update wiki pages

Vika 2022-06-10 07:35:26 +00:00
parent 60e4f3aa24
commit 913d2c8350
3 changed files with 5 additions and 0 deletions

@ -23,6 +23,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
* FEATURE: add support of `lowercase` and `uppercase` relabeling actions in the same way as [Prometheus 2.36.0 does](https://github.com/prometheus/prometheus/releases/tag/v2.36.0). See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2664).
* 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](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2574).
* 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](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2673).
* FEATURE: accept optional `limit` query arg at [/api/v1/labels](https://prometheus.io/docs/prometheus/latest/querying/api/#getting-label-names) and [/api/v1/label_values](https://prometheus.io/docs/prometheus/latest/querying/api/#querying-label-values) for limiting the numbef of sample entries returned from these endpoints. See [these docs](https://docs.victoriametrics.com/#prometheus-querying-api-enhancements).
* FEATURE: [vmalert](https://docs.victoriametrics.com/vmalert.html): support `limit` param per-group for limiting number of produced samples per each rule. Thanks to @Howie59 for [implementation](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/2676).
* FEATURE: [vmalert](https://docs.victoriametrics.com/vmalert.html): remove dependency on Internet access at [web API pages](https://docs.victoriametrics.com/vmalert.html#web). Previously the functionality and the layout of these pages was broken without Internet access. See [shis issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2594).
* FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): 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.

@ -607,6 +607,8 @@ For example, the following query would return data for the last 30 minutes: `/ap
VictoriaMetrics accepts `round_digits` query arg for `/api/v1/query` and `/api/v1/query_range` handlers. It can be used for rounding response values to the given number of digits after the decimal point. For example, `/api/v1/query?query=avg_over_time(temperature[1h])&round_digits=2` would round response values to up to two digits after the decimal point.
VictoriaMetrics accepts `limit` query arg for `/api/v1/labels` and `/api/v1/label/<labelName>/values` handlers for limiting the number of returned entries. For example, the query to `/api/v1/labels?limit=5` returns a sample of up to 5 unique labels, while ignoring the rest of labels. If the provided `limit` value exceeds the corresponding `-search.maxTagKeys` / `-search.maxTagValues` command-line flag values, then limits specified in the command-line flags are used.
By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range.
Additionally, VictoriaMetrics provides the following handlers:

@ -611,6 +611,8 @@ For example, the following query would return data for the last 30 minutes: `/ap
VictoriaMetrics accepts `round_digits` query arg for `/api/v1/query` and `/api/v1/query_range` handlers. It can be used for rounding response values to the given number of digits after the decimal point. For example, `/api/v1/query?query=avg_over_time(temperature[1h])&round_digits=2` would round response values to up to two digits after the decimal point.
VictoriaMetrics accepts `limit` query arg for `/api/v1/labels` and `/api/v1/label/<labelName>/values` handlers for limiting the number of returned entries. For example, the query to `/api/v1/labels?limit=5` returns a sample of up to 5 unique labels, while ignoring the rest of labels. If the provided `limit` value exceeds the corresponding `-search.maxTagKeys` / `-search.maxTagValues` command-line flag values, then limits specified in the command-line flags are used.
By default, VictoriaMetrics returns time series for the last 5 minutes from `/api/v1/series`, while the Prometheus API defaults to all time. Use `start` and `end` to select a different time range.
Additionally, VictoriaMetrics provides the following handlers: