Aliaksandr Valialkin
bc7cf4950b
lib/promscrape: use the standard net/http.Client instead of fasthttp.Client for scraping targets in non-streaming mode
...
While fasthttp.Client uses less CPU and RAM when scraping targets with small responses (up to 10K metrics),
it doesn't work well when scraping targets with big responses such as kube-state-metrics.
In this case it could use big amounts of additional memory comparing to net/http.Client,
since fasthttp.Client reads the full response in memory and then tries re-using the large buffer
for further scrapes.
Additionally, fasthttp.Client-based scraping had various issues with proxying, redirects
and scrape timeouts like the following ones:
- https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1945
- https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5425
- https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2794
- https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1017
This should help reducing memory usage for the case when target returns big response
and this response is scraped by fasthttp.Client at first before switching to stream parsing mode
for subsequent scrapes. Now the switch to stream parsing mode is performed on the first scrape
after reading the response body in memory and noticing that its size exceeds the value passed
to -promscrape.minResponseSizeForStreamParse command-line flag.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5567
Overrides https://github.com/VictoriaMetrics/VictoriaMetrics/pull/4931
2024-01-30 18:39:10 +02:00
Aliaksandr Valialkin
c2373a8109
lib/promscrape: fix BenchmarkScrapeWorkScrapeInternal, which has been broken by the commit 65bc460323
2024-01-30 16:06:06 +02:00
Aliaksandr Valialkin
654e94f420
lib/promscrape: add exported_ prefix to metric names exported by scrape targets if they clash with automatically generated metrics
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3406
2022-11-28 18:37:09 -08:00
Aliaksandr Valialkin
46d7792b72
lib/promscrape: follow-up after 2c553d5a2f
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- fix broken tests
- cosmetic code cleanup
- document the change at https://docs.victoriametrics.com/vmagent.html#multitenancy
- document the change at https://docs.victoriametrics.com/CHANGELOG.html
2022-08-08 14:46:26 +03:00
Aliaksandr Valialkin
d826352688
app/vmagent: follow-up after fe445f753b
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1491
2021-08-05 09:52:32 +03:00
Omar Ghader
46e27d60a6
feature: Add multitenant for vmagent ( #1505 )
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* feature: Add multitenant for vmagent
* Minor fix
* Fix rcs index out of range
* Minor fix
* Fix multi Init
* Fix multi Init
* Fix multi Init
* Add default multi
* Adjust naming
* Add TenantInserted metrics
* Add TenantInserted metrics
* fix: remove unused metrics for vmagent
* fix: remove unused metrics for vmagent
Co-authored-by: mghader <marc.ghader@ubisoft.com>
Co-authored-by: Sebastian YEPES <syepes@gmail.com>
2021-08-05 09:52:31 +03:00
Aliaksandr Valialkin
2dfa746c91
lib/promscrape: remove ID field from ScrapeWork struct. Use a pointer to ScrapeWork as a key in targetStatusMap
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This simplifies the code a bit.
2020-12-17 14:32:56 +02:00
Aliaksandr Valialkin
455bf50a91
lib/promscrape: show real timestamp and real duration for the scape on /targets page
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Previously the scrape duration may be negative when calculated scrape timestamp drifts away from the real scrape timestamp
2020-08-10 12:40:25 +03:00
Aliaksandr Valialkin
d5dddb0953
all: use %w instead of %s for wrapping errors in fmt.Errorf
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This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
04762344c6
app/vmagent: initial implementation for vmagent
2020-02-23 13:36:03 +02:00
