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27 commits

Author SHA1 Message Date
Aliaksandr Valialkin
3bb9bf33d6 lib/promscrape: reduce memory allocations when unpacking gzipped responses received from scrape targets 2020-11-26 18:32:16 +02:00
Aliaksandr Valialkin
3dd2282ed9 lib/promscrape: release http response non-200 status code 2020-11-26 13:25:25 +02:00
Aliaksandr Valialkin
3ed9f1d5a9 lib/promscrape: properly handle response body after 301 redirect 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/869
 2020-11-02 01:09:59 +02:00
Nikolay
e8fe618bbb fixes panic at scrape error body formating, (#868) 
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/864
regression after body reuse improvements
 2020-11-01 23:25:23 +02:00
Aliaksandr Valialkin
ed724d25ba lib/promscrape: add stream parse mode for efficient scraping of targets that expose millions of metrics 2020-11-01 23:12:26 +02:00
Aliaksandr Valialkin
8fd791d399 lib/promscrape: avoid copying response body when scraping targets. 
This should reduce memory usage when scraping targets with millions of metrics.
 2020-09-18 13:06:00 +03:00
Aliaksandr Valialkin
6aab2f4989 all: allow using KB, MB, GB, KiB, MiB and GiB suffixes in command-line flag values related to byte sizes or byte rates 2020-08-16 17:08:28 +03:00
Aliaksandr Valialkin
1724cc241e lib/promscrape: properly retry requests on the server closed connection before returning the first response byte error during service discover API calls and target scrapes 2020-08-13 22:32:29 +03:00
Aliaksandr Valialkin
87f8c728bf lib/promscrape: send Accept header similar to Prometheus when scraping targets 
This should fix scraping Spring Boot servers, which return incorrect response
unless `Accept: text/plain` request header is set.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/608
 2020-07-08 19:50:06 +03:00
Aliaksandr Valialkin
6f1d926698 lib/promscrape: use HostClient.DoDeadline instead of HostClient.Do in order to guarantee strict deadline across multiple scrape attempts 2020-07-03 21:33:48 +03:00
Aliaksandr Valialkin
ee03b4ccbd lib/promscrape: prevent from too big deadline misses on scrape retries 
The maximum deadline miss duration is reduced to 2x scrape_interval in the worst case.
By default it is limited to scrape_interval configured for the given scrape target.
 2020-07-03 20:42:09 +03:00
Aliaksandr Valialkin
dfa83a4a35 lib/promscrape: check for nil error before checking for the returned status code when scraping targets 2020-07-03 18:37:25 +03:00
Aliaksandr Valialkin
2361ad8ab4 lib/promscrape: add ability to set disable_compression and disable_keepalive options in scrape_config section of the config passed to -promscrape.config 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-07-02 14:19:34 +03:00
Aliaksandr Valialkin
0f754bea49 lib/promscrape: add -promscrape.disableKeepAlive command-line flag for disabling http keep-alive connections when scraping targets 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-07-01 02:20:46 +03:00
Aliaksandr Valialkin
d962568e93 all: use %w instead of %s for wrapping errors in fmt.Errorf 
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
 2020-06-30 23:33:46 +03:00
Aliaksandr Valialkin
a80e852aab lib/promscrape: retry performing the request to the server for up to 3 times before giving up when it closes keep-alive connections 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/580
 2020-06-23 12:34:12 +03:00
Aliaksandr Valialkin
b747362936 lib/promscrape: mention about -promscrape.maxScrapeSize in the error message when target returns too big response 2020-05-24 14:41:24 +03:00
Aliaksandr Valialkin
405cf44aed app/vmagent,lib/promscrape: do not set HostClient.DialDualStack, since it isnt used if HostClient.Dial is set 2020-05-12 15:24:53 +03:00
Aliaksandr Valialkin
b6d88bac04 vendor: use github.com/VictoriaMetrics/fasthttp instead of github.com/fasthttp/fasthttp 
The upstream fasthttp may contain issues like 996610f021 ,
plus a code that isn't used by VictoriaMetrics. So let's use a private copy under our control instead.
 2020-04-29 16:43:09 +03:00
Aliaksandr Valialkin
53740d0026 lib/promscrape: handle connection reset when targets responds with http redirect 2020-04-28 02:14:32 +03:00
肖贝贝
3e6f29f462 fix: vmagent not follow 301/302 redirect bug (#445) 
Co-authored-by: xiaobeibei <xiaobeibei@bigo.sg>
 2020-04-28 02:14:31 +03:00
Aliaksandr Valialkin
424068f804 lib/promscrape: handle connection reset when targets responds with http redirect 2020-04-28 02:14:26 +03:00
肖贝贝
7d045bf2ca fix: vmagent not follow 301/302 redirect bug (#445) 
Co-authored-by: xiaobeibei <xiaobeibei@bigo.sg>
 2020-04-28 02:14:25 +03:00
Aliaksandr Valialkin
266bbec52d lib/promscrape: retry target scraping when the target closes previously established keep-alive connection to it 
This should fix the following error:

the server closed connection before returning the first response byte. Make sure the server returns 'Connection: close' response header before closing the connection
 2020-04-16 23:25:34 +03:00
Aliaksandr Valialkin
7fbfef2aee lib/promscrape: extract common auth code to lib/promauth 2020-04-13 12:59:22 +03:00
Aliaksandr Valialkin
d39dd8aa69 lib/promscrape: do not retry idempotent requests when scraping targets 
This should prevent from the following unexpected side-effects of idempotent request retries:
- increased actual timeout when scraping the target comparing to the configured scrape_timeout
- increased load on the target

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/357
 2020-03-09 13:31:20 +02:00
Aliaksandr Valialkin
7ee7614e90 app/vmagent: initial implementation for vmagent 2020-02-23 17:31:54 +02:00