFIX: vmagent: fix CPU and memory usage spikes when files pointed by file_sd_config cannot be re-read. See this_issue.

• BUGFIX: prevent unexpected merges on start-up when -storage.minFreeDiskSpaceBytes is set. See the issue.

• BUGFIX: verify response code when fetching configuration files via HTTP. See this issue.

v1.79.11

Released at 2023-03-12

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: upgrade Go builder from Go1.20.1 to Go1.20.2. See the list of issues addressed in Go1.20.2.

• BUGFIX: fix a bug, which could lead to incomplete or empty results for heavy queries selecting tens of thousands of time series. See this pull request.

• BUGFIX: VictoriaMetrics cluster: properly take into account -rpc.disableCompression command-line flag at vmstorage. It was ignored since v1.78.0. See this pull request.

• BUGFIX: prevent from possible SIGBUS crash on ARM architectures (Raspberry Pi), which deny unaligned access to 8-byte words. Thanks to @oliverpool for narrowing down the issue and for the initial attempt to fix it.

v1.79.10

Released at 2023-02-27

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• BUGFIX: prevent from high CPU usage on the first UTC hour of the data. The issue has been introduced in v1.79.5 when fixing this issue.

v1.79.9

Released at 2023-02-24

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: upgrade base docker image (alpine) from 3.17.1 to 3.17.2. See alpine 3.17.2 release notes.

• SECURITY: upgrade Go builder from Go1.20.0 to Go1.20.1. See the list of issues addressed in Go1.20.1.

• BUGFIX: properly parse timestamps in milliseconds when ingesting data via OpenTSDB telnet put protocol. Previously timestamps in milliseconds were mistakenly multiplied by 1000. Thanks to @Droxenator for the pull request.

v1.79.8

Released at 2023-02-03

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• BUGFIX: fix a bug, which could prevent background merges for the previous partitions until restart if the storage didn't have enough disk space for final deduplication and down-sampling.
• BUGFIX: vmagent: update API version for ec2_sd_configs to fix the issue with missing __meta_ec2_availability_zone_id attribute.
• BUGFIX: VictoriaMetrics cluster: fix panic on top-level vmselect nodes of multi-level setup when the -replicationFactor flag is set and request contains trace query parameter. See this issue.
• BUGFIX: vmagent: dockerswarm_sd_configs: apply filters only to objects of the specified role. Previously filters were applied to all the objects, which could cause errors when different types of objects were used with filters that were not compatible with them. See this issue.
• BUGFIX: vmagent: suppress all the scrape errors when -promscrape.suppressScrapeErrors is enabled. Previously some scrape errors were logged even if -promscrape.suppressScrapeErrors flag was set.
• BUGFIX: vmagent: consistently put the scrape url with scrape target labels to all error logs for failed scrapes. Previously some failed scrapes were logged without this information.
• BUGFIX: MetricsQL: properly parse M and Mi suffixes as 1e6 multipliers in 1M and 1Mi numeric constants. See this issue. The issue has been introduced in v1.79.7.

v1.79.7

Released at 2023-01-10

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• BUGFIX: properly parse floating-point numbers without integer or fractional parts such as .123 and 20. during data import. See this issue.
• BUGFIX: MetricsQL: properly parse durations with uppercase suffixes such as 10S, 5MS, 1W, etc. See this issue.
• BUGFIX: vmagent: dockerswarm_sd_configs: properly encode filters field. See this issue
• BUGFIX: allow specifying values bigger than 2GiB to the following command-line flag values on 32-bit architectures (386 and arm): -storage.minFreeDiskSpaceBytes and -remoteWrite.maxDiskUsagePerURL. Previously values bigger than 2GiB were incorrectly truncated on these architectures.
• BUGFIX: VictoriaMetrics enterprise: expose proper values for vm_downsampling_partitions_scheduled and vm_downsampling_partitions_scheduled_size_bytes metrics, which were added at v1.78.0. See this feature request.
• BUGFIX: DataDog protocol parser: do not re-use host and device fields from the previously parsed messages if these fields are missing in the currently parsed message. See this issue.

v1.79.6

Released at 2022-12-11

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: update Go builder from v1.19.3 to v1.19.4. See the changelog.

• SECURITY: update base Docker image for VictoriaMetrics components from Alpine 3.16.2 to Alpine v3.17.0. See the changelog.

• BUGFIX: vmagent: fix the The request did not have a subscription or a valid tenant level resource provider error when discovering Azure targets with azure_sd_configs. See this issue.

• BUGFIX: vmagent: properly discover GCE zones when filter option is set at gce_sd_configs. See this issue.

• BUGFIX: vmalert: properly specify rule evaluation step during the replay mode. The step value was previously overriden by -datasource.queryStep command-line flag.

• BUGFIX: vmalert: properly return the error message from remote-write failures. Before, error was ignored and only vmalert_remotewrite_errors_total was incremented.

• BUGFIX: MetricsQL: properly return an empty result from limit_offset if the offset arg exceeds the number of inner time series. See this issue.

v1.79.5

Released at 2022-11-10

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

Update note 1: vmalert: the crlfEscape template function becames obsolete starting from this release. It can be safely removed from alerting templates, since \n chars are properly escaped with other *Escape functions now. See this and this issue for details.

• SECURITY: update Go builder to v1.19.3. This fixes CVE-2022 security issue. See the changelog.

• BUGFIX: properly register new time series in per-day inverted index if they were ingested during the last 10 seconds of the day. See this issue. Thanks to @lmarszal for the bugreport and for the initial fix.

• BUGFIX: properly accept OpenTSDB telnet put lines without tags without the need to specify the trailing whitespace. See this issue.

• BUGFIX: MetricsQL: properly merge buckets with identical le values, but with different string representation of these values when calculating histogram_quantile and histogram_share. For example, http_request_duration_seconds_bucket{le="5"} and http_requests_duration_seconds_bucket{le="5.0"}. Such buckets may be returned from distinct targets. Thanks to @647-coder for the pull request.

• BUGFIX: vmalert: change severity level for log messages about failed attempts for sending data to remote storage from error to warn. The message for about all failed send attempts remains at error severity level.

• BUGFIX: vmalert: properly escape string passed to quotesEscape template function, so it can be safely embedded into JSON string. This makes obsolete the crlfEscape function. See this and this issue.

• BUGFIX: vmselect: expose missing metric vm_cache_size_max_bytes{type="promql/rollupResult"} . This metric is used for monitoring rollup cache usage with the query vm_cache_size_bytes{type="promql/rollupResult"} / vm_cache_size_max_bytes{type="promql/rollupResult"} in the same way as this is done for other cache types.

v1.79.4

Released at 2022-10-07

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

Update note 1: vmalert changes default value for command-line flag -datasource.queryStep from 0s to 5m. The change supposed to improve reliability of the rules evaluation when evaluation interval is lower than scraping interval.

• FEATURE: expose vmagent_remotewrite_queues metric and use it in alerting rules in order to improve the detection of remote storage connection saturation. See this pull request.

• BUGFIX: do not export stale metrics via /federate api after the staleness markers. Previously such metrics were exported with NaN values. this could break some setups. See this issue.

• BUGFIX: vmauth: properly handle request paths ending with / such as /vmui/. Previously vmui was dropping the traling /, which could prevent from using vmui via vmauth. See this issue.

• BUGFIX: vmagent: properly encode query params for aws signed requests, use %20 instead of + as api requires. See this issue.

• BUGFIX: MetricsQL: properly calculate rate_over_sum(m[d]) as sum_over_time(m[d])/d. Previously the sum_over_time(m[d]) could be improperly divided by smaller than d time range. See rate_over_sum() docs and this issue.

• BUGFIX: MetricsQL: properly calculate increase(m[d]) over slow-changing counters with values smaller than 100. Previously increase could return unexpectedly big results in this case. See the related issue and this pull request.

• BUGFIX: MetricsQL: ignore empty series when applying limit_offset. It should improve queries with additional filters by value in expressions like limit_offset(1,1, foo > 1).

• BUGFIX: MetricsQL: properly calculate quantiles_over_time when the lookbehind window contains only a single sample. Previously an empty result was incorrectly returned in this case.

• BUGFIX: vmui: fix RangeError: Maximum call stack size exceeded error when the query returns too many data points at Table view. See this pull request.

• BUGFIX: vmalert: re-evaluate annotations per each alert evaluation. Previously, annotations were evaluated only on alert's value change. This could result in stale annotations in some cases described in this pull request.

• BUGFIX: prevent from excessive CPU usage when the storage enters read-only mode. The previous fix in v1.79.3 wasn't complete.

• BUGFIX: vmalert: change default value for command-line flag -datasource.queryStep from 0s to 5m. Param step is added by vmalert to every rule evaluation request sent to datasource. Before this change, step was equal to group's evaluation interval by default. Param step for instant queries defines how far VM can look back for the last written data point. The change supposed to improve reliability of the rules evaluation when evaluation interval is lower than scraping interval.

• BUGFIX: properly calculate vm_rows_scanned_per_query histogram exported at /metrics page of vmselect and single-node VictoriaMetrics. Previously it could return misleadingly high numbers for rollup functions, which scan only a few samples on the provided lookbehind window in square brackets. For example, increase(m[1d]) always scans only 2 rows (aka raw samples) per each returned time series.

v1.79.3

Released at 2022-08-30

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: vmalert: do not expose -remoteWrite.url, -remoteRead.url and -datasource.url command-line flag values in logs and at http://vmalert:8880/flags page by default, since they may contain sensitive data such as auth keys. This aligns vmalert behaviour with vmagent, which doesn't expose -remoteWrite.url command-line flag value in logs and at http://vmagent:8429/flags page by default. Specify -remoteWrite.showURL, -remoteRead.showURL and -datasource.showURL command-line flags for showing values for the corresponding -*.url flags in logs. Thanks to @mble for the pull request.

• SECURITY: upgrade base docker image (alpine) from 3.16.1 to 3.16.2. See alpine 3.16.2 release notes.

• BUGFIX: prevent from excess CPU usage when the storage enters read-only mode.

• BUGFIX: improve performance for requests to /api/v1/labels and /api/v1/label/.../values when the filter in the match[] query arg matches small number of time series. The performance for this case has been reduced in v1.78.0. See this and this issues.

• BUGFIX: increase the default limit on the number of concurrent merges for small parts from 8 to 16. This should help resolving potential issues with heavy data ingestion. See this comment from @lukepalmer .

• BUGFIX: MetricsQL: fix panic when incorrect arg is passed as phi into histogram_quantiles function. See this issue.

v1.79.2

Released at 2022-08-08

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• BUGFIX: VictoriaMetrics cluster: fix potential panic in multi-level cluster setup when top-level vmselect is configured with -replicationFactor bigger than 1. See this issue.
• BUGFIX: vmagent: properly handle custom endpoint value in ec2_sd_configs. It was ignored since v1.77.0 because of a bug in the implementation of this feature request.
• BUGFIX: vmagent: add missing __meta_kubernetes_ingress_class_name meta-label for role: ingress service discovery in Kubernetes. See this commit from Prometheus.
• BUGFIX: vmagent: allow stale responses from Consul service discovery (aka consul_sd_configs) by default in the same way as Prometheus does. This should reduce load on Consul when discovering big number of targets. Stale responses can be disabled by specifying allow_stale: false option in consul_sd_config. See this issue.
• BUGFIX: vmagent: dockerswarm_sd_configs: properly set __meta_dockerswarm_container_label_* labels instead of __meta_dockerswarm_task_label_* labels as Prometheus does. See this issue.
• BUGFIX: vmagent: set up metric to 0 for partial scrapes in stream parsing mode. Previously the up metric was set to 1 when at least a single metric has been scraped before the error. This aligns the behaviour of vmselect with Prometheus.
• BUGFIX: vmagent: restart all the scrape jobs during config reload after global section is changed inside -promscrape.config. See this issue.
• BUGFIX: vmagent: properly assume role with AWS ECS credentials. See this issue. Thanks to @transacid for the fix.
• BUGFIX: vmagent: do not split regex in relabeling rules into multiple lines if it contains groups. This fixes this issue.
• BUGFIX: MetricsQL: return series from q1 if q2 doesn't return matching time series in the query q1 ifnot q2. Previously series from q1 weren't returned in this case.
• BUGFIX: vmui: properly show date picker at Table tab. See this issue.
• BUGFIX: properly generate http redirects if -http.pathPrefix command-line flag is set. See this issue.

v1.79.1

Released at 2022-08-02

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

• SECURITY: upgrade base docker image (alpine) from 3.16.0 to 3.16.1 . See alpine 3.16.1 release notes.

v1.79.0

Released at 2022-07-14

v1.79.x is a line of LTS releases (e.g. long-time support). It contains important up-to-date bugfixes. The v1.79.x line will be supported for at least 12 months since v1.79.0 release

Update note 1: this release introduces backwards-incompatible changes to vm_partial_results_total metric by changing its labels to be consistent with vm_requests_total metric. If you use alerting rules or Grafana dashboards, which rely on this metric, then they must be updated. The official dashboards for VictoriaMetrics don't use this metric.

Update note 2: vmalert adds /vmalert/ prefix to web urls according to this issue. This may affect vmalert instances with non-empty -http.pathPrefix command-line flag. After the update, configuring this flag is no longer needed. Here's why.

Update note 3: this release introduces backwards-incompatible changes to communication protocol between vmselect and vmstorage nodes in cluster version of VictoriaMetrics because of added ability to query vmselect data from other vmselect nodes - see these docs, so read requests to vmselect will fail until the upgrade is complete. These errors will stop after all the vmselect and vmstorage nodes are updated to the new release. It is safe to downgrade to previous releases at any time.

Update note 4: this release removes support of deprecated in 1.70.0 param extra_filter_labels from vmalert's groups definition. This deprecated param was replaced with params.

Update note 5: this release changes naming for published linux binaries at releases. Now names for binaries for all the supported platforms match the following template - $(APP_NAME)-$(GOOS)-$(GOARCH)-$(VERSION).tar.gz. For example, victoria-metrics-linux-amd64-v1.79.0.tar.gz. Previously linux binaries didn't have $(GOOS) part, e.g. they had the name victoria-metrics-amd64-v1.79.0.tar.gz. Please update automation scripts for upgrading VictoriaMetrics releases according to this change.

• FEATURE: vmagent: add azure_sd_configs service discovery mechanism. It allows discovering Virtual Machines at Azure Cloud. See this issue.
• FEATURE: vmalert: deprecate alert's status link /api/v1/<groupID>/<alertID>/status in favour of api/v1/alert?group_id=<group_id>&alert_id=<alert_id>". The old alert's status link is still supported, but will be removed in future releases. See this issue.
• FEATURE: cluster version of VictoriaMetrics: add support for querying lower-level vmselect nodes from upper-level vmselect nodes. This makes possible to build multi-level cluster setups for global querying view and HA purposes without the need to use Promxy. See these docs and this issue.
• FEATURE: add -search.setLookbackToStep command-line flag, which enables InfluxDB-like gap filling during querying. See these docs for details.
• FEATURE: vmui: add an UI for query tracing. It can be enabled by clicking trace query checkbox and re-running the query. See this feature request.
• FEATURE: vmagent: add -remoteWrite.headers command-line option for specifying optional HTTP headers to send to the configured -remoteWrite.url. For example, -remoteWrite.headers='Foo:Bar^^Baz:x' would send Foo: Bar and Baz: x HTTP headers with every request to -remoteWrite.url. See this feature request.
• FEATURE: vmagent: push per-target scrape_samples_limit metric to the configured -remoteWrite.url if sample_limit option is set for this target in scrape_configs. See this feature request.
• FEATURE: vmagent: attach node-level labels to kubernetes_sd_config targets if attach_metadata: {"node": true} is set for role: endpoints and role: endpointslice. This is a feature backport from Prometheus 2.37 - see this pull request.
• FEATURE: vmagent: add ability to specify additional HTTP headers to send to scrape targets via headers section in scrape_configs. This can be used when the scrape target requires custom authorization and authentication like in this stackoverflow question. For example, the following config instructs sending My-Auth: top-secret and TenantID: FooBar headers with each request to http://host123:8080/metrics:

scrape_configs:
- job_name: foo
  headers:
  - "My-Auth: top-secret"
  - "TenantID: FooBar"
  static_configs:
  - targets: ["host123:8080"]

• FEATURE: add ability to pass limit query arg to api/v1/series endpoint. This can be used if only a sample of up to limit series must be returned from the endpoint. See this feature request and these docs.

• FEATURE: query tracing: show timestamps in query traces in human-readable format (aka RFC3339 in UTC timezone) instead of milliseconds since Unix epoch. For example, 2022-06-27T10:32:54.506Z instead of 1656325974506. This improves traces' readability.

• FEATURE: improve performance of /api/v1/series requests, which return big number of time series.

• FEATURE: VictoriaMetrics cluster: improve query performance when replication is enabled.

• FEATURE: MetricsQL: properly handle partial counter resets in remove_resets function. Now remove_resets(sum(m)) should returns the expected increasing line when some time series matching m disappear on the selected time range. Previously such a query would return horizontal line after the disappeared series.

• FEATURE: expose vm_next_retention_seconds metric at http://victoriametrics:8428/metrics, which shows the number of seconds left until the next indexdb rotation. Thanks to @guidao for the pull request.

• FEATURE: expose additional histogram metrics at http://victoriametrics:8428/metrics, which may help understanding query workload:

  • vm_rows_read_per_query - the number of raw samples read per query.
  • vm_rows_scanned_per_query - the number of raw samples scanned per query. This number can exceed vm_rows_read_per_query if step query arg passed to /api/v1/query_range is smaller than the lookbehind window set in square brackets of rollup function. For example, if increase(some_metric[1h]) is executed with the step=5m, then the same raw samples on a hour time range are scanned 1h/5m=12 times. See this article for details.
  • vm_rows_read_per_series - the number of raw samples read per queried series.
  • vm_series_read_per_query - the number of series read per query.

• FEATURE: publish binaries for FreeBSD and OpenBSD at releases page.

• FEATURE: vmui: allow selecting the needed columns at table view. This functionaly may help when the selected time series contain many different labels. See this feature request and this pull request.

