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| 1 | +# Alerts |
| 2 | +## KubeCPUOvercommit |
| 3 | +Cluster has overcommitted CPU resource requests for Pods and cannot tolerate node failure. |
| 4 | + |
| 5 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubecpuovercommit) |
| 6 | + |
| 7 | +## KubeMemOvercommit |
| 8 | +Cluster has overcommitted memory resource requests for Pods and cannot tolerate node failure. |
| 9 | + |
| 10 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubememovercommit) |
| 11 | + |
| 12 | +## KubeCPUOvercommit |
| 13 | +Cluster has overcommitted CPU resource requests for Namespaces. |
| 14 | + |
| 15 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubecpuovercommit) |
| 16 | + |
| 17 | +## KubeMemOvercommit |
| 18 | +Cluster has overcommitted memory resource requests for Namespaces. |
| 19 | + |
| 20 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubememovercommit) |
| 21 | + |
| 22 | +## KubeQuotaExceeded |
| 23 | +Namespace exceeded its quota. |
| 24 | + |
| 25 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubequotaexceeded) |
| 26 | + |
| 27 | +## CPUThrottlingHigh |
| 28 | +Throttling of CPU in namespace for container in pod. |
| 29 | + |
| 30 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-cputhrottlinghigh) |
| 31 | + |
| 32 | +## KubePersistentVolumeUsageCritical |
| 33 | +The PersistentVolume claimed in Namespace usage is critical. |
| 34 | + |
| 35 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubepersistentvolumeusagecritical) |
| 36 | + |
| 37 | +## KubePersistentVolumeFullInFourDays |
| 38 | +Based on recent sampling, the PersistentVolume claimed in the Namespace is expected to fill up within four days |
| 39 | + |
| 40 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubepersistentvolumefullinfourdays) |
| 41 | + |
| 42 | +## KubePersistentVolumeErrors |
| 43 | +The persistent volume has bad status. |
| 44 | + |
| 45 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubepersistentvolumeerrors) |
| 46 | + |
| 47 | +## KubeVersionMismatch |
| 48 | +There are different semantic versions of Kubernetes components running. |
| 49 | + |
| 50 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeversionmismatch) |
| 51 | + |
| 52 | +## KubeClientErrors |
| 53 | +Kubernetes API server client is experiencing errors.' |
| 54 | + |
| 55 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeclienterrors) |
| 56 | + |
| 57 | +## ErrorBudgetBurn |
| 58 | +High requests error budget burn for job=kube-apiserver |
| 59 | + |
| 60 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-errorbudgetburn) |
| 61 | + |
| 62 | +## ErrorBudgetBurn |
| 63 | +High requests error budget burn for job=kube-apiserver |
| 64 | + |
| 65 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-errorbudgetburn) |
| 66 | + |
| 67 | +## KubeAPILatencyHigh |
| 68 | +The API server has an abnormal latency. |
| 69 | + |
| 70 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeapilatencyhigh) |
| 71 | + |
| 72 | +## KubeAPILatencyHigh |
| 73 | +The API server has a 99th percentile latency. |
| 74 | + |
| 75 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeapilatencyhigh) |
| 76 | + |
| 77 | +## KubeAPIErrorsHigh |
| 78 | +API server is returning high number errors. |
| 79 | + |
| 80 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeapierrorshigh) |
| 81 | + |
| 82 | +## KubeClientCertificateExpiration |
| 83 | +A client certificate used to authenticate to the apiserver is expiring in less than 7.0 days. |
| 84 | + |
| 85 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeclientcertificateexpiration) |
| 86 | + |
| 87 | +## KubeClientCertificateExpiration |
| 88 | +A client certificate used to authenticate to the apiserver is expiring in less than 24.0 hours. |
| 89 | + |
| 90 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeclientcertificateexpiration) |
| 91 | + |
| 92 | +## AggregatedAPIErrors |
| 93 | +An aggregated API has reported errors. The number of errors have increased for it in the past five minutes. High values indicate that the availability of the service changes too often. |
| 94 | + |
| 95 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-aggregatedapierrors) |
| 96 | + |
| 97 | +## AggregatedAPIDown |
| 98 | +An aggregated API is down. It has not been available at least for the past five minutes. |
| 99 | + |
| 100 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-aggregatedapidown) |
| 101 | + |
| 102 | +## KubeAPIDown |
| 103 | +KubeAPI has disappeared from Prometheus target discovery. |
| 104 | + |
| 105 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeapidown) |
| 106 | + |
| 107 | +## KubeNodeNotReady |
| 108 | +One node has been unready for more than 15 minutes. |
| 109 | + |
| 110 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubenodenotready) |
| 111 | + |
| 112 | +## KubeNodeUnreachable |
| 113 | +One node is unreachable and some workloads may be rescheduled. |
| 114 | + |
| 115 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubenodeunreachable) |
| 116 | + |
| 117 | +## KubeletTooManyPods |
| 118 | +Kubelet is running out of its Pod capacity. |
| 119 | + |
| 120 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubelettoomanypods) |
| 121 | + |
| 122 | +## KubeNodeReadinessFlapping |
| 123 | +The readiness status of node has changed the value several times in the last 15 minutes. |
| 124 | + |
| 125 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubenodereadinessflapping) |
| 126 | + |
| 127 | +## KubeletPlegDurationHigh |
| 128 | +The Kubelet Pod Lifecycle Event Generator has a 99th percentile duration of {{ $value }} seconds on node {{ $labels.node }}. |
| 129 | + |
| 130 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeletplegdurationhigh) |
| 131 | + |
| 132 | +## KubeletPodStartUpLatencyHigh |
| 133 | +Kubelet Pod startup 99th percentile latency is high. |
| 134 | + |
| 135 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeletpodstartuplatencyhigh) |
| 136 | + |
| 137 | +## KubeletDown |
| 138 | +Kubelet has disappeared from Prometheus target discovery. |
| 139 | + |
| 140 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeletdown) |
| 141 | + |
| 142 | +## KubeSchedulerDown |
| 143 | +KubeScheduler has disappeared from Prometheus target discovery. |
| 144 | + |
| 145 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeschedulerdown) |
| 146 | + |
| 147 | +## KubeControllerManagerDown |
| 148 | +KubeControllerManager has disappeared from Prometheus target discovery. |
| 149 | + |
| 150 | +[Runbook](https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubecontrollermanagerdown) |
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