VictoriaMetrics/lib/promscrape/discovery/kubernetes
Hui Wang 52d0e776ed
lib/promscrape/discovery/kubernetes: fix watcher start order for roles endpoints and endpointslice (#5557)
* lib/promscrape/discovery/kubernetes: fix watcher start order for roles endpoints and endpointslice

Previously the groupWatcher could be mistakenly stopped when requests for pod or services resources take too long.

* remove mislead comment

* docs/sd_configs.md: mention -promscrape.kubernetes.attachNodeMetadataAll flag in the description for attach_metadata section

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4640

* wip

* lib/promscrape/kubernetes: prevent from stopping groupWatcher when there are in-flight apiWatcher.mustStart() calls

groupWatcher is stopped if it has zero registered apiWatchers during 14 seconds.
But such a groupWatcher can be still in use if apiWatcher for `role: endpoints` or `role: endpointslice`
is being registered and the discovery of the associated `pod` and/or `service` objects takes longer
than 14 seconds - see the beginning of groupWatcher.startWatchersForRole() function for details.

Track the number of in-flight calls to apiWatcher.mustStart() and prevent from stopping the associated groupWatcher
if the number of in-flight calls is non-zero.

P.S. postponing the discovery of `pod` and/or `service` objects associated with `endpoints` or `endpointslice` roles
isn't the best solution, since it slows down initial discovery of `endpoints` and `endpointslice` targets.

* typo fix

---------

Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2024-01-22 01:35:51 +02:00
..
testdata lib/promscrape/discovery/kubernetes: follow-up after 0b5c874911 (#2672) 2022-06-04 01:11:23 +03:00
api.go lib/promauth: refactor NewConfig in order to improve maintainability 2022-07-04 14:31:43 +03:00
api_watcher.go lib/promscrape/discovery/kubernetes: fix watcher start order for roles endpoints and endpointslice (#5557) 2024-01-22 01:35:51 +02:00
api_watcher_test.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
common_types.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
endpoints.go Add endpoint labels for pod targets discovered form endpoint but has different ports (#4253) 2023-05-09 21:25:56 -07:00
endpoints_test.go lib/promscrape/discovery/kubernetes: follow-up for d5e94721db (#4255) 2023-05-09 21:29:27 -07:00
endpointslice.go Add endpoint labels for pod targets discovered form endpoint but has different ports (#4253) 2023-05-09 21:25:56 -07:00
endpointslice_test.go lib/promscrape/discovery/kubernetes: follow-up for d5e94721db (#4255) 2023-05-09 21:29:27 -07:00
ingress.go Makefile: update golangci-lint from v1.51.2 to v1.54.2 2023-09-01 11:15:51 +02:00
ingress_test.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
kubeconfig.go lib/promauth: properly parse string contents for ca, cert and key fields at tls_config 2023-10-27 14:23:15 +02:00
kubeconfig_test.go lib/promauth: properly parse string contents for ca, cert and key fields at tls_config 2023-10-27 14:23:15 +02:00
kubernetes.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
node.go Makefile: update golangci-lint from v1.51.2 to v1.54.2 2023-09-01 11:15:51 +02:00
node_test.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
pod.go lib/promscrape/discovery/kubernetes: follow-up for d5e94721db (#4255) 2023-05-09 21:29:27 -07:00
pod_test.go lib/promscrape/discovery/kubernetes: add support for __meta_kubernetes_pod_container_id 2023-01-27 16:33:57 -08:00
pod_timing_test.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00
service.go Makefile: update golangci-lint from v1.51.2 to v1.54.2 2023-09-01 11:15:51 +02:00
service_test.go lib/promscrape: optimize service discovery speed 2022-11-29 21:26:23 -08:00