Job:
#OCPBUGS-30267issue2 weeks ago[IBMCloud] MonitorTests liveness/readiness probe error events repeat MODIFIED
Mar 12 18:52:24.937 - 58s E namespace/openshift-kube-apiserver alert/KubeAPIErrorBudgetBurn alertstate/firing severity/critical ALERTS
{alertname="KubeAPIErrorBudgetBurn", alertstate="firing", long="1h", namespace="openshift-kube-apiserver", prometheus="openshift-monitoring/k8s", severity="critical", short="5m"}
#OCPBUGS-15430issue3 weeks agoKubeAPIDown alert rename and/or degraded status ASSIGNED
We have many guards making sure that there are always at least two instances of the kube-apiserver. If we ever reach a single kube-apiserver and it causes disruption for the clients, other alerts such as KubeAPIErrorBudgetBurn will fire.
KubeAPIDown is here to make sure that Prometheus and really any client can reach the kube-apiserver, which they can even when there is only one instance of kube-apiserver running. If they can't or that availability is disrupted, `KubeAPIErrorBudgetBurn` will fire.
Comment 23058588 by Marcel Härri at 2023-09-19T06:57:07.949+0000
periodic-ci-openshift-release-master-nightly-4.10-upgrade-from-stable-4.9-e2e-aws-upgrade (all) - 1 runs, 0% failed, 100% of runs match
#1777616400496463872junit9 days ago
# [bz-kube-apiserver][invariant] alert/KubeAPIErrorBudgetBurn should not be at or above pending
KubeAPIErrorBudgetBurn was at or above pending for at least 59s on platformidentification.JobType{Release:"4.10", FromRelease:"4.9", Platform:"aws", Network:"sdn", Topology:"ha"} (maxAllowed=3s): pending for 59s, firing for 0s:
Apr 09 10:33:05.019 - 59s   I alert/KubeAPIErrorBudgetBurn ns/openshift-kube-apiserver ALERTS{alertname="KubeAPIErrorBudgetBurn", alertstate="pending", long="3d", namespace="openshift-kube-apiserver", prometheus="openshift-monitoring/k8s", severity="warning", short="6h"}
#1777616400496463872junit9 days ago
# [sig-arch][bz-kube-apiserver][Late] Alerts alert/KubeAPIErrorBudgetBurn should not be at or above pending [Suite:openshift/conformance/parallel]
flake: KubeAPIErrorBudgetBurn was at or above pending for at least 8m50s on platformidentification.JobType{Release:"4.10", FromRelease:"4.9", Platform:"aws", Network:"sdn", Topology:"ha"} (maxAllowed=3s): pending for 8m50s, firing for 0s:
Apr 09 10:34:14.000 - 530s  I alert/KubeAPIErrorBudgetBurn ns/openshift-kube-apiserver ALERTS{alertname="KubeAPIErrorBudgetBurn", alertstate="pending", long="3d", namespace="openshift-kube-apiserver", prometheus="openshift-monitoring/k8s", severity="warning", short="6h"}

Found in 100.00% of runs (+Inf% of failures) across 1 total runs and 1 jobs (0.00% failed) in 91ms - clear search | chart view - source code located on github