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VictoriaMetrics/app/vmselect
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Aliaksandr Valialkin 7a9f0b32a2
app/vmselect/netstorage: prevent from disk write IO when closing temporary files 
Remove temporary file before closing it in order to signal the OS that it shouldn't
store the file contents from page cache to disk when the file is closed.

Gracefully handle the case when the file cannot be removed before being closed -
in this case remove the file after closing it. This allows working on Windows.

Also remove superflouos opening of temporary file for reading - re-use already opened file handle for writing.

This is a follow-up for 9b1e002287
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4020
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/70
2024-02-01 19:54:48 +02:00
..
clusternative app/{vmselect,vmstorage}: return compression of the data passed from vmstorage to vmselect 2024-01-24 13:37:05 +02:00
deployment Rootless docker images by default (#358) 2020-03-27 21:18:32 +02:00
graphite app/vmselect/graphite: properly handle -N index for the array of N items 2024-01-17 00:16:37 +02:00
graphiteql app,lib: fix typos in comments (#3804) 2023-02-13 09:32:35 -08:00
multiarch all: run apk update && apk upgrade in base Alpine Docker image in order to get all the recent security fixes 2023-02-09 14:03:02 -08:00
netstorage app/vmselect/netstorage: prevent from disk write IO when closing temporary files 2024-02-01 19:54:48 +02:00
prometheus lib/storage: do not check the limit for -search.maxUniqueTimeseries when performing /api/v1/labels and /api/v1/label/.../values requests 2024-01-29 16:44:46 +01:00
promql app/vmselect/promql: really keep metric names when keep_metric_names modifier is applied to binary operator 2024-01-31 02:33:06 +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 all: add support for or filters in series selectors 2023-07-15 23:56:18 -07:00
static/css app/vmselect: properly serve static css for /select/.../metric-relabel-debug page 2022-12-10 03:04:43 -08:00
vmui app/vmselect/vmui: run make vmui-update after 81b5db04f6 2024-01-30 21:13:14 +02:00
main.go vmsingle/vmselect returns http status 429 (TooManyRequests) instead of 503 (ServiceUnavailable) when max concurrent requests limit is reached. (#5682) 2024-01-25 10:21:09 +02:00
Makefile all: add Windows build for VictoriaMetrics 2023-03-19 23:28:26 -07:00
README.md app/vmselect: expose vmui at /vmselect/<accountID>/vmui/ instead of /vmselect/<accountID>/prometheus/vmui/ 2021-07-10 12:32:21 +03:00
vmui.go app/vmselect: add missing whitespace into the description for -vmui.defaultTimezone command-line flag 2024-02-01 14:49:48 +02:00

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/.