• BUGFIX: consistently name binaries at releases page in the form $(APP_NAME)-$(GOOS)-$(GOARCH)-$(VERSION).tar.gz. For example, victoria-metrics-linux-amd64-v1.79.0.tar.gz. Previously the $(GOOS) part was missing in binaries for Linux.

• BUGFIX: vmalert: allow using __name__ label (aka metric name) in alerting annotations. For example:

{% raw %}

{{ $labels.__name__ }}: Too high connection number for "{{ $labels.instance }}

{% endraw %}

• BUGFIX: limit max memory occupied by the cache, which stores parsed regular expressions. Previously too long regular expressions passed in MetricsQL queries could result in big amounts of used memory (e.g. multiple of gigabytes). Now the max cache size for parsed regexps is limited to a a few megabytes.
• BUGFIX: MetricsQL: properly handle partial counter resets when calculating rate, irate and increase functions. Previously these functions could return zero values after partial counter resets until the counter increases to the last value before partial counter reset. See this issue.
• BUGFIX: MetricsQL: properly calculate histogram_quantile over Prometheus buckets with unexpected values. See this issue.
• BUGFIX: MetricsQL: properly evaluate timezone_offset function over time range covering time zone offset switches. See this issue.
• BUGFIX: vmagent: properly add service-level labels (__meta_kubernetes_service_*) to discovered targets for role: endpointslice in kubernetes_sd_config. Previously these labels were missing. See this issue.
• BUGFIX: vmagent: make sure that stale markers are generated with the actual timestamp when unsuccessful scrape occurs. This should prevent from possible time series overlap on scrape target restart in dynmaic envirnoments such as Kubernetes.
• BUGFIX: vmagent: properly reload changed -promscrape.config file when -promscrape.configCheckInterval option is set. The changed config file wasn't reloaded in this case since v1.69.0. See this pull request. Thanks to @ttyv for the fix.
• BUGFIX: vmagent: properly set Host header during target scraping when proxy_url is set to http proxy. Previously the Host header was set to the proxy hostname instead of the target hostname. See this issue.
• BUGFIX: VictoriaMetrics cluster: assume that the response is complete if -search.denyPartialResponse is enabled and up to -replicationFactor - 1 vmstorage nodes are unavailable. See this issue.
• BUGFIX: vmselect: update vm_partial_results_total metric labels to be consistent with vm_requests_total labels.
• BUGFIX: accept tags without values when reading data in DataDog format. Thanks to @PerGon for the pull request.
• BUGFIX: vmui: properly pass the end of the selected time range to time query arg to /api/v1/query when displaying the requested data in JSON and table views. Previously the time query arg wasn't set, so /api/v1/query was always returning query results for the current time regardless of the selected time range. See this issue.
• BUGFIX: vmui: allow clicking on the suggestion from autocomplete list. See this issue.
• BUGFIX: vmui: apply the selected time range in date picker only after clicking the Apply button. See this issue.

v1.78.1

Released at 2022-07-08

Update notes: it is recommended clearing caches after the upgrade from v1.78.0 in order to immediately fix the issue for newly ingested data. Otherwise the issue may exist for newly ingested data for up to a day after the upgrade.

• BUGFIX: properly register time series in per-day inverted index. Previously some series could miss registration in the per-day inverted index. This could result in missing time series during querying. The issue has been introduced in v1.78.0. See this and this issues.

v1.78.0

Released at 2022-06-20

Warning (2022-07-03): VictoriaMetrics v1.78.0 contains a bug, which may result in missing time series during queries. It is recommended upgrading to v1.78.1, which fixes the bug.

Update notes: this release introduces backwards-incompatible changes to communication protocol between vmselect and vmstorage nodes in cluster version of VictoriaMetrics because of added query tracing, so read requests to vmselect will fail until the upgrade is complete. These errors will stop after all the vmselect and vmstorage nodes are updated to the new release. It is safe to downgrade to previous releases.

• SECURITY: add -flagsAuthKey command-line flag for protecting /flags endpoint from unauthorized access. Though this endpoint already hides values for command-line flags with key and password substrings in their names, other sensitive information could be exposed there. See This issue.

• FEATURE: support query tracing, which allows determining bottlenecks during query processing. See these docs and this feature request.

• FEATURE: vmui: add cardinality tab, which can help identifying the source of high cardinality and high churn rate issues. See this and this feature requests and these docs.

• FEATURE: vmui: small UX enhancements according to this feature request.

• FEATURE: allow overriding default limits for in-memory cache indexdb/tagFilters via flag -storage.cacheSizeIndexDBTagFilters. See this issue.

• FEATURE: add support of lowercase and uppercase relabeling actions in the same way as Prometheus 2.36.0 does. See this issue.

• FEATURE: add ability to change the indexdb rotation timezone offset via -retentionTimezoneOffset command-line flag. Previously it was performed at 4am UTC time. This could lead to performance degradation in the middle of the day when VictoriaMetrics runs in time zones located too far from UTC. Thanks to @cnych for the pull request.

• FEATURE: limit the number of background merge threads on systems with big number of CPU cores by default. This increases the max size of parts, which can be created during background merge when -storageDataPath directory has limited free disk space. This may improve on-disk data compression efficiency and query performance. The limits can be tuned if needed with -smallMergeConcurrency and -bigMergeConcurrency command-line flags. See this pull request.

• FEATURE: accept optional limit query arg at /api/v1/labels and /api/v1/label/.../values for limiting the numbef of sample entries returned from these endpoints. See these docs.

• FEATURE: optimize performance for /api/v1/labels and /api/v1/label/.../values endpoints when match[], extra_label or extra_filters[] query args are passed to these endpoints. This should help with this issue.

• FEATURE: vmalert: support limit param per-group for limiting number of produced samples per each rule. Thanks to @Howie59 for implementation.

• FEATURE: vmalert: remove dependency on Internet access at web API pages. Previously the functionality and the layout of these pages was broken without Internet access. See shis issue.

• FEATURE: vmalert: send alerts to the configured notifiers in parallel. Previously alerts were sent to notifiers sequentially. This could delay sending pending alerts when notifier blocks on the currently sent alert.

• FEATURE: vmagent: implement the http://vmagent:8429/service-discovery page in the same way as Prometheus does. This page shows the original labels for all the discovered targets alongside the resulting labels after the relabeling. This simplifies service discovery debugging.

• FEATURE: vmagent: remove dependency on Internet access at http://vmagent:8429/targets page. Previously the page layout was broken without Internet access. See shis issue.

• FEATURE: vmagent: add support for kubeconfig_file option at kubernetes_sd_configs. It may be useful for Kubernetes monitoring by vmagent outside Kubernetes cluster. See this issue.

• FEATURE: vmagent: expose /api/v1/status/config endpoint in the same way as Prometheus does. See these docs.

• FEATURE: vmagent: add -promscrape.suppressScrapeErrorsDelay command-line flag, which can be used for delaying and aggregating the logging of per-target scrape errors. This may reduce the amounts of logs when vmagent scrapes many unreliable targets. See this feature request. Thanks to @jelmd for the initial implementation.

• FEATURE: vmagent: add -promscrape.cluster.name command-line flag, which allows proper data de-duplication when the same target is scraped from multiple vmagent clusters. See this issue.

• FEATURE: vmagent: add action: graphite relabeling rules optimized for extracting labels from Graphite-style metric names. See these docs and this feature request.

• FEATURE: VictoriaMetrics enterprise: expose vm_downsampling_partitions_scheduled and vm_downsampling_partitions_scheduled_size_bytes metrics, which can be used for tracking the progress of initial downsampling for historical data. See this feature request.

• FEATURE: VictoriaMetrics cluster: do not spend up to 5 seconds when trying to connect to unavailable vmstorage nodes. This should improve query latency when some of vmstorage nodes aren't available. Expose vm_tcpdialer_addr_available{addr="..."} metric at http://vmselect:8481/metrics for determining whether the given addr is available for establishing new connections. See this comment.

• FEATURE: VictoriaMetrics cluster: add -vmstorageDialTimeout command-line flags to vmselect and vminsert for tuning the maximum duration for connection estabilishing to vmstorage nodes. This should help resolving this issue.

• BUGFIX: support for data ingestion in DataDog format from legacy clients / agents. See this pull request. Thanks to @elProxy for the fix.

• BUGFIX: vmagent: do not expose vm_promscrape_service_discovery_duration_seconds_bucket metric for unused service discovery types. This reduces the number of metrics exported at http://vmagent:8429/metrics. See this issue.

• BUGFIX: vmalert: properly apply alert_relabel_configs relabeling rules to -notifier.config according to these docs. Thanks to @spectvtor for the bugfix.

• BUGFIX: vmalert: properly add Content-Encoding: snappy, Content-Type: application/x-protobuf and X-Prometheus-Remote-Write-Version: 0.1.0 request headers when vmalert sends evaluated recording rules' data to -remoteWrite.url. These headers are needed by some remote storage systems in order to properly decode snappy-encoded request body. See this and this pull requests. Thanks to @manji-0 for th fix.

• BUGFIX: deny background merge when the storage enters read-only mode, e.g. when free disk space becomes lower than -storage.minFreeDiskSpaceBytes. Background merge needs additional disk space, so it could result in no space left on device errors. See this issue.

• BUGFIX: vmui: properly apply the selected time range when auto-refresh is enabled. See this issue.

• BUGFIX: vmui: properly update the url with vmui state when new query is entered. See this issue.

• BUGFIX: Graphite render API: properly calculate sample timestamps when moving*() functions such as movingAverage() are applied over summarize().

• BUGFIX: limit the end query arg value to +2 days in the future at /api/v1/* endpoints, because VictoriaMetrics doesn't allow storing samples with timestamps bigger than +2 days in the future. This should help resolving this issue.

• BUGFIX: properly register time series in per-day inverted index during the first hour after indexdb rotation. Previously this could lead to missing time series during querying if these time series stopped receiving new samples during the first hour after indexdb rotation. See this issue.

• BUGFIX: do not register new series when -storage.maxHourlySeries or -storage.maxDailySeries limits were reached. Previously samples for new series weren't added to the database when the cardinality limit was reached, but series were still registered in the inverted index (aka indexdb). This could lead to unbound indexdb growth during high churn rate.

v1.77.2

Released at 2022-05-21

• FEATURE: vmalert: support reusable templates for rules annotations. The path to the template files can be specified via -rule.templates flag. See more about this feature here. Thanks to @AndrewChubatiuk for the pull request. See this feature request.

• FEATURE: vmalert: expose vmalert_iteration_interval_seconds metric at http://vmalert:8880/metrics. This metric shows the configured per-group evaluation interval. See this feature request.

• FEATURE: vmctl: add influx-prometheus-mode command-line flag, which allows to restore the original time series written from Prometheus into InfluxDB during data migration from InfluxDB to VictoriaMetrics. See this feature request. Thanks to @mback2k for the pull request.

• FEATURE: vmagent: add ability to specify AWS service name when issuing requests to AWS api. See this feature request. Thanks to @transacid for the pull request.

• BUGFIX: vmagent: fix a bug, which could lead to incomplete discovery of scrape targets in Kubernetes (aka kubernetes_sd_config). the bug has been introduced in v1.77.0.

• BUGFIX: vmalert: support scalar result type in response. See this issue.

• BUGFIX: vmalert: support strings in humanize.* template function in the same way as Prometheus does. See this issue.

• BUGFIX: vmalert: proxy /rules requests to vmalert from Grafana's alerting UI. This removes errors in Grafana's UI for Grafana versions older than 8.5.*. See this issue

• BUGFIX: vmalert: do not add /api/v1/query suffix to -datasource.url if -remoteRead.disablePathAppend command-line flag is set. Previously this flag was applied only to -remoteRead.url, which could confuse users.

• BUGFIX: vmalert: prevent from possible resource leak on config update, which could lead to the slowdown of vmalert over time. See this pull request.

• BUGFIX: MetricsQL: do not return values from label_value() function if the original time series has no values at the selected timestamps.

• BUGFIX: VictoriaMetrics cluster: limit the number of concurrently established connections from vmselect to vmstorage. This should prevent from potentially high spikes in the number of established connections after temporary slowdown in connection handshake procedure between vmselect and vmstorage because of spikes in workload. See this issue.

• BUGFIX: vmctl: fix build for Solaris / SmartOS. See this issue.

v1.77.1

Released at 2022-05-07

• FEATURE: vmagent: add ability to specify filters for Availability Zones in ec2_sd_config via az_filters section. This section can contain AZ-specific set of filters in the same way as the existing filters section, which is used for filtering EC2 instances. The list of supported AZ-specific filters is available here.

• FEATURE: vmagent: expose vmagent_remotewrite_global_rows_pushed_before_relabel_total and vmagent_remotewrite_rows_pushed_after_relabel_total metrics at http://vmagent:8429/metrics, which can be used for monitoring the rate of rows (aka samples) pushed to remote storage before and after the relabeling via -remoteWrite.relabelConfig and -remoteWrite.urlRelabelConfig. See relabeling docs for details.

• FEATURE: vmctl: add ability to skip db label during InfluxDB data import when influx-skip-database-label option is used. See this pull request. Thanks to @mback2k .

• BUGFIX: vmagent: properly process passwords and secrets specified in the file pointed by -promscrape.config command-line flag. All the passwords and secrets were mistakenly replaced with <secret> string in v1.77.0. See this and this issue.

• BUGFIX: vmagent: rename vmagent_remote_write_rate_limit_reached_total metric to vmagent_remotewrite_rate_limit_reached_total, so its name is consistent with the rest of vmagent_remotewrite_ metrics.

• BUGFIX: vmagent: rename promscrape_stale_samples_created_total metric to vm_promscrape_stale_samples_created_total, so its name is consistent with the rest of vm_promscrape_ metrics.

• BUGFIX: vmctl: properly import InfluxDB measurements if they contain db tag. Previously this could result in incomplete import of measurmenet tags. See this pull request. Thanks to @mback2k for the bugfix.

• BUGFIX: vmui: do not reset the selected relative time range when entering new query. See this issue.

• BUGFIX: vmbackup: disallow writing backups to -storageDataPath directory, since this directory is managed solely by VictoriaMetrics or vmstorage. Other apps shouldn't write into this directory. See this issue.

• BUGFIX: do not allow setting -retentionPeriod smaller than one day, since VictoriaMetrics doesn't support properly such small retention periods. See this issue.

• BUGFIX: VictoriaMetrics cluster: do not drop samples routed to readonly vmstorage nodes if -dropSamplesOnOverload command-line flag is set. Try re-routing them to healthy vmstorage nodes instead. See this issue.

v1.77.0

Released at 2022-05-05

• FEATURE: vmagent: add support for sending data to remote storage with AWS sigv4 authorization. See this feature request.

• FEATURE: vmagent: allow filtering targets by target url and by target labels with time series selector on http://vmagent:8429/targets page. This may be useful when vmagent scrapes big number of targets. See this feature request.

• FEATURE: vmagent: reduce -promscrape.config reload duration when the config contains big number of jobs (aka scrape_configs sections) and only a few of them are changed. Previously all the jobs were restarted. Now only the jobs with changed configs are restarted. This should reduce the probability of data miss because of slow config reload. See this issue.

• FEATURE: vmagent: improve service discovery speed for big number of scrape targets. This should help when vmagent discovers big number of targets (e.g. thousands) in Kubernetes cluster. The service discovery speed now should scale with the number of CPU cores available to vmagent.

• FEATURE: vmagent: add ability to attach node-level labels and annotations to discovered Kubernetes pod targets in the same way as Prometheus 2.35 does. See this feature request and this pull request.

• FEATURE: vmagent: add support for tls_config and proxy_url options at oauth2 section in the same way as Prometheus does. See oauth2 docs.

• FEATURE: vmagent: add support for min_version option at tls_config section in the same way as Prometheus does. See tls_config docs.

• FEATURE: vmagent: expose vmagent_remotewrite_rate_limit metric at http://vmagent:8429/metrics, which can be used for alerting rules such as rate(vmagent_remotewrite_conn_bytes_written_total) / vmagent_remotewrite_rate_limit > 0.8 when -remoteWrite.rateLimit command-line flag is set. See this pull request.

• FEATURE: vmalert: add support for DNS-based discovery for notifiers in the same way as Prometheus does (aka dns_sd_configs). See these docs and this feature request.

• FEATURE: vmalert: add -replay.disableProgressBar command-line flag, which allows disabling progressbar in rules' backfilling mode. See this issue.

• FEATURE: allow specifying TLS cipher suites for incoming https requests via -tlsCipherSuites command-line flag. See this feature request.

• FEATURE: allow specifying TLS cipher suites for mTLS connections between cluster components via -cluster.tlsCipherSuites command-line flag. See these docs.

• FEATURE: vmstorage: add -snapshotsMaxAge command-line flag for automatic removal of snapshots older than the given age.

• FEATURE: vmui: show an empty graph on the selected time range when there is no data on it. Previously No data to show placeholder was shown instead of the graph in this case. This prevented from zooming and scrolling of such a graph.

• FEATURE: vmui: show the selected last N minutes/hours/days in the top right corner. Previously the start - end duration was shown instead, which could be hard to interpret. See this feature request.

• FEATURE: vmui: execute the query when enter button is pressed in the same way as Prometheus does. Multi-line query can be entered by pressing shift-enter in the query input field.

• FEATURE: expose vm_indexdb_items_added_total and vm_indexdb_items_added_size_bytes_total counters at /metrics page, which can be used for monitoring the rate for addition of new entries in indexdb (aka inverted index) alongside the total size in bytes for the added entries. See this feature request.

• FEATURE: vmctl: show data pocessing speed during data migration.

• FEATURE: MetricsQL: add drop_common_labels() function, which drops common label="name" pairs from the passed time series. See these docs.

• FEATURE: MetricsQL: add tlast_change_over_time(m[d]) function, which returns the timestamp of the last change of m on the given lookbehind window d. See these docs.

• FEATURE: leave the last raw sample per each -dedup.minScrapeInterval discrete interval when the deduplication is enabled. This aligns better with the staleness rules in Prometheus comparing to the previous behaviour when the first sample per each -dedup.minScrapeInterval was left.

