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128 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
bdb743c88d
app/vmselect/promql: add drop_empty_series() function for dropping empty series before performing additional calculations 
This can be useful in the following queries:

   drop_empty_series(temperature <= 30) default 40

This query drops temperature series with all the values bigger than 30 on the selected time range,
while replacing gaps in the remaining series with 40.

The query without drop_empty_series:

  (temperature <= 30) default 40

would leave all the temperature series with all the values bigger than 30 on the selected time range,
and replace all their values with 40. This is not what could be epxected in some cases
like here - https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5071
 2023-10-16 20:44:56 +02:00
Haleygo
dc28196237
vmalert-tool: implement unittest (#4789) 
1. split package rule under /app/vmalert, expose needed objects
2. add vmalert-tool with unittest subcmd

https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2945
 2023-10-13 13:54:33 +02:00
Aliaksandr Valialkin
1c0e065216
app/vmselect/promql: add support for _ delimiters in numeric values 
For example, 1_234_567_890 is equivalent to 1234567890,
while 1.234_567_890 is equivalent to 1.234567890
 2023-08-30 14:33:41 +02:00
Damon07
3f6efab6ae
{app/vmselect,docs}: support share_eq_over_time#4441 (#4725) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4441

Co-authored-by: wangm <wangmm@tuya.com>
 2023-07-31 15:23:59 +02:00
yrka
44cfcfe62e
Update MetricsQL.md (#4689) 
misspell
 2023-07-21 18:59:23 +04:00
Aliaksandr Valialkin
8815080030
app/vmselect/promql: add the ability to copy all the labels from one side of group_left()/group_right() operation 
This is performed by specifying `*` inside group_left()/group_right().
Also allow specifying prefix for the copied labels via `group_left(...) prefix "..."` and `group_right(...) prefix "..."` syntax.
For example, the following query adds all the namespace-related labels to pod info, and prefixes all the copied label names with "ns_" prefix:

  kube_pod_info * on(namespace) group_left(*) prefix "ns_" kube_namespace_labels

This resolves the following StackOverflow questions:

- https://stackoverflow.com/questions/76661818/how-to-add-namespace-labels-to-pod-labels-in-prometheus
- https://stackoverflow.com/questions/76653997/how-can-i-make-a-new-copy-of-kube-namespace-labels-metric-with-a-different-name
 2023-07-17 19:07:39 -07:00
Aliaksandr Valialkin
be31bdc88c
app/vmselect/promql: recommend to use (a op b) keep_metric_names instead of a op b keep_metric_names 
The `a op b keep_metric_names` is ambigouos to `a op (b keep_metric_names)` when `b` is a transform or rollup function.
For example, `a + rate(b) keep_metric_names`. So it is better to use more clear syntax: `(a op b) keep_metric_names`

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3710
 2023-07-16 23:46:34 -07:00
Zakhar Bessarab
e2367b6d1c
metricsql: add support of using keep_metric_names for binary operations (#4109) 
* metricsql: add support of using keep_metric_names for binary operations

This should help to avoid confusion with queries like one in the issue #3710.

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>

* wip

---------

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-07-16 03:00:39 -07:00
Aliaksandr Valialkin
4cb024d8a3
all: add support for or filters in series selectors 
This commit adds ability to select series matching distinct filters via a single series selector.
For example, the following selector selects series with either {env="prod",job="a"}
or {env="dev",job="b"} labels:

  {env="prod",job="a" or env="dev",job="b"}

The `or` filter is supported in all the VictoriaMetrics tools now.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3997
Uses https://github.com/VictoriaMetrics/metricsql/pull/14
 2023-07-16 00:06:33 -07:00
hagen1778
a525eb06b6 docs/metricsql: fix typo in expression 
Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2023-06-21 04:14:15 -07:00
Alexander Marshalov
2e494e2375
fixed typos in documentation and commandline flags descriptions (#4275) 2023-05-10 09:50:41 +02:00
Artem Navoiev
ee1da35071 prepare static docs to migration 
Signed-off-by: Artem Navoiev <tenmozes@gmail.com>
 2023-04-30 12:33:36 +02:00
Aliaksandr Valialkin
92199c964c
docs/MetricsQL.md: quote min, max and avg args for rollup_*() functions in order to reduce the level of confusion when users try to pass the second argument to these functions 2023-03-26 00:01:51 -07:00
Roman Khavronenko
dac21d874b
metricsql: support optional 2nd argument for rollup functions (#3841) 
* metricsql: support optional 2nd argument for rollup functions

Support optional 2nd argument `min`, `max` or `avg` for rollup functions:
 * rollup
 * rollup_delta
 * rollup_deriv
 * rollup_increase
 * rollup_rate
 * rollup_scrape_interval

 If second argument is passed, then rollup function will return 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[5m], "max")`.

