fix(mixin): ThanosSidecarUnhealthy doesn't fire if the sidecar is never healthy #4342
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arajkumar
changed the title
for clause in ThanosSidecarUnhealthy alert…er healthy Signed-off-by: Arunprasad Rajkumar <arajkuma@redhat.com>
onprem
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Jun 23, 2021
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This PR reverts #3204 as it makes
ThanosSidecarUnhealthyalert non functional by consideringthanos_sidecar_last_heartbeat_success_time_secondsmetric's timestamp instead of it's actual value for alerting.timestamp(..)function is associated with each scrape and regardless of the metric's value it's timestamp would be updated.Consider the following scenario for
thanos_sidecar_last_heartbeat_success_time_secondswhere the heat-beat completed only once.When applying
timestamp(thanos_sidecar_last_heartbeat_success_time_seconds)on the above series values, it will always give us time at which scarp completed for this metrics.In addition to above change, added a
forclause inThanosSidecarUnhealthyalert to improve it's usability, otherwise it would trigger immediately during sidecar boot-up.Fixes #3990