• FEATURE: VictoriaMetrics cluster: add ability to disable peer TLS certificate verification with -cluster.tlsInsecureSkipVerify command-line flag. See mTLS docs for details. See this feature request.

• FEATURE: add a handler for /api/v1/status/buildinfo endpoint, which is used by Grafana starting from v8.5.0 . See this pull request.

• FEATURE: add ability to proxy alerting API requests from Grafana to vmalert by passing -vmalert.proxyURL command-line flag to single-node VictoriaMetrics or to vmselect at cluster version of VictoriaMetrics. See this issue.

• BUGFIX: export staleness markers as null values from JSON export API. Previously they were exported as NaN values. This could break the exported JSON parsing, since NaN values aren't supported by JSON specification.

• BUGFIX: VictoriaMetrics cluster: close vmselect->vmstorage connections if they were idle for more than 30 seconds. Expose vm_tcpdialer_conns_idle metric at http://vmselect:8481/metrics with the number of idle connections to vmstorage. See this issue.

• BUGFIX: vmctl: return non-zero exit code on error. This allows handling vmctl errors in shell scripts. Previously vmctl was returning 0 exit code on error. See this issue.

• BUGFIX: vmctl: prevent from indefinite hang on Ctrl+C. See this issue.

• BUGFIX: vmagent: properly show scrape_timeout and scrape_interval options at http://vmagent:8429/config page. Previously these options weren't displayed even if they were set in -promscrape.config.

• BUGFIX: vmagent: handle non-standard http redirect status codes, which may be returned by scrape targets, in the same way as Prometheus does. See this issue.

• BUGFIX: vmalert: skip template execution during rules' validation. This should prevent from error evaluating annotation template errors when some template functions expect non-empty args. See this issue.

• BUGFIX: vmalert: fixed truncating alerts expression in table, updated table cell layout. See this issue.

• BUGFIX: MetricsQL: properly handle joins on time series filtered by values. For example, kube_pod_container_resource_requests{resource="cpu"} * on (namespace,pod) group_left() (kube_pod_status_phase{phase=~"Pending|Running"}==1). This query could result in duplicate time series on the right side error even if ==1 filter leaves only a single time series per (namespace,pod) labels. Now such query is properly executed.

• BUGFIX: MetricsQL: properly handle scalar default vector, scalar if vector and scalar ifnot vector queries. Previously such queries could return unexpected results from the vector part.

• BUGFIX: Official Grafana dashboards for VictoriaMetrics: take into account indexdb when calculating disk space usage. See this issue.

v1.76.1

Released at 2022-04-12

Update notes: this release introduces backwards-incompatible changes to communication protocol between vmselect and vmstorage nodes in cluster version of VictoriaMetrics, so read requests to vmselect will fail until the upgrade is complete. These errors will stop after all the vmselect and vmstorage nodes are updated to the new release. It is safe to downgrade to previous releases.

• FEATURE: vmalert: add support for alert_relabel_configs option at -notifier.config. This option allows configuring relabeling rules for alerts before sending them to configured notifiers. See these docs for details.

• FEATURE: vmagent: allow passing StatefulSet pod names to -promscrape.cluster.memberNum command-line flag. In this case the member number is automatically extracted from the pod name, which must end with the number in the range 0 ... promscrape.cluster.membersCount-1. For example, vmagent-0, vmagent-1, etc. See this feature request and these docs.

• BUGFIX: VictoriaMetrics cluster: properly propagate limits at -search.max* command-line flags from vminsert to vmstorage. The limits are -search.maxUniqueTimeseries, -search.maxSeries, -search.maxFederateSeries, -search.maxExportSeries, -search.maxGraphiteSeries and -search.maxTSDBStatusSeries. They weren't propagated to vmstorage because of the bug. These limits were introduced in v1.76.0. See this bug.

• BUGFIX: fix goroutine leak and possible deadlock when importing invalid data via native binary format. See this pull request.

• BUGFIX: Graphite Render API: properly calculate hitCount function. Previously it could return empty results if there were no original samples in some parts of the selected time range.

• BUGFIX: MetricsQL: allow overriding built-in function names inside WITH templates. For example, WITH (sum(a,b) = a + b + 1) sum(x,y) now expands into x + y + 1. Previously such a query would fail with cannot use reserved name error. See this bugreport.

• BUGFIX: vmui: properly display values greater than 1000 on Y axis. See this issue.

v1.76.0

Released at 2022-04-07

Update notes: this release introduces backwards-incompatible changes to communication protocol between vmselect and vmstorage nodes in cluster version of VictoriaMetrics, so read requests to vmselect will fail until the upgrade is complete. These errors will stop after all the vmselect and vmstorage nodes are updated to the new release. It is safe to downgrade to previous releases.

• FEATURE: vmctl: add ability to verify files obtained via native export. See these docs and this feature request.

• FEATURE: vmui: add pre-defined dashboards for per-job CPU usage, memory usage and disk IO usage. See this pull request for details.

• FEATURE: vmalert: improve compatibility with Prometheus Alert Generator specification. See this pull request.

• FEATURE: vmalert: add -datasource.disableKeepAlive command-line flag, which can be used for disabling HTTP keep-alive connections to datasources. This option can be useful for distributing load among multiple datasources behind TCP proxy such as HAProxy.

• FEATURE: Cluster version of VictoriaMetrics: reduce memory usage by up to 50% for vminsert and vmstorage under high ingestion rate.

• FEATURE: vmgateway: Allow to read -ratelimit.config file from URL. Also add -ratelimit.configCheckInterval command-line option. See this issue.

• FEATURE: add the following command-line flags, which can be used for fine-grained limiting of CPU and memory usage during various API calls:

  • -search.maxFederateSeries for limiting the number of time series, which can be returned from /federate.
  • -search.maxExportSeries for limiting the number of time series, which can be returned from /api/v1/export.
  • -search.maxSeries for limiting the number of time series, which can be returned from /api/v1/series.
  • -search.maxTSDBStatusSeries for limiting the number of time series, which can be scanned during the request to /api/v1/status/tsdb.
  • -search.maxGraphiteSeries for limiting the number of time series, which can be scanned during the request to Graphite Render API.

Previously the -search.maxUniqueTimeseries command-line flag was used as a global limit for all these APIs. Now the -search.maxUniqueTimeseries is used only for limiting the number of time series, which can be scanned during requests to /api/v1/query and /api/v1/query_range.

When using cluster version of VictoriaMetrics, these command-line flags (including -search.maxUniqueTimeseries) must be passed to vmselect instead of vmstorage.

• BUGFIX: vmagent and vmauth: reduce the probability of TLS handshake error from XX.XX.XX.XX: EOF errors when -remoteWrite.url points to HTTPS url at vmauth. See this issue.
• BUGFIX: return Content-Type: text/html response header when requesting / HTTP path at VictoriaMetrics components. Previously text/plain response header was returned, which could lead to broken page formatting. See this issue.
• BUGFIX: Graphite Render API: accept floating-point values for maxDataPoints query arg, since some clients send floating-point values instead of integer values for this arg.

v1.75.1

Released at 2022-03-28

• BUGFIX: update base image for VictoriaMetrics from alpine-3.15.0 to alpine-3.15.2. This fixes CVE-2022-0778. See alpine 3.15.2 release docs.

v1.75.0

Released at 2022-03-18

Update notes: release contains breaking change to vmalert's API introduced in ee396b5. It replaces the api/v1/groups API handler with api/v1/rules handler in order to become compatible with alerts generator specification. See other changes introduced to vmalert here.

• FEATURE: VictoriaMetrics cluster: add support for mTLS communications between cluster components. See these docs and this feature request.

• FEATURE: vmalert: add ability to use OAuth2 for -datasource.url, -notifier.url and -remoteRead.url. See the corresponding command-line flags containing oauth2 in their names here.

• FEATURE: vmalert: add ability to use Bearer Token for -notifier.url via -notifier.bearerToken and -notifier.bearerTokenFile command-line flags. See this issue.

• FEATURE: vmalert: add sortByLabel template function in order to be consistent with Prometheus. See these docs for more details.

• FEATURE: vmalert: improve compliance with Prometheus Alert Generator Specification.

• FEATURE: vmalert: add -rule.resendDelay command-line flag, which specifies the minumum amount of time to wait before resending an alert to Alertmanager (e.g. this is equivalent to -rules.alert.resend-delay option from Prometheus. See this feature request.

• FEATURE: vmauth: transparently treat Authorization: Token ... request headers as Authorization: Bearer ... request headers. This allows sending requests to vmauth from InfluxDB clients. See this issue. Thanks to @dcircelli for the pull request.

• FEATURE: do not log trivial network errors such as broken pipe and connection reset by peer. This error could occur when writing data to the client, which closes the connection to VictoriaMetrics due to request timeout or similar reason. See this issue.

• BUGFIX: Graphite Render API: return an additional point after until timestamp in the same way as Graphite does. Previously VictoriaMetrics didn't return this point, which could result in missing last point on the graph.

• BUGFIX: properly locate series with the given name and without the given label when using the name{label=~"foo|"} series selector. Previously such series could be skipped. See this issue. Thanks to @jduncan0000 for discovering and fixing the issue.

• BUGFIX: properly free up memory occupied by deleted cache entries for the following caches: indexdb/dataBlocks, indexdb/indexBlocks, storage/indexBlocks. This should reduce the increased memory usage starting from v1.73.0. See this and this issue.

• BUGFIX: reduce the interval for checking for free disk space from 30 seconds to 1 second. This should reduce the probability of no space left on device panics when -storage.minFreeDiskSpaceBytes is set to too low values. See this issue.

• BUGFIX: vmagent: prevent from panic at vmagent when importing a time series with big number of samples. See this issue. Thanks to @bleedfish for discovering and fixing the issue.

v1.74.0

Released at 2022-03-03

Update notes: In this release VictoriaMetrics may use some extra memory due to issues #2242 and #2007. These issues were addressed in v1.75.0, so we recommend updating straight to it.

• FEATURE: add support for conditional relabeling via if filter. The if filter can contain arbitrary series selector. For example, the following rule drops targets matching foo{bar="baz"} series selector:

- action: drop
  if: 'foo{bar="baz"}'

This rule is equivalent to less clear traditional one:

- action: drop
  source_labels: [__name__, bar]
  regex: 'foo;baz'

See relabeling docs and this issue for more details.

• FEATURE: reduce memory usage for various caches under high churn rate.

• FEATURE: vmagent: re-use Kafka client when pushing data from many tenants to Kafka. Previously a separate Kafka client was created per each tenant. This could lead to increased load on Kafka. See how to push data from vmagent to Kafka.

• FEATURE: improve performance when registering new time series. See this issue. Thanks to @ahfuzhang .

• BUGFIX: return the proper number of datapoints from moving*() functions such as movingAverage() in Graphite Render API. Previously these functions could return too big number of samples if maxDataPoints query arg is explicitly passed to /render API.

• BUGFIX: properly handle series selector containing a filter for multiple metric names plus a negative filter. For example, {__name__=~"foo|bar",job!="baz"} . Previously VictoriaMetrics could return series with foo or bar names and with job="baz". See this issue.

• BUGFIX: vmgateway: properly parse JWT tokens if they are encoded with URL-safe base64 encoding.

v1.73.1

Released at 2022-02-22

Update notes: In this release VictoriaMetrics may use some extra memory due to issues #2242 and #2007. These issues were addressed in v1.75.0, so we recommend updating straight to it.

• FEATURE: allow overriding default limits for the following in-memory caches, which usually occupy the most memory:

  • storage/tsid - the cache speeds up lookups of internal metric ids by metric_name{labels...} during data ingestion. The size for this cache can be tuned with -storage.cacheSizeStorageTSID command-line flag.
  • indexdb/dataBlocks - the cache speeds up data lookups in <-storageDataPath>/indexdb files. The size for this cache can be tuned with -storage.cacheSizeIndexDBDataBlocks command-line flag.
  • indexdb/indexBlocks - the cache speeds up index lookups in <-storageDataPath>/indexdb files. The size for this cache can be tuned with -storage.cacheSizeIndexDBIndexBlocks command-line flag. See also cache tuning docs. See this issue.

• FEATURE: add -influxDBLabel command-line flag for overriding db label name for the data imported into VictoriaMetrics via InfluxDB line protocol. Thanks to @johnatannvmd for the pull request.

• FEATURE: return X-Influxdb-Version HTTP header in responses to InfluxDB write requests. This is needed for some InfluxDB clients. See this comment and this issue.

• BUGFIX: reduce memory usage during the first three hours after the upgrade from versions older than v1.73.0. The memory usage spike was related to the need of in-memory caches' re-population after the upgrade because of the fix for this issue. Now cache size limits are reduced in order to occupy less memory during the upgrade.

• BUGFIX: fix a bug, which could significantly slow down requests to /api/v1/labels and /api/v1/label/<label_name>/values. These APIs are used by Grafana for auto-completion of label names and label values. See this issue.

• BUGFIX: vmalert: add support for $externalLabels and $externalURL template vars in the same way as Prometheus does. See this issue.

• BUGFIX: vmalert: make sure notifiers are discovered during initialization if they are configured via consul_sd_configs. Previously they could be discovered in 30 seconds (the default value for -promscrape.consulSDCheckInterval command-line flag) after the initialization. See this pull request.

• BUGFIX: update default value for -promscrape.fileSDCheckInterval, so it matches default duration used by Prometheus for checking for updates in file_sd_configs. See this issue. Thanks to @corporate-gadfly for the fix.

• BUGFIX: VictoriaMetrics cluster: do not return partial responses from vmselect if at least a single vmstorage node was reachable and returned an app-level error. Such errors are usually related to cluster mis-configuration, so they must be returned to the caller instead of being masked by partial responses. Partial responses can be returned only if some of vmstorage nodes are unreachable during the query. This may help the following issues: one, two.

v1.73.0

Released at 2022-02-14

Update notes: In this release VictoriaMetrics may use some extra memory described in issues #2242 and #2007. These issues were addressed in v1.75.0, so we recommend updating straight to it.

• FEATURE: publish VictoriaMetrics binaries for MacOS amd64 and MacOS arm64 (aka MacBook M1) at releases page. See this issue and this issue.

• FEATURE: reduce CPU and disk IO usage during indexdb rotation once per -retentionPeriod. See this issue.

• FEATURE: VictoriaMetrics cluster: add -dropSamplesOnOverload command-line flag for vminsert. If this flag is set, then vminsert drops incoming data if the destination vmstorage is temporarily unavailable or cannot keep up with the ingestion rate. The number of dropped rows can be monitored via vm_rpc_rows_dropped_on_overload_total metric at vminsert.

• FEATURE: VictoriaMetrics cluster: improve re-routing logic, so it re-routes incoming data more evenly if some of vmstorage nodes are temporarily unavailable and/or accept data at slower rate than other vmstorage nodes. Also significantly reduce possible re-routing storm when vminsert runs with -disableRerouting=false command-line flag. This should help the following issues: one, two, three, four, five.

• FEATURE: MetricsQL: cover more cases with the label filters' propagation optimization. This should improve the average performance for practical queries. The following cases are additionally covered:

  • Multi-level transform functions. For example, abs(round(foo{a="b"})) + bar{x="y"} is now optimized to abs(round(foo{a="b",x="y"})) + bar{a="b",x="y"}
  • Binary operations with on(), without(), group_left() and group_right() modifiers. For example, foo{a="b"} on (a) + bar is now optimized to foo{a="b"} on (a) + bar{a="b"}
  • Multi-level binary operations. For example, foo{a="b"} + bar{x="y"} + baz{z="q"} is now optimized to foo{a="b",x="y",z="q"} + bar{a="b",x="y",z="q"} + baz{a="b",x="y",z="q"}
  • Aggregate functions. For example, sum(foo{a="b"}) by (c) + bar{c="d"} is now optimized to sum(foo{a="b",c="d"}) by (c) + bar{c="d"}

• FEATURE MetricsQL: optimize joining with *_info labels. For example: kube_pod_created{namespace="prod"} * on (uid) group_left(node) kube_pod_info now automatically adds the needed filters on uid label to kube_pod_info before selecting series for the right side of * operation. This may save CPU, RAM and disk IO resources. See this article for details on *_info labels. See this issue.

• FEATURE: all: improve performance for arm64 builds of VictoriaMetrics components by up to 15%. See this pull request.

• FEATURE: all: expose process_cpu_cores_available metric, which shows the number of CPU cores available to the app. The number can be fractional if the corresponding cgroup limit is set to a fractional value. This metric is useful for alerting on CPU saturation. For example, the following query alerts when the app uses more than 90% of CPU during the last 5 minutes: rate(process_cpu_seconds_total[5m]) / process_cpu_cores_available > 0.9 . See this issue.

• FEATURE: vmalert: add ability to configure notifiers (e.g. alertmanager) via a file in the way similar to Prometheus. See these docs, this pull request.

• FEATURE: vmalert: add support for Consul service discovery for notifiers. See this issue.

• FEATURE: vmalert: add support for specifying Basic Auth password for notifiers via a file. See this issue.

• FEATURE: vmagent: provide the ability to fetch target responses on behalf of vmagent by clicking the response link for the needed target at /targets page. This feature may be useful for debugging responses from targets located in isolated environments.

• FEATURE: vmagent: show the total number of scrapes and the total number of scrape errors per target at /targets page. This information may be useful when debugging unreliable scrape targets.

• FEATURE: vmagent and single-node VictoriaMetrics: disallow unknown fields at -promscrape.config file. Previously unknown fields were allowed. This could lead to long-living silent config errors. The previous behaviour can be returned by passing -promscrape.config.strictParse=false command-line flag.

• FEATURE: vmagent: add __meta_kubernetes_endpointslice_label* and __meta_kubernetes_endpointslice_annotation* labels for role: endpointslice targets in kubernetes_sd_config to be consistent with other role values. See this issue.

• FEATURE: vmagent: add collapse all and expand all buttons to http://vmagent:8429/targets page. See this issue.

• FEATURE: vmagent: support Prometheus-like durations in -promscrape.config. See this comment.

• FEATURE: automatically re-read -tlsCertFile and -tlsKeyFile files, so their contents can be updated without the need to restart VictoriaMetrics apps. See this issue.