Signed-off-by: hagen1778 <roman@victoriametrics.com>

* wip

---------

Signed-off-by: hagen1778 <roman@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2023-02-24 13:47:52 -08:00
Aliaksandr Valialkin
2cea923ff7
app/vmselect/promql: add share(q) aggregate function for normalizing results across multiple time series in [0..1] value range per each timestamp and aggregation group 2023-02-18 22:42:01 -08:00
Aliaksandr Valialkin
c86f1f1d1b
app/vmselect/promql: add range_zscore(q) and range_trim_zscore(z, q) functions 
These functions may be useful for dropping outliers at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3759
 2023-02-18 22:41:59 -08:00
Aliaksandr Valialkin
406822a16c
app/vmselect/promql: add range_mad(q) and range_trim_outliers(k, q) functions 
These functions may help trimming outliers during query time
for the use case described at https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3759
 2023-02-18 15:19:10 -08:00
Aliaksandr Valialkin
b11bdc46be
app/vmselect/promql: add mad_over_time(m[d]) function 
See https://github.com/prometheus/prometheus/issues/5514
 2023-02-11 01:06:20 -08:00
Aliaksandr Valialkin
7440f971ab
docs/MetricsQL.md: add links to "rollup results" explanation 2023-02-03 11:09:42 -08:00
Aliaksandr Valialkin
04dff34de4
vendor: update github.com/VictoriaMetrics/metricsql from v0.50.0 to v0.51.0 
Updates https://github.com/VictoriaMetrics/metricsql/pull/7
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3589
 2023-01-05 01:50:10 -08:00
Aliaksandr Valialkin
38341802c2
app/vmselect: add /expand-with-exprs page 2022-12-14 16:18:55 -08:00
Aliaksandr Valialkin
5eae9a9914
app/vmselect/promql: add range_trim_spikes(phi, q) function for trimming phi percent of largest spikes per each time series returned by q 2022-12-05 21:55:01 -08:00
Aliaksandr Valialkin
399ed9a3b9
docs/MetricsQL.md: document that histogram_share() accepts optional boundsLabel arg 2022-11-24 17:27:30 -08:00
Aliaksandr Valialkin
d9c3a2b605
app/vmselect/promql: add range_normalize(q1, ..., qN) function for normalizing query results into [0..1] value range 
This may be useful for analyzing correlation between time series with different value ranges
 2022-11-21 23:25:00 +02:00
Aliaksandr Valialkin
05ed98c98b
app/vmselect/promql: allow using SI and IEC suffixes in numeric values inside queries 
For example, 10Ki is equivalent to 10*1024, while 5.3M is equivalent to 5.3*1000*1000
 2022-11-21 21:27:55 +02:00
Aliaksandr Valialkin
a260e2659e
app/vmselect/promql: add range_stdvar() and range_stddev() functions for calculating variance and deviation over time series on the selected time range 2022-11-17 01:03:40 +02:00
Aliaksandr Valialkin
c1a3192d8b
app/vmselect/promql: add range_linear_regression(q) function for calculating simple linear regression for the selected time series on the selected time range 2022-11-17 00:38:48 +02:00
Aliaksandr Valialkin
646fb17237
docs/MetricsQL.md: document that input histograms must have the same set of buckets when calculating the quantile over them 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3231
 2022-10-14 13:59:58 +03:00
Aliaksandr Valialkin
285e92706d
docs/MetricsQL.md: formatting improvements 
Also put a link to the function type in docs for every function.
This should simplify understanding of MetricsQL functions for novice users.
 2022-10-07 00:53:14 +03:00
Roman Khavronenko
36a9a834b3
docs: clarify numeric label values for label_value (#3129) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3114
Signed-off-by: hagen1778 <roman@victoriametrics.com>

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2022-09-26 16:48:38 +03:00
Dmytro Kozlov
b75f1854c5
vmselect/promql: add alphanumeric sort by label (sort_by_label_numeric) (#2982) 
* vmselect/promql: add alphanumeric sort by label (sort_by_label_numeric)

* vmselect/promql: fix tests, add documentation

* vmselect/promql: update test

* vmselect/promql: update for alphanumeric sorting, fix tests

* vmselect/promql: remove comments

* vmselect/promql: cleanup

* vmselect/promql: avoid memory allocations, update functions descriptions

* vmselect/promql: make linter happy (remove ineffectual assigment)

* vmselect/promql: add test case, fix behavior when strings are equal

* vendor: update github.com/VictoriaMetrics/metricsql from v0.44.1 to v0.45.0

this adds support for sort_by_label_numeric and sort_by_label_numeric_desc functions

* wip

* lib/promscrape: read response body into memory in stream parsing mode before parsing it

This reduces scrape duration for targets returning big responses.

