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VictoriaMetrics/app/vmselect
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Aliaksandr Valialkin 0580a58feb
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 22:15:19 +02:00
..
bufferedwriter app/vmselect: stop /api/v1/export/* execution if client disconnects 2020-09-27 23:52:42 +03:00
deployment Rootless docker images by default (#358) 2020-03-27 21:18:32 +02:00
graphite app/vmselect: accept optional extra_filters[] query args for all the supported Prometheus querying APIs 2021-12-06 17:33:49 +02:00
graphiteql Graphite vmalert wip (#112) 2021-02-01 15:28:30 +02:00
multiarch deployment/docker: embed tzdata into prod Go app instead of installing it into base docker image 2021-02-12 04:56:27 +02:00
netstorage lib/storage: return dedup interval in milliseconds from GetDedupInterval() 2021-12-15 13:27:27 +02:00
prometheus app/vmselect/prometheus: typo fix after bf0e3ad2171219b7883b149999c4dc0ac15b9797 2021-12-17 11:52:42 +02:00
promql app/vmselect/promql: add support for @ modifier 2022-01-13 22:15:19 +02:00
querystats app/vmselect: do not track queries with less than 1ms execution time at /api/v1/status/top_queries 2021-07-15 16:53:35 +03:00
searchutils app/vmselect: accept optional extra_filters[] query args for all the supported Prometheus querying APIs 2021-12-06 17:33:49 +02:00
vmui vmui: switching to Preact (#2053) 2022-01-11 10:34:01 +02:00
main.go vmselect: update /query_exemplars placeholder (#2000) 2021-12-23 12:08:40 +02:00
Makefile app/{vminsert,vmselect}: automatically add missing port in -storageNode lists passed to vminsert and vmselect 2021-09-15 18:04:30 +03:00
README.md app/vmselect: expose vmui at /vmselect/<accountID>/vmui/ instead of /vmselect/<accountID>/prometheus/vmui/ 2021-07-10 12:32:21 +03:00

README.md

vmselect performs the following tasks:

  • Splits incoming selects to tasks for vmstorage nodes and issues these tasks to all the vmstorage nodes in the cluster.

  • Merges responses from all the vmstorage nodes and returns a single response.

The vmui directory contains static contents built from app/vmui package with make vmui-update command. The vmui page is available at http://<vmselect>:8481/select/<accountID>/vmui/.