• BUGFIX: calculate absent_over_time() in the same way as Prometheus does. Previously it could return multiple time series instead of at most one time series like Prometheus does. See this issue.

• BUGFIX: return proper results from highestMax() function at Graphite render API. Previously it was incorrectly returning timeseries with min peaks instead of max peaks.

• BUGFIX: properly limit indexdb cache sizes. Previously they could exceed values set via -memory.allowedPercent and/or -memory.allowedBytes when indexdb contained many data parts. See this issue.

• BUGFIX: vmui: fix a bug, which could break time range picker when editing From or To input fields. See this issue.

• BUGFIX: vmui: fix a bug, which could break switching between graph, json and table views. See this issue.

• BUGFIX: vmui: fix possible UI freeze after querying node_uname_info time series. See this issue.

• BUGFIX: show the original location of the warning or error message when logging throttled messages. Previously the location inside lib/logger/throttler.go was shown. This could increase the complexity of debugging.

• BUGFIX: vmalert: fix links at web UI. See this issue.

• BUGFIX: vmagent: properly discover pods without exposed ports for the given service for role: endpoints and role: endpointslice in kubernetes_sd_config. See this issue.

• BUGFIX: vmagent: properly display zone contents for gce_sd_configs section at http://vmagent:8429/config page. See this issue. Thanks to @artifactori for the bugfix.

• BUGFIX: vmagent: properly handle all_tenants: true config option at openstack_sd_config. See this issue.

v1.72.0

Released at 2022-01-18

• FEATURE: MetricsQL: add support for @ modifier, which is enabled by default in Prometheus starting from Prometheus v2.33.0. See these docs and this feature request. VictoriaMetrics extends @ modifier with the following additional features:
  • It can contain arbitrary expression. For example, foo @ (end() - 1h) would return foo value at end - 1 hour timestamp on the selected time range [start ... end]. Another example: foo @ (now() - 10m) would return foo value 10 minutes ago from the current time.
  • It can be put everywhere in the query. For example, sum(foo) @ start() would calculate sum(foo) at start timestamp on the selected time range [start ... end].
• FEATURE: MetricsQL: add support for optional keep_metric_names modifier, which can be applied to all the rollup functions and transform functions. This modifier prevents from deleting metric names from function results. For example, rate({__name__=~"foo|bar"}[5m]) keep_metric_names leaves foo and bar metric names in rate() results. This feature provides an additional workaround for this issue.
• FEATURE: vmagent: add support for Kubernetes service discovery in the current namespace in the same way as Prometheus does. For example, the following config limits pod discovery to the namespace where vmagent runs:

  scrape_configs:
  - job_name: 'kubernetes-pods'
    kubernetes_sd_configs:
    - role: pod
      namespaces:
        own_namespace: true

• FEATURE: vmagent: add __meta_kubernetes_node_provider_id label for discovered Kubernetes nodes in the same way as Prometheus does.

• FEATURE: vmagent: log error message when remote storage returns 400 or 409 http errors. This should simplify detection and debugging of this case. See this issue.

• FEATURE: vmagent: expose promscrape_stale_samples_created_total metric for monitoring the total number of created stale samples when scraping Prometheus targets. See these docs for the information on when stale samples (aka staleness markers) can be created.

• FEATURE: vmrestore: store restore-in-progress file in -dst directory while vmrestore is running. This file is automatically deleted when vmrestore is successfully finished. This helps detecting incompletely restored data on VictoriaMetrics start. See this issue.

• FEATURE: vmctl: print the last sample timestamp when the data migration is interrupted either by user or by error. This helps continuing the data migration from the interruption moment. See this issue.

• FEATURE: vmalert: expose vmalert_remotewrite_total metric at /metrics page. This makes possible calculating SLOs for error rate during writing recording rules and alert state to -remoteWrite.url with the query vmalert_remotewrite_errors_total / vmalert_remotewrite_total. See this issue. Thanks to @afoninsky .

• FEATURE: vmalert: add stripPort template function in the same way as Prometheus does.

• FEATURE: vmalert: add parseDuration template function in the same way as Prometheus does.

• FEATURE: MetricsQL: add stale_samples_over_time(m[d]) function for calculating the number of staleness marks for time series m over the duration d. This function may be useful for detecting flapping metrics at scrape targets, which periodically disappear and then appear again.

• FEATURE: vmgateway: add support for extra_filters option. See this issue.

• FEATURE: vmui: improve UX according to this feature request. Thanks to @Loori-R .

• FEATURE: vmui: limit the number of requests sent to VictoriaMetrics during zooming / scrolling. See this issue.

• BUGFIX: vmagent: make sure that vmagent replicas scrape the same targets at different time offsets when replication is enabled in vmagent clustering mode. This guarantees that the deduplication consistently leaves samples from the same vmagent replica.

• BUGFIX: return the proper response stub from /api/v1/query_exemplars handler, which is needed for Grafana v8+. See this issue.

• BUGFIX: vmctl: fix a few edge cases and improve migration speed for OpenTSDB importer. See this pull request.

• BUGFIX: fix possible data race when searching for time series matching {key=~"value|"} filter over time range covering multipe days. See this pull request. Thanks to @waldoweng for the provided fix.

• BUGFIX: vmagent: do not send staleness markers on graceful shutdown. This follows Prometheus behavior. See this comment.

• BUGFIX: vmagent: properly set __address__ label in dockerswarm_sd_config. See this issue. Thanks to @ashtuchkin for the fix.

• BUGFIX: vmui: fix incorrect calculations for graph limits on y axis. This could result in incorrect graph rendering in some cases. See this issue.

• BUGFIX: vmui: fix handling for multi-line queries. See this issue.

v1.71.0

Released at 2021-12-20

Update notes: deduplication logic was slightly changed on the release, which may cause extra background merges for already existing data parts for installations with -dedup.minScrapeInterval flag value greater than 0. This process is intentionally limited by one CPU core, but still can result into increase of CPU usage until merges are finished.

We recommend updating in "off-peak" time when load on the VictoriaMetrics is on its minimum.

• FEATURE: VictoriaMetrics enterprise: add multi-level downsampling support. See these docs and this feature request.

• FEATURE: vmui: add ability to analyze the correlation between two queries on a single graph. Just click +Query button, enter the second query in the newly appeared input field and press Ctrl+Enter. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed. See this pull request.

• FEATURE: vmui: add ability to override the interval between returned datapoints. By default it is automatically calculated depending on the selected time range and horizontal resolution of the graph. Now it is possible to override it with custom values. This may be useful during data exploration and debugging.

• FEATURE: accept optional extra_filters[]=series_selector query args at Prometheus query APIs additionally to extra_label query args. This allows enforcing additional filters for all the Prometheus query APIs by using vmgateway or vmauth. See this feature request.

• FEATURE: vmauth: allow specifying http and https urls in -auth.config command-line flag. See this pull request. Thanks for @TFM93 .

• FEATURE: vmagent: allow specifying http and https urls in the following command-line flags: -promscrape.config, -remoteWrite.relabelConfig and -remoteWrite.urlRelabelConfig.

• FEATURE: vminsert: allow specifying http and https urls in -relabelConfig command-line flag.

• FEATURE: vminsert: add -maxLabelValueLen command-line flag for the ability to configure the maximum length of label value. See this feature request.

• FEATURE: preserve the order of time series passed to limit_offset function. This allows implementing series paging via limit_offset(limit, offset, sort_by_label(...)). See this and this issues.

• FEATURE: automaticall convert (value1|...|valueN) into {value1,...,valueN} inside __graphite__ pseudo-label. This allows using Grafana multi-value template variables inside __graphite__ pseudo-label. For example, {__graphite__=~"foo.($bar)"} is expanded to {__graphite__=~"foo.{x,y}"} if both x and y are selected for $bar template variable. See these docs for details.

• FEATURE: add timestamp_with_name function. It works the same as timestamp, but leaves the original time series names, so it can be used in queries, which match multiple time series names: timestamp_with_name({foo="bar"}[1h]). See this comment for more context.

• FEATURE: add changes_prometheus, increase_prometheus and delta_prometheus functions, which don't take into account the previous sample before the given lookbehind window specified in square brackets. These functions may be used when the Prometheus behaviour for changes(), increase() and delta() functions is needed to be preserved. VictoriaMetrics uses slightly different behaviour for changes(), increase() and delta() functions by default - see this article for details. See this issue.

• BUGFIX: fix unaligned 64-bit atomic operation panic on 32-bit architectures, which has been introduced in v1.70.0. See this issue.

• BUGFIX: vmalert: restore the ability to use $labels.alertname in labels templating. See this issue.

• BUGFIX: vmui: add missing query caption to the input field for the query. See this issue.

• BUGFIX: vmui: fix navigation over query history with Ctrl+up/down and fix zoom relatively to the cursor position. See this pull request.

• BUGFIX: deduplicate samples more thoroughly if deduplication is enabled. Previously some duplicate samples may be left on disk for time series with high churn rate. This may result in bigger storage space requirements.

• BUGFIX: vmagent: follow up to 5 redirects when follow_redirects: true is set for a particular scrape config. Previously only a single redirect was performed in this case. It is expected these redirects are performed to the original hostname. See this issue.

• BUGFIX: de-duplicate data exported via /api/v1/export/csv by default if deduplication is enabled. The de-duplication can be disabled by passing reduce_mem_usage=1 query arg to /api/v1/export/csv. See this issue.

• BUGFIX: vmalert: properly store historical data to old Prometheus versions. See this issue.

v1.70.0

Released at 2021-12-02

• FEATURE: vmalert: add ability to pass arbitrary query args to -datasource.url on a per-group basis via params option. See this pull request.

• FEATURE: add now() function to MetricsQL. This function returns the current timestamp in seconds. See these docs.

• FEATURE: vmauth: allow using optional name field in configs. This field is then used as username label value for vmauth_user_requests_total metric. See this feature request.

• FEATURE: vmagent: export vm_persistentqueue_read_duration_seconds_total and vm_persistentqueue_write_duration_seconds_total metrics, which can be used for detecting persistent queue saturation with rate(vm_persistentqueue_write_duration_seconds_total) > 0.9 alerting rule.

• FEATURE: export vm_filestream_read_duration_seconds_total and vm_filestream_write_duration_seconds_total metrics, which can be used for detecting persistent disk saturation with rate(vm_filestream_read_duration_seconds_total) > 0.9 alerting rule.

• FEATURE: export vm_cache_size_max_bytes metrics, which show capacity for various caches. These metrics can be used for determining caches with reach its capacity with vm_cache_size_bytes / vm_cache_size_max_bytes > 0.9 query.

• FEATURE: vmbackup, vmrestore: add -s3ForcePathStyle command-line flag, which can be used for making backups to Aliyun OSS. See this pull request.

• FEATURE: vmctl: improve data migration from OpenTSDB. See this pull request. Thanks to @johnseekins .

• FEATURE: suppress connection reset by peer errors when remote client resets TCP connection to VictoriaMetrics / vmagent while ingesting the data via InfluxDB line protocol, Graphite protocol or OpenTSDB protocol. This error is expected, so there is no need in logging it.

• FEATURE: vmui: store the display type in URL, so it isn't lost when copy-pasting the URL. See this feature request.

• FEATURE: vmalert: make -notifier.url command-line flag optional. This flag can be omitted if vmalert is used solely for recording rules and doesn't evaluate alerting rules. See this pull request.

• FEATURE: vmbackup, vmrestore: export internal metrics at http://vmbackup:8420/metrics and http://vmrestore:8421/metrics for better visibility of the backup/restore process.

• FEATURE: allow trailing whitespace after the timestamp when parsing Graphite plaintext lines. See this issue.

• FEATURE: expose /-/healthy and /-/ready endpoints as Prometheus does. This is needed for improving integration with third-party solutions, which rely on these endpoints. See this issue.

• BUGFIX: vmagent: prevent from scraping duplicate targets if -promscrape.dropOriginalLabels command-line flag is set. See this issue. Thanks to @guidao for the fix.

• BUGFIX: vmstorage enterprise: added missing vm_tenant_used_tenant_bytes metric, which shows the approximate per-tenant disk usage. See these docs and this issue.

• BUGFIX: vmauth: properly take into account the value passed to -maxIdleConnsPerBackend command-line flag. See this issue.

• BUGFIX: vmagent: fix reading data from Kafka.

• BUGFIX: vmalert: fix replay mode in enterprise version.

• BUGFIX: consistently return zero from deriv() function applied to a constant time series. Previously it could return small non-zero values in this case.

• BUGFIX: vmrestore: properly resume downloading for partially downloaded big files. Previously such files were re-downloaded from the beginning after the interrupt. Now only the remaining parts of the file are downloaded. This allows saving network bandwidth. See this issue.

• BUGFIX: vmui: do not store the last query across vmui page reloads. See this issue.

• BUGFIX: vmui: fix Cannot read properties of undefined error at table view. See this issue.

v1.69.0

Released at 2021-11-08

• FEATURE: vmalert: allow groups with empty rules list like Prometheus does. See this pull request.

• FEATURE: vmalert: allow groups with default tenant in -clusterMode. Default tenant values can be specified via -defaultTenant.prometheus and -defaultTenant.graphite. See these docs.

• FEATURE: vmagent: add collapse and expand buttons per each group of targets with the same job_name at http://vmagent:8429/targets page.

• FEATURE: automatically detect timestamp precision (ns, us, ms or s) for the data ingested into VictoriaMetrics via InfluxDB line protocol.

• FEATURE: vmagent: add ability to protect /config page with auth key via -configAuthKey command-line flag. This page may contain sensitive config information, so it may be good to restrict access to this page. See this issue.

• FEATURE: vmagent: hide passwords and auth tokens at /config page like Prometheus does. See this issue.

• FEATURE: vmagent: add -promscrape.maxResponseHeadersSize command-line flag for tuning the maximum HTTP response headers size for Prometheus scrape targets.

• FEATURE: vmagent: send data to multiple configured remote storage systems in parallel (e.g. when multiple -remoteWrite.url flag values are specified). This should improve data ingestion speed.

• FEATURE: vmagent: add -remoteWrite.maxRowsPerBlock command-line flag for tuning the number of samples to send to remote storage per each block. Bigger values may improve data ingestion performance at the cost of higher memory usage.

• FEATURE: vmagent: distribute Kafka messages among all the partitions when writing data to Kafka.

• FEATURE: add label_graphite_group function for extracting the given groups from Graphite metric names.

• FEATURE: add duration_over_time function for calculating the actual lifetime of the time series with possible gaps. See this feature request.

• FEATURE: add limit_offset function, which can be used for implementing simple paging over big number of time series. See this feature request.

• BUGFIX: vmagent: reduce the increased memory usage when scraping targets with big number of metrics which periodically change. The memory usage has been increased in v1.68.0 after vmagent started generating staleness markers in stream parse mode. See this issue.

• BUGFIX: vmagent: properly display proxy_url config option at http://vmagent:8429/config page. See this issue.

• BUGFIX: fix tests for Apple M1. See this issue.

v1.68.0

Released at 2021-10-22

• FEATURE: vmagent: expose -promscrape.config contents at /config page as Prometheus does. See this feature request.

• FEATURE: vmagent: add show original labels button per each scrape target displayed at http://vmagent:8429/targets page. This should improve debuggability for service discovery and relabeling issues similar to this one. See this feature request.

• FEATURE: vmagent: shard targets among cluster nodes after the relabeling is applied. This should guarantee that targets with the same set of labels go to the same vmagent node in the cluster. See this issue.

• FEATURE: vmagent: atomatically switch to stream parsing mode if the response from the given target exceeds the command-line flag value -promscrape.minResponseSizeForStreamParse. This should reduce memory usage when vmagent scrapes targets with non-uniform response sizes (this is the case in Kubernetes monitoring).

• FEATURE: vmagent: send Prometheus-like staleness marks in stream parsing mode. Previously staleness marks wern't sent in stream parsing mode. See these docs for details.

• FEATURE: vmagent: properly calculate scrape_series_added metric for targets in stream parsing mode. Previously it was set to 0 in stream parsing mode. See more details about this metric.

• FEATURE: vmagent: expose promscrape_series_limit_max_series and promscrape_series_limit_current_series metrics at http://vmagent:8429/metrics for scrape targets with the enabled series limiter.

• FEATURE: vmagent: return error if sample_limit or series_limit options are set when stream parsing mode is enabled, since these limits cannot be applied in stream parsing mode.

• FEATURE: vmalert: add -remoteRead.disablePathAppend command-line flag, which allows specifying the full -remoteRead.url. If -remoteRead.disablePathAppend is set, then vmalert doesn't add /api/v1/query suffix to -remoteRead.url.

• FEATURE: add trigonometric functions, which are going to be added in Prometheus 2.31: acosh, asinh, atan, atanh, cosh, deg, rad, sinh, tan, tanh. Also add atan2 binary operator. See this pull request.

• FEATURE: consistently return the same set of time series from limitk function. This improves the usability of periodically refreshed graphs.

• FEATURE: vmui: varios UX improvements. See this pull request and these docs.

• FEATURE: vmauth: add ability to specify HTTP headers, which will be sent in requests to backends. See this feature request.

• FEATURE: add /flags page to all the VictoriaMetrics components. This page contains command-line flags passed to the component.

• FEATURE: allow using tab separators additionally to whitespace separators when ingesting data in Graphite plaintext protocol. Such separators are supported by Carbon-c-relay.

• BUGFIX: vmstorage: fix unaligned 64-bit atomic operation panic on 32-bit architectures (arm and 386). The panic has been introduced in v1.67.0.

• BUGFIX: vmalert, vmauth: prevent from frequent closing of TCP connections established to backends under high load. This should reduce the number of TCP sockets in TIME_WAIT state at vmalert and vmauth under high load. See this pull request.

• BUGFIX: vmalert: correctly calculate alert ID including extra labels. Previously, ID for alert entity was generated without alertname or groupname. This led to collision, when multiple alerting rules within the same group producing same labelsets. E.g. expr: sum(metric1) by (job) > 0 and expr: sum(metric2) by (job) > 0 could result into same labelset job: "job". The bugfix adds all extra labels right after receiving response from the datasource. See this pull request.

• BUGFIX: vmalert: fix links in Web UI. See this pull request.

