VictoriaMetrics/lib/promscrape/discoveryutils
Zakhar Bessarab b3b29ba6ac
lib/{promauth,promscrape}: automatically refresh root CA certificates after changes on disk (#5725)
* lib/{promauth,promscrape}: automatically refresh root CA certificates after changes on disk

Added a custom `http.RoundTripper` implementation which checks for root CA content changes and updates `tls.Config` used by `http.RoundTripper` after detecting CA change.

Client certificate changes are not tracked by this implementation since `tls.Config` already supports passing certificate dynamically by overriding `tls.Config.GetClientCertificate`.

This change implements dynamic reload of root CA only for streaming client used for scraping. Blocking client (`fasthttp.HostClient`) does not support using custom transport so can't use this implementation.

See: https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5526

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

* lib/promauth/config: update NewRoundTripper API

Update API to allow user to update only parameters required for transport.

Add warning log when reloading Root CA failed.

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

* lib/promauth/config: fix mutex acquire logic

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

* lib/promauth/config: replace RWMutex with regular mutex to simplify the code

- remove additional mutex used for getRootCABytes - require callee to use mutex
- replace RWMutex with regular mutex

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

* lib/promauth/config: refactor

- hold the mutex lock to avoid round tripper being re-created twice
- move recreation logic into separate func to simplify the code

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

---------

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
Co-authored-by: Nikolay <nik@victoriametrics.com>
2024-04-03 10:01:43 +02:00
..
client_test.go lib/promscrape: disable support for service discovery and metrics scrape via http2 2023-07-06 16:03:37 -07:00
client.go lib/{promauth,promscrape}: automatically refresh root CA certificates after changes on disk (#5725) 2024-04-03 10:01:43 +02:00
config_map.go lib/promscrape: explicitly stop and cleanup service discovery routines when new config is read from -promscrape.config 2021-03-01 14:14:00 +02:00
utils_test.go Makefile: update golangci-lint from v1.51.2 to v1.54.2 2023-09-01 10:16:42 +02:00
utils_timing_test.go lib/promscrape: optimize discoveryutils.SanitizeLabelName() 2022-08-27 00:17:45 +03:00
utils.go added new consulagent service discovery (#3953) (#4217) 2023-05-04 11:36:21 +02:00