The response body was already read into memory in stream parsing mode before this change,
so this commit shouldn't increase memory usage.

* wip

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2022-09-14 17:41:09 +03:00
John Belmonte
defced2599
MetricsQL doc spellcheck (#3080) 2022-09-08 21:28:03 +03:00
Dmytro Kozlov
2d71b4859c
vmselect/promql: fix panic in histogram_quantiles function (#3029) 
* vmselect/promql: fix panic in histogram_quantiles function

* Update docs/MetricsQL.md

Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>
 2022-08-27 01:33:56 +03:00
Aliaksandr Valialkin
e0e7c14788
docs/MetricsQL.md: add the list of supported ... functions lines just before the corresponding lists 
This improves the readability a bit
 2022-08-16 12:08:57 +03:00
Aliaksandr Valialkin
814bb1685f
all: fix other typos in the same way as 6f4d9b2a48 does 2022-07-18 12:08:15 +03:00
Roman Khavronenko
4b4f03fa1f
docs: reference links from key concepts (#2745) 
Signed-off-by: hagen1778 <roman@victoriametrics.com>

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
 2022-06-19 23:12:10 +03:00
Denis Fondras
928728807c
Fix typo (#2538) 2022-05-05 21:16:03 +03:00
Peter Dupej
8688ea8aa8
Update MetricsQL.md (#2519) 
remove typo from label_replace doc.
 2022-05-02 09:42:58 +03:00
Aliaksandr Valialkin
9bb35779d2
docs/MetricsQL.md: clarify keep_metric_names docs 2022-04-27 11:24:32 +03:00
Aliaksandr Valialkin
cce1b6d7f9
app/vmselect/promql: add tlast_change_over_time(m[d]) function, which returns the timestamp for the last change of m on the given lookbehind window d 2022-04-27 10:59:03 +03:00
Aliaksandr Valialkin
de892239a9
app/vmselect/promql: add drop_common_labels() function 2022-04-21 14:20:20 +03:00
Roman Khavronenko
cb878d50fc
docs: update increase_prometheus desc (#2381) 
Remove note that this func is supported by PromQL.
 2022-03-28 11:57:03 +03:00
Dima Lazerka
1fa0f3ec89
VMAnomaly docs fixes (#2361) 
* Added docs for vmanomaly

* Add example images

* Stylistic fixes

* Move images to root

* Update docs/vmanomaly.md

* Update docs/vmanomaly.md

Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>

* Squeeze vmanomaly after vmbackupmanager before Case Studies

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
Co-authored-by: Roman Khavronenko <roman@victoriametrics.com>
 2022-03-25 12:08:17 +02:00
Arash Hatami
a8de1ab000
A good change for MD files (#2353) 
* Lint YAML

* Remove extra comment

* Fix command problem

* Format MD files

* Format & fix problem of MD files for docs

* Another fix for MD files
 2022-03-22 13:40:55 +02:00
Aliaksandr Valialkin
1bdc71d917
app/vmselect/promql: implement keep_metric_names modifier for transform and rollup functions 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949
 2022-01-14 04:14:59 +02:00
Aliaksandr Valialkin
f41846d002
app/vmselect/promql: add stale_samples_over_time() function 2022-01-14 01:48:04 +02:00
Aliaksandr Valialkin
c883c15878
app/vmselect/promql: add support for @ modifier 
Add support for `@` modifier in MetricsQL according to https://prometheus.io/docs/prometheus/latest/querying/basics/#modifier

Extend the support with the following features:
* Allow using `@` modifier everywhere in the query. For example, `sum(foo) @ end()`
* Allow using arbitrary expression as `@` modifier. For example, `foo @ (end() - 1h)`
  returns `foo` value at `end - 1 hour` timestamp on the selected time range `[start ... end]`

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1348
 2022-01-13 22:12:06 +02:00
Aliaksandr Valialkin
974d9c0eee
app/vmselect/promql: follow-up after 177e345d8a 
* Document changes_prometheus(), increase_prometheus() and delta_prometheus() functions.
* Simplify their implementation
* Mention these functions in docs/CHANGELOG.md
 2021-12-20 13:19:44 +02:00
Roman Khavronenko
8b0d340c18
docs: update MetricsQL.Subquery section description (#1951) 
* simplify sentences;
* fix typo.

Signed-off-by: hagen1778 <roman@victoriametrics.com>
 2021-12-16 19:09:25 +03:00
Aliaksandr Valialkin
5efe377a26
app/vmselect/promql: add timestamp_with_name(m[d]) function 
This function works the same as `timestamp()`, but doesn't remove source time series names.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949#issuecomment-995222388
 2021-12-15 23:37:07 +02:00