• BUGFIX: vmagent: set honor_timestamps: true by default in scrape configs if this options isn't set explicitly. This aligns the behaviour with Prometheus.

• BUGFIX: vmagent: group scrape targets by the original job names at http://vmagent:8429/targets page like Prometheus does. Previously they were grouped by the job name after relabeling, which may result in unexpected empty target groups. See this issue.

• BUGFIX: vmctl: fix importing boolean fields from InfluxDB line protocol. See this issue.

v1.67.0

Released at 2021-10-08

• FEATURE: add ability to accept metrics from DataDog agent and DogStatsD. See these docs. This option simplifies the migration path from DataDog to VictoriaMetrics. See also this issue.

• FEATURE: vmagent enterprise: add support for data reading and writing from/to Apache Kafka. See these docs.

• FEATURE: vmui: switch to μPlot and add ability to naturally scroll and zoom graphs. See these docs. Thanks to @Loori-R.

• FEATURE: vmstorage: stop accepting new data if -storageDataPath directory contains less than -storage.minFreeDiskSpaceBytes of free space. This should prevent from out of disk space crashes. See this feature request.

• FEATURE: calculate quantiles in the same way as Prometheus does in such functions as quantile_over_time and quantile. Previously results from VictoriaMetrics could be slightly different than results from Prometheus. See this and this issues.

• FEATURE: add rollup_scrape_interval(m[d]) function to MetricsQL, which returns min, max and avg values for the interval between samples for m on the given lookbehind window d.

• FEATURE: add topk_last(k, q) and bottomk_last(k, q) functions to MetricsQL, which return up to k time series from q with the maximum / minimum last value on the graph.

• BUGFIX: align behavior of the queries a or on (labels) b, a and on (labels) b and a unless on (labels) b where b has multiple time series with the given labels to Prometheus behavior. See this pull request.

• BUGFIX: vmagent: fix openstack_sd_config service discovery when both domain_name and project_id config options are set. See this issue.

• BUGFIX: return proper values (zeroes) from stddev_over_time and stdvar_over_time functions when the lookbehind window in square brackets contains only a single sample. Previously the sample value was incorrectly returned in this case.

• BUGFIX: vminsert: fix uneven distribution of time series among storage nodes in multi-level cluster setup. See this issue.

v1.66.2

Released at 2021-09-23

• FEATURE: vmagent: add vm_promscrape_max_scrape_size_exceeded_errors_total metric for counting of the failed scrapes due to the exceeded response size (the response size limit can be configured via -promscrape.maxScrapeSize command-line flag). See this issue.

• BUGFIX: vmalert: properly reload rule groups if only the interval config option is changed. See this issue.

• BUGFIX: properly handle {__name__=~"prefix(suffix1|suffix2)",other_label="..."} queries. They may return unexpected empty responses since v1.66.0. See this issue.

v1.66.1

Released at 2021-09-22

• FEATURE: add -cluster and/or -enterprise suffixes to short_version label at vm_app_version metric exposed at /metrics page of every VictoriaMetrics component. See this issue.

• BUGFIX: vmselect: fix accessing Graphite APIs. The access has been broken in v1.66.0, because /graphite/* path prefix accidentally clashed with /graph* path prefix used for VictoriaMetrics UI (aka vmui).

• BUGFIX: fix parsing regex: <bool_or_number> in relabeling rules (for example, regex: true or regex: 123). The bug has been introduced in v1.66.0.

v1.66.0

Released at 2021-09-20

• FEATURE: vmalert: add web UI with the list of alerting groups, alerts and alert statuses. See this pull request.

• FEATURE: vmalert: add -rule.maxResolveDuration command-line flag, which could be used for limiting the auto-resolve duration for the alerting rule. By default it is limited to 3x evaluation interval. This could be too high for big evaluation intervals. See this issue.

• FEATURE: vmalert: add support for Bearer token authorization for -datasource.url, -remoteRead.url and -remoteWrite.url. See this issue.

• FEATURE: vmagent: send stale markers for disappeared metrics like Prometheus does. Previously stale markers were sent only when the scrape target disappears or when it becomes temporarily unavailable. See these docs for details.

• FEATURE: vmagent: add ability to set series_limit option for a particular scrape target via __series_limit__ label. This allows setting the limit on the number of time series on a per-target basis. See these docs for details.

• FEATURE: vmagent: add ability to set stream_parse option for a particular scrape target via __stream_parse__ label. This allows managing the stream parsing mode on a per-target basis. See these docs for details.

• FEATURE: vmagent: add ability to set scrape_interval and scrape_timeout options for a particular target via __scrape_interval__ and __scrape_timeout__ labels in the same way as Prometheus 2.30 does. See this pull request.

• FEATURE: vmagent: generate scrape_timeout_seconds metric per each scrape target, so the target saturation could be calculated with scrape_duration_seconds / scrape_timeout_seconds. See the corresponding pull request from Prometheus 2.30.

• FEATURE: vmagent: reduce CPU usage when calculating the number of newly added series per scrape (this number is sent to remote storage in scrape_series_added metric).

• FEATURE: vmagent: reduce CPU usage when applying series_limit to scrape targets with constant set of metrics. See more information about series_limit here.

• FEATURE: vminsert: disable rerouting by default when a few of vmstorage nodes start accepting data at lower speed than the rest of vmstorage nodes. This should improve VictoriaMetrics cluster stability during rolling restarts and during spikes in time series churn rate. The rerouting can be enabled by passing -disableRerouting=false command-line flag to vminsert.

• FEATURE: vmauth: do not put invalid auth tokens into log by default due to security reasons. The logging can be returned back by passing -logInvalidAuthTokens command-line flag to vmauth. Requests with invalid auth tokens are counted at vmagent_http_request_errors_total{reason="invalid_auth_token"} metric exposed by vmauth at /metrics page.

• FEATURE: add new relabeling actions: keep_metrics and drop_metrics. This simplifies metrics filtering by metric names. See these docs for more details.

• FEATURE: allow splitting long regex in relabeling filters into an array of shorter regexps, which can be put into multiple lines for better readability and maintainability. See these docs for more details.

• FEATURE: optimize performance for queries with regexp filters on metric name like {__name__=~"metric1|...|metricN"}. See this pull request from @faceair.

• FEATURE: vmui: use Prometheus-compatible query args, so vmui could be accessed from graph editor in Grafana. See this pull request. Thanks to @Loori-R.

• FEATURE: vmselect: automatically add missing port to -storageNode hostnames. For example, -storageNode=vmstorage1,vmstorage2 is automatically translated to -storageNode=vmstorage1:8401,vmstorage2:8401. This simplifies manual setup of VictoriaMetrics cluster.

• FEATURE: vminsert: automatically add missing port to -storageNode hostnames. For example, -storageNode=vmstorage1,vmstorage2 is automatically translated to -storageNode=vmstorage1:8400,vmstorage2:8400. This simplifies manual setup of VictoriaMetrics cluster.

• FEATURE: add mad(q) function to MetricsQL. It calculates Median absolute deviation for groups of points with identical timestamps across multiple time series.

• FEATURE: add outliers_mad(tolerance, q) function to MetricsQL. It returns time series with peaks outside the Median absolute deviation multiplied by tolerance.

• FEATURE: add histogram_quantiles("phiLabel", phi1, ..., phiN, buckets) function to MetricsQL. It calculates the given phi*-quantiles over the given buckets and returns time series per each quantile with the corresponding {phiLabel="phi*"} label.

• FEATURE: add quantiles_over_time("phiLabel", phi1, ..., phiN, series_selector[d]) function to MetricsQL. It calculates the given phi*-quantiles over raw samples selected by series_selector on the given lookbehind window d. It returns time series per each quantile with the corresponding {phiLabel="phi*"} label.

• FEATURE: enterprise: do not ask for -eula flag if -version flag is passed to enteprise app. See this issue.

• BUGFIX: properly handle queries with multiple filters matching empty labels such as metric{label1=~"foo|",label2="bar|"}. This filter must match the following series: metric, metric{label1="foo"}, metric{label2="bar"} and metric{label1="foo",label2="bar"}. Previously it was matching only metric{label1="foo",label2="bar"}. See this issue.

• BUGFIX: vmselect: reset connection timeouts after each request to vmstorage. This should prevent from cannot read data in 0.000 seconds: unexpected EOF warning in logs. See this issue. Thanks to @mxlxm .

• BUGFIX: keep metric name for time series returned from rollup_candlestick function, since the returned series don't change the meaning of the original series. See this issue.

• BUGFIX: use Prometheus-compatible label value formatting for count_values function. Previously big values could be improperly formatted, which could break query results, which rely on label value such as ... on(label) count_values("label", ...).

• BUGFIX: vmagent: properly use https scheme for wildcard TLS certificates for role: ingress targets in Kubernetes service discovery. See this issue.

• BUGFIX: vmagent: support host networking mode for docker_sd_config. See this issue.

• BUGFIX: fix non-repeatable results from quantile_over_time() function when the number of input samples exceeds 1000. See this issue.

• BUGFIX: vmagent: fix EC2 zone discovery when filters are specified in ec2_sc_config. See this issue.

v1.65.0

Released at 2021-09-01

• FEATURE: vmagent: add ability to read scrape configs from multiple files specified in scrape_config_files section. See this issue.

• FEATURE: vmagent: reduce memory usage and CPU usage when Prometheus staleness tracking is enabled for metrics exported from the deleted or disappeared scrape targets.

• FEATURE: vmagent: add the ability to limit the number of unique time series scraped per each target. This can be done either globally via -promscrape.seriesLimitPerTarget command-line option or on per-target basis via series_limit option at scrape_config section. See the updated docs on cardinality limiter and this issue.

• FEATURE: vmagent: discover role: ingress and role: endpointslice in kubernetes_sd_config via v1 API instead of v1beta1 API if Kubernetes supports it. This fixes service discovery in Kubernetes v1.22 and newer versions. See these docs.

• FEATURE: take into account failed queries in vm_request_duration_seconds summary at /metrics. Previously only successful queries were taken into account. This could result in skewed summary. See this pull request.

• FEATURE: vmalert: add an official dashboard for vmalert. See these docs.

• FEATURE: vmalert: add ability to set additional labels per group via labels config section. See this issue.

• FEATURE: vmalert: add -disableAlertgroupLabel command-line flag for disabling the label with alert group name. This may be needed for proper deduplication in Alertmanager. See this issue.

• FEATURE: update Go builder from v1.16.7 to v1.17.0. This improves data ingestion and query performance by up to 5% according to benchmarks. See the release post for Go1.17.

• FEATURE: vmagent: expose promscrape_discovery_http_errors_total metric, which can be used for monitoring the number of failed discovery attempts per each http_sd config.

• FEATURE: do not reset response cache when a sample with old timestamp is ingested into VictoriaMetrics if -search.disableAutoCacheReset command-line option is set. See this feature request.

• FEATURE: add quantiles("phiLabel", phi1, ..., phiN, q) aggregate function to MetricsQL, which calculates the given phi* quantiles over time series returned by q. See this feature request.

• BUGFIX: rename sign function to sgn in order to be consistent with PromQL. See this pull request from Prometheus.

• BUGFIX: vmagent: add role: endpointslice in kubernetes_sd_config in order to be consistent with Prometheus. Previously this role was supported with incorrect name: role: endpointslices. Now both endpointslice and endpointslices are supported. See the corresponding code in Prometheus.

• BUGFIX: improve the detection of the needed free space for background merge operation. This should prevent from possible out of disk space crashes during big merges. See this issue.

• BUGFIX: vmauth: remove trailing slash from the full url before requesting it from the backend. See this pull request.

• BUGFIX: vmbackupmanager: fix timeout error when snapshot takes longer than 10 seconds. See this issue.

• BUGFIX: properly parse OpenTSDB put messages with multiple spaces between message elements. See this issue. Thanks to @envzhu for the fix.

v1.64.1

Released at 2021-08-19

• FEATURE: add bitmap_and(q, mask), bitmap_or(q, mask) and bitmak_xor(q, mask) functions to MetricsQL. These functions allow performing bitwise operations over data points in time series. See this issue.

• FEATURE: vmalert: add -remoteWrite.disablePathAppend command-line flag, which can be used when custom -remoteWrite.url must be specified. For example, ./vmalert -disablePathAppend -remoteWrite.url='http://foo.bar/a/b/c?d=e' would write data to http://foo.bar/a/b/c?d=e instead of http://foo.bar/a/b/c?d=e/api/v1/write. See this pull request.

• FEATURE: vmagent: add -promscrape.noStaleMarkers command-line flag for disabling sending Prometheus stale markers for metrics from disappeared scrape targets. This option may be used for reducing memory usage when scraping big number of metrics with big number of labels and when stale markers aren't needed.

• FEATURE: vmselect: add -search.noStaleMarkers command-line flag for disabling stale markers handling in queries. This may save some CPU time when the queried data doesn't contain stale markers.

• BUGFIX: vmagent: stop scrapers for deleted targets before starting scrapers for added targets. This should prevent from possible time series overlap when old targets are substituted by new targets (for example, during new deployment in Kubernetes). The overlap could lead to incorrect query results. See this issue.

• BUGFIX: vmagent: send Prometheus stale markers for the previously scraped metrics on failed scrapes like Prometheus does. See this article.

• BUGFIX: upgrade base Docker image from Alpine 3.14.0 to Alpine 3.14.1 . This fixes potential security issues - see Alpine 3.14.1 release notes.

• BUGFIX: disable overriding the lookbehind window [d] at last_over_time(m[d]) if d is smaller than the interval between samples, since users don't expect implicit overriding of explicitly set [d] in last_over_time(m[d]).

v1.64.0

Released at 2021-08-15

• FEATURE: add support for Prometheus staleness markers. See this issue.

• FEATURE: vmagent: automatically generate Prometheus staleness markers for the scraped metrics when scrape targets disappear in the same way as Prometheus does. See this issue.

• FEATURE: add present_over_time(m[d]) function, which returns 1 if m has a least a single sample over the previous duration d. This function has been added also to Prometheus 2.29.

• FEATURE: vmagent: support multitenant writes according to these docs. This allows using a single vmagent instance in front of VictoriaMetrics cluster for all the tenants. Thanks to @omarghader for the pull request. See this issue.

• FEATURE: vmagent: add __meta_ec2_availability_zone_id label to discovered Amazon EC2 targets. This label is available in Prometheus starting from v2.29.

• FAETURE: vmagent: add __meta_gce_interface_ipv4_<name> labels to discovered GCE targets. These labels are available in Prometheus starting from v2.29.

• FEATURE: add -search.maxSamplesPerSeries command-line flag for limiting the number of raw samples a single query can process per each time series. This option can protect from out of memory errors when a query processes tens of millions of raw samples per series. See this issue.

• FEATURE: add -search.maxSamplesPerQuery command-line flag for limiting the number of raw samples a single query can process across all the time series. This option can protect from heavy queries, which select too big number of raw samples. Thanks to @jiangxinlingdu for the initial pull request.

• FEATURE: improve performance for queries that process big number of time series and/or samples on systems with big number of CPU cores.

• FEATURE: vmalert: expose vmalert_alerting_rules_last_evaluation_samples and vmalert_recording_rules_last_evaluation_samples metrics. See this issue.

• FEATURE: vminsert: expose vm_rpc_send_duration_seconds_total counter, which can be used for determining high saturation of every vminsert -> vmstorage link with an alerting query rate(vm_rpc_send_duration_seconds_total) > 0.9s. This query triggers when the link is saturated by more than 90%. This usually means that more vminsert or vmstorage nodes must be added to the cluster in order to increase the total number of vminsert -> vmstorage links.

• FEATURE: vmagent: expose vmagent_remotewrite_send_duration_seconds_total counter, which can be used for determining high saturation of every connection to remote storage with an alerting query rate(vmagent_remotewrite_send_duration_seconds_total) > 0.9s. This query triggers when a connection is saturated by more than 90%. This usually means that -remoteWrite.queues command-line flag must be increased in order to increase the number of connections per each remote storage.

• FEATURE: vmui: automatically fill Server URL field. See this issue.

• BUGFIX: fix corner cases for queries on time ranges exceeding 40 days. Previously some series can be missing in query results. See this issue.

• BUGFIX: vmselect: return dummy response at /rules page in the same way as for /api/v1/rules page. The /rules page is requested by Grafana 8. See this issue for details.

• BUGFIX: vmbackup: automatically set default us-east-1 S3 region if it is missing. This should simplify using S3-compatible services such as MinIO for backups. See this issue.

• BUGFIX: vmselect: prevent from possible deadlock when multiple target query args are passed to Graphite Render API.

• BUGFIX: return series with a op b labels and N values for (a op b) default N if (a op b) returns series with all NaN values. Previously such series were removed.

• BUGFIX: vmui: fix layout when the query selects more than 27 time series. See this issue.

• BUGFIX: vmagent: restore highlighting in red for DOWN targets at /targets page. See this issue.

v1.63.0

Released at 2021-07-15

• FEATURE: reduce memory usage by up to 30% on production workloads.

• FEATURE: vmselect: embed vmui into a single-node VictoriaMetrics and into vmselect component of cluster version. See this feature request. The web interface is available at the following paths:

  • /vmui/ for a single-node VictoriaMetrics
  • /select/<accountID>/vmui/ for vmselect at cluster version of VictoriaMetrics

• FEATURE: support durations anywhere in MetricsQL queries. For example, sum_over_time(m[1h]) / 1h is a valid query, which is equivalent to sum_over_time(m[1h]) / 3600.

• FEATURE: support durations without suffixes in MetricsQL queries. For example, rate(m[3600]) is a valid query, which is equivalent to rate(m[1h]).

• FEATURE: export vmselect_request_duration_seconds and vminsert_request_duration_seconds VictoriaMetrics histograms at /metrics page. These histograms can be used for determining latency distribution and SLI/SLO for the served requests. For example, the following query would return the percent of queries that took less than 500ms during the last hour: histogram_share(500ms, sum(rate(vmselect_request_duration_seconds_bucket[1h])) by (vmrange)).

• FEATURE: vmagent: dynamically reload client TLS certificates from disk on every mTLS connection. This should allow using vmagent with Istio service mesh. See this feature request.

• FEATURE: log http request path plus all the query args on errors during request processing. Previously only http request path was logged without query args, so it could be hard debugging such errors.

• FEATURE: add is_set label to flag metrics. This allows determining explicitly set command-line flags with the query flag{is_set="true"}.

• FEATURE: add ability to remove caches stored inside <-storageDataPath>/cache on startup if reset_cache_on_startup file is present there. See this feature request.

• BUGFIX: vmagent: remove { %space %} typo in /targets output. The typo has been introduced in v1.62.0. See this issue.

• BUGFIX: vmagent: fix CSS styles on /targets page. See this issue.

• BUGFIX: vmalert: accept Prometheus-like durations in interval config option inside group section. See this issue.

• BUGFIX: properly update vm_merge_need_free_disk_space metric at /metrics page when there is no enough free disk space for performing optimal merges. See this issue.

v1.62.0

Released at 2021-06-25

• FEATURE: vmagent: add service discovery for Docker (aka docker_sd_config). See this pull request.

• FEATURE: vmagent: add service discovery for DigitalOcean (aka digitalocean_sd_config). See this feature request.

• FEATURE: vmagent: change the default value for -remoteWrite.queues from 4 to 2 * numCPUs. This should reduce scrape duration for highly loaded vmagent, which scrapes tens of thousands of targets. See this pull request.

• FEATURE: vmagent: show the number of samples the target returns during the last scrape on /targets and /api/v1/targets pages. This should simplify debugging targets, which may return too big or too low number of samples. See this feature request.

• FEATURE: vmagent: show jobs with zero discovered targets on /targets page. This should help debugging improperly configured scrape configs.

• FEATURE: vmagent: support for http-based service discovery (aka http_sd_config), which has been added since Prometheus 2.28. See this feature request.

• FEATURE: vmagent: support namespace in Consul serive discovery in the same way as Prometheus 2.28 does. See this issue for details.

• FEATURE: vmagent: support generic auth configs in consul_sd_configs in the same way as Prometheus 2.28 does. See this issue for details.

• FEATURE: vmctl: limit the number of samples per each imported JSON line. This should limit the memory usage at VictoriaMetrics side when importing time series with big number of samples.

• FEATURE: vmselect: log slow queries across all the /api/v1/* handlers (aka Prometheus query API) if their execution duration exceeds -search.logSlowQueryDuration. This should simplify debugging slow requests to such handlers as /api/v1/labels or /api/v1/series additionally to /api/v1/query and /api/v1/query_range, which were logged in the previous releases.

• FEATURE: vminsert: sort the -storageNode list in order to guarantee the identical series -> vmstorage mapping across all the vminsert nodes. This should reduce resource usage (RAM, CPU and disk IO) at vmstorage nodes if vmstorage addresses are passed in random order to vminsert nodes.

• FEATURE: vmstorage: reduce memory usage on a system with many CPU cores under high ingestion rate.

• BUGFIX: prevent from adding new samples to deleted time series after the rotation of the inverted index (the rotation is performed once per -retentionPeriod). See this comment for details.

• BUGFIX: vmstorage: reduce high disk write IO usage on systems with big number of CPU cores. The issue has been introduced in the release v1.59.0. See this commit and this comment for details.

• BUGFIX: vmstorage: prevent from incorrect stats collection when multiple concurrent queries execute the same tag filter. This may help reducing CPU usage under certain workloads. See this issue.

• BUGFIX: vmselect: return the last timestamp for the max / min value from tmax_over_time(m[d]) and tmin_over_time(m[d]) MetricsQL functions as most users expect. See also this issue.

• BUGFIX: vmselect: return the expected value for increase_pure() MetricsQL function after a gap in a time series. Previously incorrect too big value could be returned after the gap from increase_pure().

v1.61.1

Released at 2021-06-11

• BUGFIX: vmalert: fix recording rules, which were broken in v1.61.0. See this issue.
• BUGFIX: reset the on-disk cache for mapping from the full metric name to an internal metric id (e.g. metric_name{labels} -> internal_metric_id) after deleting metrics via delete API. This should prevent from possible inconsistent state after unclean shutdown. This this issue.

v1.61.0

Released at 2021-06-09

• FEATURE: vmalert: add support for backfilling (aka replay) of recording and alerting rules. See these docs and this feature request.

• FEATURE: vmalert: add a command-line flag -rule.configCheckInterval for automatic re-reading of -rule files without the need to send SIGHUP signal. See this issue.

• FEATURE: vmagent: respect the sample_limit and -promscrape.maxScrapeSize values when scraping targets in stream parsing mode. See this pull request.

• FEATURE: vmauth: add ability to specify mutliple url_prefix entries for balancing the load among multiple vmselect and/or vminsert nodes in a cluster. See these docs.

• FEATURE: vminsert: add -disableRerouting command-line flag for forcibly disabling the rerouting. This should help resolving this and this issues.

• FEATURE: vminsert: reduce the probability of global re-routing storm if all the vmstorage nodes cannot keep up with the given ingestion rate for some time. This should improve cluster stability in such cases. See this and this issues.

• FEATURE: allow building VictoriaMetrics components for Solaris / SmartOS. See this issue.

• FEATURE: vmagent: add ability to debug relabeling rules. See these docs and this issue.

• BUGFIX: reduce CPU usage by up to 2x during querying a database with big number of active daily time series. The issue has been introduced in v1.59.0.

• BUGFIX: vmagent: properly apply auth and tls configs in eureka_sd_configs. See this pull request.

• BUGFIX: vmauth: do not panic on aborted http requests. See this issue.

• BUGFIX: properly generate target property for *Series(foo.*.bar) responses returned from Graphite Render API. Previously the target contained the expanded list of series for foo.*.bar, e.g. sumSeries(foo.a.bar,foo.b.bar,...foo.z.bar). Now VictoriaMetrics returns sumSeries(foo.*.bar) as a target in the same way as Graphite does.

v1.60.0

Released at 2021-05-24

• FEATURE: add ability to limit the number of unique time series, which can be added to storage per hour and per day. This can help dealing with high cardinality and high churn rate issues. See these docs.

• FEATURE: vmagent: add ability to limit the number of unique time series, which can be sent to remote storage systems per hour and per day. This can help dealing with high cardinality and high churn rate issues. See these docs.

• FEATURE: vmalert: add ability to run alerting and recording rules for multiple tenants. See this issue and these docs.

• FEATURE: vminsert: add support for data ingestion via other vminsert nodes. This allows building multi-level data ingestion paths in VictoriaMetrics cluster by writing data from one level of vminsert nodes to another level of vminsert nodes. See these docs and this comment for details.

• FEATURE: vmagent: reload bearer_token_file, credentials_file and password_file contents every second. This allows dynamically changing the contents of these files during target scraping and service discovery without the need to restart vmagent. See this issue.

• FEATURE: vmalert: add a flag to control behaviour on startup for state restore errors. Such errors were returned and logged before as well. Now user can specify whether to just log these errors (-remoteRead.ignoreRestoreErrors=true) or to stop the process (-remoteRead.ignoreRestoreErrors=false). The latter is important when VM isn't ready yet to serve queries from vmalert and it needs to wait. See this issue.

• FEATURE: vmalert: add ability to pass round_digits query arg to datasource via -datasource.roundDigits command-line flag. This can be used for limiting the number of decimal digits after the point in recording rule results. See this issue.

• FEATURE: return X-Server-Hostname header in http responses of all the VictoriaMetrics components. This should simplify tracing the origin server behind a load balancer or behind auth proxy during troubleshooting.

• FEATURE: vmselect: allow to use 2x more memory for query processing at vmselect nodes in VictoriaMetrics cluster. This should allow processing heavy queries without the need to increase RAM size at vmselect nodes.

• FEATURE: add ability to filter /api/v1/status/tsdb output with arbitrary time series selectors passed via match[] query args. See these docs and this issue for details.

• FEATURE: automatically detect memory and cpu limits for VictoriaMetrics components running under cgroup v2 environments such as HashiCorp Nomad. See this issue.

• FEATURE: vmauth: allow -auth.config reloading via /-/reload http endpoint. See this issue.

• FEATURE: add timezone_offset(tz) function. It returns offset in seconds for the given timezone tz relative to UTC. This can be useful when combining with datetime-related functions. For example, day_of_week(time()+timezone_offset("America/Los_Angeles")) would return weekdays for America/Los_Angeles time zone. Special Local time zone can be used for returning an offset for the time zone set on the host where VictoriaMetrics runs. See this issue and MetricsQL docs for more details.

• FEATURE: vmagent: add support for OAuth2 authorization for scrape targets and service discovery in the same way as Prometheus does. See these docs.

• FEATURE: vmagent: add support for OAuth2 authorization when writing data to -remoteWrite.url. See -remoteWrite.oauth2.* config params in /path/to/vmagent -help output.

• FEATURE: vmalert: add ability to set extra_filter_labels at alerting and recording group configs. See these docs.

• FEATURE: vmstorage: reduce memory usage by up to 30% when ingesting big number of active time series.

• BUGFIX: vmagent: do not retry scraping targets, which don't support HTTP. This should reduce CPU load and network usage at vmagent and at scrape target. See this issue.

• BUGFIX: vmagent: fix possible race when refreshing role: endpoints and role: endpointslices scrape targets in kubernetes_sd_config. Prevoiusly pod objects could be updated after the related endpoints object update. This could lead to missing scrape targets. See this issue.

• BUGFIX: vmagent: properly spread scrape targets among vmagent replicas if -promscrape.cluster.replicationFactor exceeds 1. See this pull request.

• BUGFIX: vmagent: limit scrape_timeout by scrape_interval. This guarantees that only a single sample is lost during the configured scrape_interval when scrape target responds slowly. See this comment for details.

• BUGFIX: properly remove stale parts outside the configured retention if -retentionPeriod is smaller than one month. Previously stale parts could remain active for up to a month after they go outside the retention.

• BUGFIX: stop the process on panic errors, since such errors may leave the process in inconsistent state. Previously panics could be recovered, which could result in unexpected hard-to-debug further behavior of running process.

• BUGFIX: vminsert, vmagent: make sure data ingestion connections are closed before completing graceful shutdown. Previously the connection may remain open, which could result in trailing samples loss.

• BUGFIX: vmauth, vmalert: properly re-use HTTP keep-alive connections to backends and datasources. Previously only 2 keep-alive connections per backend could be re-used. Other connections were closed after the first request. See this issue for details.

• BUGFIX: vmalert: fix false positive error result contains metrics with the same labelset after applying rule labels, which could be triggered when recording rules generate unique metrics. See this issue.

• BUGFIX: vmctl: properly import InfluxDB rows if they have a field and a tag with identical names. See this issue.

• BUGFIX: properly reload configs if SIGHUP signal arrives during service initialization. Previously such SIGHUP signal could be ingonred and configs weren't reloaded.

• BUGFIX: vmalert: properly import default rules from OpenShift. See this issue.

• BUGFIX: reduce the probability of the removal queue is full panic when highly loaded VictoriaMetrics stores data on NFS. See this issue.

v1.59.0

Released at 2021-05-01

• FEATURE: improved new time series registration speed on systems with many CPU cores. See this issue. Thanks to @waldoweng for the idea and draft implementation.

• FEATURE: vmalert: use the same technique as Grafana for determining evaluation timestamps for recording rules. This should make consistent graphs for series generated by recording rules compared to graphs generated for queries from recording rules in Grafana. See this issue.

• FEATURE: vmauth: add ability to set madatory query args in url_prefix. For example, url_prefix: http://vm:8428/?extra_label=team=dev would add extra_label=team=dev query arg to all the incoming requests. See the example for more details.

• FEATURE: vmctl: add OpenTSDB migration option. See more details here. Thanks to @johnseekins!

• FEATURE: log metrics with dropped labels if the number of labels in the ingested metric exceeds -maxLabelsPerTimeseries. This should simplify debugging for this case.

• FEATURE: vmagent: list user-visible endpoints at http://vmagent:8429/. See this issue.

• BUGFIX: vmagent: properly update role: endpoints and role: endpointslices scrape targets if the underlying service objects are updated in kubernetes_sd_config. See this issue.

• BUGFIX: vmagent: apply scrape_timeout on receiving the first response byte from stream_parse: true scrape targets. Previously it was applied to receiving and processing the full response stream. This could result in false timeout errors when scrape target exposes millions of metrics as described here.

• BUGFIX: vmagent: eliminate possible data race when obtaining value for the metric vm_persistentqueue_bytes_pending. The data race could result in incorrect value for this metric.

• BUGFIX: vmstorage: remove empty directories on startup. Such directories can be left after unclean shutdown on NFS storage. Previously such directories could lead to crashloop until manually removed. See this issue.

v1.58.0

Released at 2021-04-08

• FEATURE: vminsert and vmagent: add -sortLabels command-line flag for sorting metric labels before pushing them to vmstorage. This should reduce the size of MetricName -> internal_series_id cache (aka vm_cache_size_bytes{type="storage/tsid"}) when ingesting samples for the same time series with distinct order of labels. For example, foo{k1="v1",k2="v2"} and foo{k2="v2",k1="v1"} represent a single time series. Labels sorting is disabled by default, since the majority of established exporters preserve the order of labels for the exported metrics.

• FEATURE: allow specifying label value alongside label name for the others sum time series returned from topk_* and bottomk_* functions from MetricsQL. For example, topk_avg(3, max(process_resident_memory_bytes) by (instance), "instance=other_sum") would return top 3 series from max(process_resident_memory_bytes) by (instance) plus a series containing the sum of other series. The others sum series will have {instance="other_sum"} label.

• FEATURE: do not delete dst_label when applying label_copy(q, "src_label", "dst_label") and label_move(q, "src_label", "dst_label") to series without src_label and with non-empty dst_label. See more details at MetricsQL docs.

• FEATURE: update Go builder from v1.16.2 to v1.16.3. This should fix these issues.

• FEATURE: vmagent: add support for follow_redirects option to scrape_configs section in the same way as Prometheus 2.26 does.

• FEATURE: vmagent: add support for authorization section in -promscrape.config in the same way as Prometheus 2.26 does.

• FEATURE: vmagent: add support for socks5 proxy in proxy_url config option. See this issue.

• FEATURE: vmagent: add support for socks5 over tls proxy in proxy_url config option. It can be set up with the following config: proxy_url: "tls+socks5://proxy-addr:port".

• FEATURE: vmagent: reduce memory usage when -remoteWrite.queues is set to a big value. See this issue.

• FEATURE: vmagent: add AWS IAM roles for tasks support for EC2 service discovery according to these docs.

• FEATURE: vmagent: add support for proxy_tls_config, proxy_authorization, proxy_basic_auth, proxy_bearer_token and proxy_bearer_token_file options in consul_sd_config, dockerswarm_sd_config and eureka_sd_config sections.

• FEATURE: vmagent: pass X-Prometheus-Scrape-Timeout-Seconds header to scrape targets as Prometheus does. In this case scrape targets can limit the time needed for performing the scrape. See this comment for details.

• FEATURE: vmagent: drop corrupted persistent queue files at -remoteWrite.tmpDataPath instead of throwing a fatal error. Corrupted files can appear after unclean shutdown of vmagent such as OOM kill or hardware reset. See this issue.

• FEATURE: vmauth: add support for authorization via bearer token. See the docs for details.

• FEATURE: publish arm64 and amd64 binaries for cluster version of VictoriaMetrics at releases page.

• BUGFIX: properly handle /api/v1/labels and /api/v1/label/<label_name>/values queries on big start ... end time range. This should fix big resource usage when VictoriaMetrics is queried with Promxy v0.0.62 or newer versions.

• BUGFIX: do not break sort order for series returned from topk*, bottomk* and outliersk MetricsQL functions. See this issue.

• BUGFIX: vmagent: properly work with simple HTTP proxies which don't support CONNECT method. For example, PushProx. See this issue.

• BUGFIX: vmagent: properly discover targets if multiple namespace selectors are put inside kubernetes_sd_config. See this issue.

• BUGFIX: vmagent: properly discover role: endpoints and role: endpointslices targets in kubernetes_sd_config. See this issue.

• BUGFIX: properly generate filename for *.tar.gz archive inside _checksums.txt file posted at releases page. See this issue.

v1.57.1

Released at 2021-03-30

• FEATURE: publish vmutils for GOOS=arm on releases page.

• BUGFIX: prevent from possible incomplete query results after timed out query.

• BUGFIX: vmselect: remove -search.storageTimeout command-line flag, since it has the same meaning as -search.maxQueryDuration. See this issue.

• BUGFIX: vminsert: return back type label to per-tenant metric vm_tenant_inserted_rows_total. See this issue.

v1.57.0

Released at 2021-03-29

• FEATURE: optimize query performance by up to 10x on systems with many CPU cores. See this tweet.

• FEATURE: add the following metrics at /metrics page for every VictoraMetrics app:

  • process_resident_memory_anon_bytes - RSS share for memory allocated by the process itself. This share cannot be freed by the OS, so it must be taken into account by OOM killer.
  • process_resident_memory_file_bytes - RSS share for page cache memory (aka memory-mapped files). This share can be freed by the OS at any time, so it must be ignored by OOM killer.
  • process_resident_memory_shared_bytes - RSS share for memory shared with other processes (aka shared memory). This share can be freed by the OS at any time, so it must be ignored by OOM killer.
  • process_resident_memory_peak_bytes - peak RSS usage for the process.
  • process_virtual_memory_peak_bytes - peak virtual memory usage for the process.

• FEATURE: accept and enforce extra_label=<label_name>=<label_value> query arg at Graphite APIs.

• FEATURE: use InfluxDB field as metric name if measurement is empty and -influxSkipSingleField command-line is set. See this issue.

• FEATURE: vmagent: add -promscrape.consul.waitTime command-line flag for tuning the maximum wait time for Consul service discovery. See this issue.

• FEATURE: vmagent: add vm_promscrape_discovery_kubernetes_stale_resource_versions_total metric for monitoring the frequency of too old resource version errors during Kubernetes service discovery.

• FEATURE: single-node VictoriaMetrics: log metrics with timestamps older than -search.cacheTimestampOffset compared to the current time. See these docs for details.

• BUGFIX: prevent from infinite loop on {__graphite__="..."} filters when a metric name contains *, { or [ chars.

• BUGFIX: prevent from infinite loop in /metrics/find and /metrics/expand Graphite Metrics API handlers when they match metric names or labels with *, { or [ chars.

• BUGFIX: do not merge duplicate time series during requests to /api/v1/query. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1141

• BUGFIX: vmagent: properly handle too old resource version error messages from Kubernetes watch API. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1150

• BUGFIX: vmagent: do not retry sending data blocks if remote storage returns 400 Bad Request error. The number of dropped blocks due to such errors can be monitored with vmagent_remotewrite_packets_dropped_total metrics. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1149

• BUGFIX: properly calculate summarize and *Series functions in Graphite Render API.

v1.56.0

Released at 2021-03-17

• FEATURE: add the following functions to MetricsQL:

  • histogram_avg(buckets) - returns the average value for the given buckets.
  • histogram_stdvar(buckets) - returns standard variance for the given buckets.
  • histogram_stddev(buckets) - returns standard deviation for the given buckets.

• FEATURE: export vm_available_memory_bytes and vm_available_cpu_cores metrics, which show the number of available RAM and available CPU cores for VictoriaMetrics apps.

• FEATURE: export vm_index_search_duration_seconds histogram, which can be used for troubleshooting time series search performance.

• FEATURE: vmagent: add ability to replicate scrape targets among vmagent instances in the cluster with -promscrape.cluster.replicationFactor command-line flag. See these docs.

• FEATURE: vmagent: accept scrape_offset option at scrape_config. This option may be useful when scrapes must start at the specified offset of every scrape interval. See these docs for details.

• FEATURE: vmagent: support proxy_tls_config, proxy_basic_auth, proxy_bearer_token and proxy_bearer_token_file options at scrape_config section for configuring proxies specified via proxy_url. See these docs.

• FEATURE: vmauth: allow using regexp paths in url_map. See this issue for details.

• FEATURE: accept round_digits query arg at /api/v1/query and /api/v1/query_range handlers. This option can be set at Prometheus datasource in Grafana for limiting the number of digits after the decimal point in response values.

• FEATURE: add -influx.databaseNames command-line flag, which can be used for accepting data from some Telegraf plugins such as fluentd plugin. See this issue.

• FEATURE: add -logNewSeries command-line flag, which can be used for debugging the source of time series churn rate.

• FEATURE: publish Windows builds for vmagent, vmalert, vmauth and vmctl at vmutils-windows-*.zip archives at releases page.

• FEATURE: listen for IPv6 UDP if -enableTCP6 command-line flag is passed to VictoriaMetrics. See this issue.

• BUGFIX: vmagent: prevent from high CPU usage bug during failing scrapes with small scrape_timeout (less than a few seconds).

• BUGFIX: vmagent: reduce memory usage when Kubernetes service discovery is used in big number of distinct scrape config jobs by sharing Kubernetes object cache. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1113

• BUGFIX: vmagent: apply sample_limit only after metric_relabel_configs are applied as Prometheus does. Previously the sample_limit was applied before metrics relabeling.

• BUGFIX: vmagent: properly apply tls_config, basic_auth and bearer_token to proxy connections if proxy_url option is set. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1116

• BUGFIX: vmagent: properly scrape targets via https proxy specified in proxy_url if insecure_skip_verify flag isn't set in tls_config section. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1116

• BUGFUX: avoid duplicate time series error if prometheus_buckets() covers a time range with distinct set of buckets.

• BUGFIX: prevent exponent overflow when processing extremely small values close to zero such as 2.964393875E-314. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1114

• BUGFIX: do not include datapoints with a timestamp t-d when returning results from /api/v1/query?query=m[d]&time=t as Prometheus does.

• BUGFIX: do not crash if a query contains histogram_over_time() function name with uppercase chars. For example, Histogram_Over_Time(m[5m]).

v1.55.1

Released at 2021-03-03

• BUGFIX: vmagent: fix a panic in Kubernetes service discovery when a target is filtered out with relabeling. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1107
• BUGFIX: vmagent: fix Kubernetes service discovery for role: ingress. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1110

v1.55.0

Released at 2021-03-02

• FEATURE: add sign(q) and clamp(q, min, max) functions, which are planned to be added in the upcoming Prometheus release . The last_over_time(m[d]) function is already supported in MetricsQL.

• FEATURE: vmagent: add scrape_align_interval config option, which can be used for aligning scrapes to the beginning of the configured interval. See these docs for details.

• FEATURE: expose io-related metrics at /metrics page for every VictoriaMetrics component:

  • process_io_read_bytes_total - the number of bytes read via io syscalls such as read and pread
  • process_io_written_bytes_total - the number of bytes written via io syscalls such as write and pwrite
  • process_io_read_syscalls_total - the number of read syscalls such as read and pread
  • process_io_write_syscalls_total - the number of write syscalls such as write and pwrite
  • process_io_storage_read_bytes_total - the number of bytes read from storage layer
  • process_io_storage_written_bytes_total - the number of bytes written to storage layer

• FEATURE: vmagent: add ability to spread scrape targets among multiple vmagent instances. See these docs and this issue for details.

• FEATURE: vmagent: use watch API for Kubernetes service discovery. This should reduce load on Kubernetes API server when it tracks big number of objects (for example, 10K pods). This should also reduce the time needed for k8s targets discovery. See this issue for details.

• FEATURE: vmagent: export vm_promscrape_target_relabel_duration_seconds metric, which can be used for monitoring the time spend on relabeling for discovered targets.

• FEATURE: vmagent: optimize relabeling performance for common cases.

• FEATURE: add increase_pure(m[d]) function to MetricsQL. It works the same as increase(m[d]) except of various edge cases. See this issue for details.

• FEATURE: increase accuracy for buckets_limit(limit, buckets) results for small limit values. See MetricsQL docs for details.

• FEATURE: vmagent: initial support for Windows build with CGO_ENABLED=0 GOOS=windows go build ./app/vmagent. See this and this issue.

• FEATURE: vmagent: support WebIdentityToken auth in EC2 service discovery. See this issue for details.

• FEATURE: vmalert: properly process query params in -datasource.url and -remoteRead.url command-line flags. See this issue for details.

• BUGFIX: vmagent: properly apply -remoteWrite.rateLimit when -remoteWrite.queues is greater than 1. Previously there was a data race, which could prevent from proper rate limiting.

• BUGFIX: vmagent: properly perform graceful shutdown on SIGINT and SIGTERM signals. The graceful shutdown has been broken in v1.54.0. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1065

• BUGFIX: reduce the probability of duplicate time series errors when querying Kubernetes metrics.

• BUGFIX: properly calculate histogram_quantile() over time series with only a single non-zero bucket with {le="+Inf"}. Previously NaN was returned, now the value for the last bucket before {le="+Inf"} is returned like Prometheus does.

• BUGFIX: vmselect: do not cache partial query results on timeout when receiving data from vmstorage nodes. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1085

• BUGFIX: properly handle stale NFS file handle error.

• BUGFIX: properly cache query results when extra_label query arg is used. Previously the cached results could clash for different extra_label values. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1095

• BUGFIX: fix http: superfluous response.WriteHeader call issue. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1078

• BUGFIX: fix arm64 builds due to the issue in github.com/golang/snappy. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1074

• BUGFIX: fix index out of range [1024819115206086200] with length 27 panic, which could occur when 1e-9 value is passed to VictoriaMetrics histogram. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1096

• BUGFIX: fix parsing for Graphite line with empty tags such as foo; 123 456. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1100

• BUGFIX: unescape only \\, \n and \" in label names when parsing Prometheus text exposition format as Prometheus does. Previously other escape sequences could be improperly unescaped.

v1.54.1

Released at 2021-08-18

• BUGFIX: properly handle queries containing a filter on metric name plus any number of negative filters and zero non-negative filters. For example, node_cpu_seconds_total{mode!="idle"}. The bug was introduced in v1.54.0.

v1.54.0

Released at 2021-02-18

• FEATURE: optimize searching for matching metrics for metric{<label_filters>} queries if <label_filters> contains at least a single filter. For example, the query up{job="foobar"} should find the matching time series much faster than previously.

• FEATURE: reduce execution times for q1 <binary_op> q2 queries by executing q1 and q2 in parallel.

• FEATURE: switch from Go1.15 to Go1.16 for building prod binaries.

• FEATURE: single-node VictoriaMetrics now accepts requests to handlers with /prometheus and /graphite prefixes such as /prometheus/api/v1/query. This improves compatibility with handlers from VictoriaMetrics cluster.

• FEATURE: expose process_open_fds and process_max_fds metrics. These metrics can be used for alerting when process_open_fds reaches process_max_fds. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/402 and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1037

• FEATURE: vmalert: add -datasource.appendTypePrefix command-line option for querying both Prometheus and Graphite datasource in cluster version of VictoriaMetrics. See these docs for details.

• FEATURE: vmauth: add ability to route requests from a single user to multiple destinations depending on the requested paths. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1064

• FEATURE: remove dependency on external programs such as cat, grep and cut when detecting cpu and memory limits inside Docker or LXC container.

• FEATURE: vmagent: add __meta_kubernetes_endpoints_label_*, __meta_kubernetes_endpoints_labelpresent_*, __meta_kubernetes_endpoints_annotation_* and __meta_kubernetes_endpoints_annotationpresent_* labels for role: endpoints in Kubernetes service discovery. These labels where added in Prometheus 2.25.

• FEATURE: reduce the minimum supported retention period for inverted index (aka indexdb) from one month to one day. This should reduce disk space usage for <-storageDataPath>/indexdb folder if -retentionPeriod is set to values smaller than one month.

• FEATURE: vmselect: export per-tenant metrics vm_vmselect_http_requests_total and vm_vmselect_http_requests_duration_ms_total . Other per-tenant metrics are available as a part of enterprise package. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/932 for details.

• BUGFIX: properly convert regexp tag filters containing escaped dots to non-regexp tag filters. For example, {foo=~"bar\.baz"} should be converted to {foo="bar.baz"}. Previously it was incorrectly converted to {foo="bar\.baz"}, which could result in missing time series for this tag filter.

• BUGFIX: do not spam error logs when discovering Docker Swarm targets without dedicated IP. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1028 .

• BUGFIX: properly embed timezone data into VictoriaMetrics apps. This should fix -loggerTimezone usage inside Docker containers.

• BUGFIX: properly build Docker images for non-amd64 architectures (arm, arm64, ppc64le, 386) on Docker hub. Previously these images were incorrectly based on amd64 base image, so they didn't work.

• BUGFIX: vmagent: return back unsent block to the queue during graceful shutdown. Previously this block could be dropped if remote storage is unavailable during vmagent shutdown. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1065 .

v1.53.1

Released at 2021-02-03

• BUGFIX: vmselect: fix the bug peventing from proper searching by Graphite filter with wildcards such as {__graphite__="foo.*.bar"}.

v1.53.0

Released at 2021-02-03

• FEATURE: added vmctl tool to VictoriaMetrics release process. Now it is packaged in vmutils-*.tar.gz archive on the releases page. Source code for vmctl tool has been moved from github.com/VictoriaMetrics/vmctl to github.com/VictoriaMetrics/VictoriaMetrics/app/vmctl.

• FEATURE: added -loggerTimezone command-line flag for adjusting time zone for timestamps in log messages. By default UTC is used.

• FEATURE: added -search.maxStepForPointsAdjustment command-line flag, which can be used for disabling adjustment for points returned by /api/v1/query_range handler if such points have timestamps closer than -search.latencyOffset to the current time. Such points may contain incomplete data, so they are substituted by the previous values for step query args smaller than one minute by default.

• FEATURE: vmselect: added ability to use Graphite-compatible filters in MetricsQL via {__graphite__="foo.*.bar"} syntax. This expression is equivalent to {__name__=~"foo[.][^.]*[.]bar"}, but it works faster and it is easier to use when migrating from Graphite to VictoriaMetrics. This feature deprecates the usage of -search.treatDotsAsIsInRegexps command-line flag.

• FEATURE: vmselect: added ability to set additional label filters, which must be applied during queries. Such label filters can be set via optional extra_label query arg, which is accepted by querying API handlers. For example, the request to /api/v1/query_range?extra_label=tenant_id=123&query=<query> adds {tenant_id="123"} label filter to the given <query>. It is expected that the extra_label query arg is automatically set by auth proxy sitting in front of VictoriaMetrics. Contact us if you need assistance with such a proxy. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1021 .

• FEATURE: vmalert: added -datasource.queryStep command-line flag for passing optional step query arg to /api/v1/query endpoint. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1025

• FEATURE: vmalert: added ability to query Graphite datasource when evaluating alerting and recording rules. See these docs for details.

• FEATURE: vmagent: added -remoteWrite.roundDigits command-line option for rounding metric values to the given number of decimal digits after the point before sending the metric to the corresponding -remoteWrite.url. This option can be used for improving data compression on the remote storage, because values with lower number of decimal digits can be compressed better than values with bigger number of decimal digits.

• FEATURE: vmagent: added -remoteWrite.rateLimit command-line flag for limiting data transfer rate to -remoteWrite.url. This may be useful when big amounts of buffered data is sent after temporarily unavailability of the remote storage. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1035

• FEATURE: vmagent: export the following additional metrics, which may be useful during troubleshooting:

  • vm_promscrape_scrapes_failed_per_url_total
  • vm_promscrape_scrapes_skipped_by_sample_limit_per_url_total
  • vm_promscrape_discovery_requests_total
  • vm_promscrape_discovery_retries_total
  • vm_promscrape_scrape_retries_total
  • vm_promscrape_service_discovery_duration_seconds

• FEATURE: vmselect: initial implementation for Graphite Render API.

• BUGFIX: vmagent: reduce HTTP reconnection rate for scrape targets. Previously vmagent could errorneusly close HTTP keep-alive connections more frequently than needed.

• BUGFIX: vmagent: retry scrape and service discovery requests when the remote server closes HTTP keep-alive connection. Previously disable_keepalive: true option could be used under scrape_configs section when working with such servers.

v1.52.0

Released at 2021-01-13

• FEATURE: provide a sample list of alerting rules for VictoriaMetrics components. It is available here.

• FEATURE: disable final merge for data for the previous month at the beginning of new month, since it may result in high disk IO and CPU usage. Final merge can be enabled by setting -finalMergeDelay command-line flag to positive duration.

• FEATURE: add tfirst_over_time(m[d]) and tlast_over_time(m[d]) functions to MetricsQL for returning timestamps for the first and the last data point in m over d duration.

• FEATURE: add ability to pass multiple labels to sort_by_label() and sort_by_label_desc() functions. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/992 .

• FEATURE: enforce at least TLS v1.2 when accepting HTTPS requests if -tls, -tlsCertFile and -tlsKeyFile command-line flags are set, because older TLS protocols such as v1.0 and v1.1 have been deprecated due to security vulnerabilities.

• FEATURE: support extra_label query arg for all HTTP-based data ingestion protocols. This query arg can be used for specifying extra labels which should be added for the ingested data.

• FEATURE: vmbackup: increase backup chunk size from 128MB to 1GB. This should reduce the number of Object storage API calls during backups by 8x. This may also reduce costs, since object storage API calls usually have non-zero costs. See https://aws.amazon.com/s3/pricing/ and https://cloud.google.com/storage/pricing#operations-pricing .

• BUGFIX: properly parse escaped unicode chars in MetricsQL metric names, label names and function names. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/990

• BUGFIX: override user-provided labels with labels set in extra_label query args during data ingestion over HTTP-based protocols.

• BUGFIX: vmagent: prevent from dialing to the given TCP address time out error when scraping big number of unavailable targets. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/987

• BUGFIX: vmagent: properly show scrape duration on /targets page. Previously it was incorrectly shown as 0.000s.

• BUGFIX: vmagent: properly log errors when -promscrape.streamParse command-line flag is set. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1009

• BUGFIX: vmagent: properly suppress errors when both -promscrape.suppressScrapeErrors and -promscrape.streamParse command-line flags are set. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1009 .

• BUGFIX: vmalert: return non-empty result in template func query stub to pass validation. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/989 .

• BUGFIX: upgrade base image for Docker packages from Alpine 3.12.1 to Alpine 3.12.3 in order to fix potential security issues. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1010

v1.51.0

Released at 2020-12-27

• FEATURE: add /api/v1/status/top_queries handler, which returns the most frequently executed queries and queries that took the most time for execution. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/907

• FEATURE: vmagent: add support for proxy_url config option in Prometheus scrape configs. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/503

• FEATURE: remove parts with stale data as soon as they go outside the configured -retentionPeriod. Previously such parts may remain active for long periods of time. This should help reducing disk usage for -retentionPeriod smaller than one month.

• FEATURE: vmalert: allow setting multiple values for -notifier.tlsInsecureSkipVerify command-line flag per each -notifier.url.

• BUGFIX: vmalert: properly escape multiline queries when passing them to Grafana. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/890

• BUGFIX: vmagent: set missing __meta_kubernetes_service_* labels in kubernetes_sd_config for endpoints and endpointslices roles. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/982

• BUGFIX: do not adjust offset value provided in MetricsQL query. Previously it could be modified in order to improve response cache hit ratio. This is unneeded, since cache hit ratio should remain good because the query time range should be already aligned to multiple of step values. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/976

v1.50.2

Released at 2020-12-19

• FEATURE: do not publish duplicate Docker images with -cluster tag suffix for vmagent, vmalert, vmauth, vmbackup and vmrestore, since they are identical to images without -cluster tag suffix.

• BUGFIX: vmalert: properly populate template variables. This has been broken in v1.50.0. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/974

• BUGFIX: properly parse negative combined duration in MetricsQL such as -1h3m4s. It must be parsed as -(1h + 3m + 4s). Prevsiously it was parsed as -1h + 3m + 4s.

• BUGFIX: properly parse lines in Prometheus exposition format and in OpenMetrics format with whitespace after the timestamp. For example, foo 123 456 ## some comment here. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/970

v1.50.1

Released at 2020-12-15

• FEATURE: vmagent: export vmagent_remotewrite_blocks_sent_total and vmagent_remotewrite_blocks_sent_total metrics for each -remoteWrite.url.

• BUGFIX: vmagent: properly delete unregistered scrape targets from /targets and /api/v1/targets pages. They weren't deleted due to the bug in v1.50.0.

v1.50.0

Released at 2020-12-15

• FEATURE: automatically reset response cache when samples with timestamps older than now - search.cacheTimestampOffset are ingested to VictoriaMetrics. This makes unnecessary disabling response cache during data backfilling or resetting it after backfilling is complete as described in these docs. This feature applies only to single-node VictoriaMetrics. It doesn't apply to cluster version of VictoriaMetrics because vminsert nodes don't know about vmselect nodes where the response cache must be reset.

• FEATURE: vmalert: add query, first and value functions to alert templates. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/539

• FEATURE: vmagent: return user-friendly HTML page when requesting /targets page from web browser. The page is returned in the old plaintext format when requesting via curl or similar tool.

• FEATURE: allow multiple whitespace chars between measurements, fields and timestamp when parsing InfluxDB line protocol. Though InfluxDB line protocol denies multiple whitespace chars between these entities, some apps improperly put multiple whitespace chars. This workaround allows accepting data from such apps.

• FEATURE: export vm_promscrape_active_scrapers{type="<sd_type>"} metric for tracking the number of active scrapers per each service discovery type.

• FEATURE: export vm_promscrape_scrapers_started_total{type="<sd_type>"} and vm_promscrape_scrapers_stopped_total{type="<sd_type>"} metrics for tracking churn rate for scrapers per each service discovery type.

• FEATURE: vmagent: allow setting per--remoteWrite.url command-line flags for -remoteWrite.sendTimeout and -remoteWrite.tlsInsecureSkipVerify.

• BUGFIX: properly handle * and [...] inside curly braces in query passed to Graphite Metrics API. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/952

• BUGFIX: vmagent: fix memory leak when big number of targets is discovered via service discovery.

• BUGFIX: vmagent: properly pass datacenter filter to Consul API server. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574#issuecomment-740454170

• BUGFIX: properly handle CPU limits set on the host system or host container. The bugfix may result in lower memory usage on systems with CPU limits. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946

• BUGFIX: prevent from duplicate name tag returned from /tags/autoComplete/tags handler. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/942

• BUGFIX: do not enable strict parsing for -promscrape.config if -promscrape.config.dryRun comand-line flag is set. Strict parsing can be enabled with -promscrape.config.strictParse command-line flag. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/944

• BUGFIX: vminsert: properly update vm_rpc_rerouted_rows_processed_total metric. Previously it wasn't updated. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/955

• BUGFIX: vmagent: properly recover when opening incorrectly stored persistent queue. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/964

• BUGFIX: vmagent: properly handle scrape errors when stream parsing is enabled with -promscrape.streamParse command-line flag or with stream_parse: true per-target config option. Previously such errors weren't reported at /targets page. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/967

• BUGFIX: assume the previous value is 0 when calculating increase() for the first point on the graph if its value doesn't exceed 100 and the delta between two first points equals to 0. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/962

v1.49.0

Released at 2020-12-05

• FEATURE: optimize Consul service discovery speed when discovering big number of services. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/574

• FEATURE: add label_uppercase(q, label1, ... labelN) and label_lowercase(q, label1, ... labelN) function to MetricsQL for uppercasing and lowercasing values for the given labels. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/936

• FEATURE: add count_eq_over_time(m[d], N) and count_ne_over_time(m[d], N) for counting the number of samples for m over d that (equal / not equal) to N.

• FEATURE: do not print usage info for all the command-line flags when incorrect command-line flag is passed. Previously it could be hard reading the error message about incorrect command-line flag because of too big usage info for all the flags.

• FEATURE: upgrade Go builder from v1.15.5 to v1.15.6 . This fixes issues found in Go since v1.15.5.

• BUGFIX: properly parse timestamps in OpenMetrics format - they are exposed as floating-point number in seconds instead of integer milliseconds unlike in Prometheus exposition format. See the docs.

• BUGFIX: return nan for a >bool b query when a equals to nan like Prometheus does. Previously 0 was returned in this case. This applies to any comparison operation with bool modifier. See these docs for details.

• BUGFIX: properly parse hex numbers in MetricsQL. Previously hex numbers with non-decimal digits such as 0x3b couldn't be parsed.

• BUGFIX: handle time() cmp_op metric like Prometheus does - i.e. return metric value if cmp_op comparison is true. Previously time() value was returned.

• BUGFIX: return nan for minute(m) query when m equals to nan like Prometheus does. This applies to all the time-related functions such as day_of_month, day_of_week, days_in_month, hour, month and year.

v1.48.0

Released at 2020-11-26

• FEATURE: added Snap package for single-node VictoriaMetrics. This simplifies installation under Ubuntu to a single command:

  snap install victoriametrics
  

• FEATURE: vmselect: add -replicationFactor command-line flag for reducing query duration when replication is enabled and a part of vmstorage nodes are temporarily slow and/or temporarily unavailable. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/711

• FEATURE: vminsert: export vm_rpc_vmstorage_is_reachable metric, which can be used for monitoring reachability of vmstorage nodes from vminsert nodes.

• FEATURE: vmagent: add Netflix Eureka service discovery (aka eureka_sd_config). See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/851

• FEATURE: add filters option to dockerswarm_sd_config like Prometheus did in v2.23.0 - see https://github.com/prometheus/prometheus/pull/8074

• FEATURE: expose __meta_ec2_ipv6_addresses label for ec2_sd_config like Prometheus will do in the next release.

• FEATURE: add -loggerWarnsPerSecondLimit command-line flag for rate limiting of WARN messages in logs. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/905

• FEATURE: apply loggerErrorsPerSecondLimit and -loggerWarnsPerSecondLimit rate limit per caller. I.e. log messages are suppressed if the same caller logs the same message at the rate exceeding the given limit. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/905#issuecomment-729395855

• FEATURE: add remoteAddr to slow query log in order to simplify identifying the client that sends slow queries to VictoriaMetrics. Slow query logging is controlled with -search.logSlowQueryDuration command-line flag.

• FEATURE: add /tags/delSeries handler from Graphite Tags API. See https://docs.victoriametrics.com/#graphite-tags-api-usage

• FEATURE: log metric name plus all its labels when the metric timestamp is out of the configured retention. This should simplify detecting the source of metrics with unexpected timestamps.

• FEATURE: add -dryRun command-line flag to single-node VictoriaMetrics in order to check config file pointed by -promscrape.config.

• BUGFIX: properly parse Prometheus metrics with exemplars such as foo 123 ## {bar="baz"} 1.

• BUGFIX: properly parse "infinity" values in OpenMetrics format. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/924

v1.47.0

Released at 2020-11-16

• FEATURE: vmselect: return the original error from vmstorage node in query response if -search.denyPartialResponse is set. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/891

• FEATURE: vmselect: add "isPartial":{true|false} field in JSON output for /api/v1/* functions from Prometheus querying API. "isPartial":true is set if the response contains partial data because of a part of vmstorage nodes were unavailable during query processing.

• FEATURE: improve performance for /api/v1/series, /api/v1/labels and /api/v1/label/<labelName>/values on time ranges exceeding one day.

• FEATURE: vmagent: reduce memory usage when service discovery detects big number of scrape targets and the set of discovered targets changes over time. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825

• FEATURE: vmagent: add -promscrape.dropOriginalLabels command-line option, which can be used for reducing memory usage when scraping big number of targets. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825#issuecomment-724308361 for details.

• FEATURE: vmalert: explicitly set extra labels to alert entities. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/870

• FEATURE: add -search.treatDotsAsIsInRegexps command-line flag, which can be used for automatic escaping of dots in regexp label filters used in queries. For example, if -search.treatDotsAsIsInRegexps is set, then the query foo{bar=~"aaa.bb.cc|dd.eee"} is automatically converted to foo{bar=~"aaa\\.bb\\.cc|dd\\.eee"}. This may be useful for querying Graphite data.

• FEATURE: consistently return text-based HTTP responses such as plain/text and application/json with charset=utf-8. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/897

• FEATURE: update Go builder from v1.15.4 to v1.15.5. This should fix these issues in Go.

• FEATURE: added /internal/force_flush http handler for flushing recently ingested data from in-memory buffers to persistent storage. See troubleshooting docs for more details.

• FEATURE: added Graphite Tags API support. See these docs for details.

• BUGFIX: do not return data points in the end of the selected time range for time series ending in the middle of the selected time range. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/887 and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/845

• BUGFIX: remove spikes at the end of time series gaps for increase() or delta() functions. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/894

• BUGFIX: vminsert: properly return HTTP 503 status code when all the vmstorage nodes are unavailable. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/896

v1.46.0

Released at 2020-11-07

• FEATURE: optimize requests to /api/v1/labels and /api/v1/label/<name>/values when start and end args are set.

• FEATURE: reduce memory usage when query touches big number of time series.

• FEATURE: vmagent: reduce memory usage when kubernetes_sd_config discovers big number of scrape targets (e.g. hundreds of thousands) and the majority of these targets (99%) are dropped during relabeling. Previously labels for all the dropped targets were displayed at /api/v1/targets page. Now only up to -promscrape.maxDroppedTargets such targets are displayed. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/878 for details.

• FEATURE: vmagent: reduce memory usage when scraping big number of targets with big number of temporary labels starting with __. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825

• FEATURE: vmagent: add /ready HTTP endpoint, which returns 200 OK status code when all the service discovery has been initialized. This may be useful during rolling upgrades. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/875

• BUGFIX: vmagent: eliminate data race when -promscrape.streamParse command-line is set. Previously this mode could result in scraped metrics with garbage labels. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825#issuecomment-723198247 for details.

• BUGFIX: properly calculate topk_* and bottomk_* functions from MetricsQL for time series with gaps. See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/883

v1.45.0

Released at 2020-11-02

• FEATURE: allow setting -retentionPeriod smaller than one month. I.e. -retentionPeriod=3d, -retentionPeriod=2w, etc. is supported now. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/173

• FEATURE: optimize more cases according to https://utcc.utoronto.ca/~cks/space/blog/sysadmin/PrometheusLabelNonOptimization . Now the following cases are optimized too:

  • rollup_func(foo{filters}[d]) op bar -> rollup_func(foo{filters}[d]) op bar{filters}
  • transform_func(foo{filters}) op bar -> transform_func(foo{filters}) op bar{filters}
  • num_or_scalar op foo{filters} op bar -> num_or_scalar op foo{filters} op bar{filters}

• FEATURE: improve time series search for queries with multiple label filters. I.e. foo{label1="value", label2=~"regexp"}. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/781

• FEATURE: vmagent: add stream parse mode. This mode allows reducing memory usage when individual scrape targets expose tens of millions of metrics. For example, during scraping Prometheus in federation mode. See -promscrape.streamParse command-line option and stream_parse: true config option for scrape_config section in -promscrape.config. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/825 and troubleshooting docs for vmagent.

• FEATURE: vmalert: add -dryRun command-line option for validating the provided config files without the need to start vmalert service.

• FEATURE: accept optional third argument of string type at topk_* and bottomk_* functions. This is label name for additional time series to return with the sum of time series outside top/bottom K. See MetricsQL docs for more details.

• FEATURE: vmagent: expose /api/v1/targets page according to the corresponding Prometheus API. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/643

• BUGFIX: vmagent: properly handle OpenStack endpoint ending with v3.0 such as https://ostack.example.com:5000/v3.0 in the same way as Prometheus does. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728#issuecomment-709914803

• BUGFIX: drop trailing data points for time series with a single raw sample. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/748

• BUGFIX: do not drop trailing data points for instant queries to /api/v1/query. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/845

• BUGFIX: vmbackup: fix panic when -origin isn't specified. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/856

• BUGFIX: vmalert: skip automatically added labels on alerts restore. Label alertgroup was introduced in this issue and automatically added to generated time series. By mistake, this new label wasn't correctly purged on restore event and affected alert's ID uniqueness. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/870

• BUGFIX: vmagent: fix panic at scrape error body formating. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/864

• BUGFIX: vmagent: add leading missing slash to metrics path like Prometheus does. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/835

• BUGFIX: vmagent: drop packet if remote storage returns 4xx status code. This make the behaviour consistent with Prometheus. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/873

• BUGFIX: vmagent: properly handle 301 redirects. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/869

v1.44.0

Released at 2020-10-13

• FEATURE: automatically add missing label filters to binary operands as described at https://utcc.utoronto.ca/~cks/space/blog/sysadmin/PrometheusLabelNonOptimization . This should improve performance for queries with missing label filters in binary operands. For example, the following query should work faster now, because it shouldn't fetch and discard time series for node_filesystem_files_free metric without matching labels for the left side of the expression:

     node_filesystem_files{ host="$host", mountpoint="/" } - node_filesystem_files_free
  

• FEATURE: vmagent: add Docker Swarm service discovery (aka dockerswarm_sd_config). See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/656

• FEATURE: add ability to export data in CSV format. See these docs for details.

• FEATURE: vmagent: add -promscrape.suppressDuplicateScrapeTargetErrors command-line flag for suppressing duplicate scrape target errors. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/651 and https://docs.victoriametrics.com/vmagent.html#troubleshooting .

• FEATURE: vmagent: show original labels before relabeling is applied on duplicate scrape target errors. This should simplify debugging for incorrect relabeling. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/651

• FEATURE: vmagent: /targets page now accepts optional show_original_labels=1 query arg for displaying original labels for each target before relabeling is applied. This should simplify debugging for target relabeling configs. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/651

• FEATURE: add -finalMergeDelay command-line flag for configuring the delay before final merge for per-month partitions. The final merge is started after no new data is ingested into per-month partition during -finalMergeDelay.

• FEATURE: add vm_rows_added_to_storage_total metric, which shows the total number of rows added to storage since app start. The sum(rate(vm_rows_added_to_storage_total)) can be smaller than sum(rate(vm_rows_inserted_total)) if certain metrics are dropped due to relabeling. The sum(rate(vm_rows_added_to_storage_total)) can be bigger than sum(rate(vm_rows_inserted_total)) if replication is enabled.

• FEATURE: keep metric name after applying MetricsQL functions, which don't change time series meaning. The list of such functions:

  • keep_last_value
  • keep_next_value
  • interpolate
  • running_min
  • running_max
  • running_avg
  • range_min
  • range_max
  • range_avg
  • range_first
  • range_last
  • range_quantile
  • smooth_exponential
  • ceil
  • floor
  • round
  • clamp_min
  • clamp_max
  • max_over_time
  • min_over_time
  • avg_over_time
  • quantile_over_time
  • mode_over_time
  • geomean_over_time
  • holt_winters
  • predict_linear See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/674

• BUGFIX: properly handle stale time series after K8S deployment. Previously such time series could be double-counted. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/748

• BUGFIX: return a single time series at max from absent() function like Prometheus does.

• BUGFIX: vmalert: accept days, weeks and years in for: part of config like Prometheus does. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/817

• BUGFIX: fix mode_over_time(m[d]) calculations. Previously the function could return incorrect results.

v1.43.0

Released at 2020-10-06

• FEATURE: reduce CPU usage for repeated queries over sliding time window when no new time series are added to the database. Typical use cases: repeated evaluation of alerting rules in vmalert or dashboard auto-refresh in Grafana.

• FEATURE: vmagent: add OpenStack service discovery aka openstack_sd_config. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728 .

• FEATURE: vmalert: make -maxIdleConnections configurable for datasource HTTP client. This option can be used for minimizing connection churn. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/795 .

• FEATURE: add -influx.maxLineSize command-line flag for configuring the maximum size for a single InfluxDB line during parsing. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/807

• BUGFIX: properly handle inf values during background merge of LSM parts. Previously Inf values could result in NaN values for adjacent samples in time series. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/805 .

• BUGFIX: fill gaps on graphs for range_* and running_* functions. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/806 .

• BUGFIX: make a copy of label with new name during relabeling with action: labelmap in the same way as Prometheus does. Previously the original label name has been replaced. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/812 .

• BUGFIX: support parsing floating-point timestamp like Graphite Carbon does. Such timestmaps are truncated to seconds.

v1.42.0

Released at 2020-09-30

• FEATURE: use all the available CPU cores when accepting data via a single TCP connection for all the supported protocols. Previously data ingested via a single TCP connection could use only a single CPU core. This could limit data ingestion performance. The main benefit of this feature is that data can be imported at max speed via a single connection - there is no need to open multiple concurrent connections to VictoriaMetrics or vmagent in order to achieve the maximum data ingestion speed.

• FEATURE: cluster: improve performance for data ingestion path from vminsert to vmstorage nodes. The maximum data ingestion performance for a single connection between vminsert and vmstorage node scales with the number of available CPU cores on vmstorage side. This should help with https://github.com/VictoriaMetrics/VictoriaMetrics/issues/791 .

• FEATURE: add ability to export / import data in native format via /api/v1/export/native and /api/v1/import/native. This is the most optimized approach for data migration between VictoriaMetrics instances. Both single-node and cluster instances are supported. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/787#issuecomment-700632551 .

• FEATURE: add reduce_mem_usage query option to /api/v1/export in order to reduce memory usage during data export / import. See these docs for details.

• FEATURE: improve performance for /api/v1/series handler when it returns big number of time series.

• FEATURE: add vm_merge_need_free_disk_space metric, which can be used for estimating the number of deferred background data merges due to the lack of free disk space. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/686 .

• FEATURE: add OpenBSD support. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/785 .

• BUGFIX: properly apply -search.maxStalenessInterval command-line flag value. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/784 .

• BUGFIX: fix displaying data in Grafana tables. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/720 .

• BUGFIX: do not adjust the number of detected CPU cores found at /sys/devices/system/cpu/online. The adjustment was increasing the resulting GOMAXPROC by 1, which looked confusing to users. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/685#issuecomment-698595309 .

• BUGFIX: vmagent: do not show -remoteWrite.url in initial logs if -remoteWrite.showURL isn't set. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/773 .

• BUGFIX: properly handle case when /metrics/find finds both a leaf and a node for the given query=prefix.*. In this case only the node must be returned with stripped dot in the end of id as carbonapi does.

Previous releases

See releases page.