# helm_charts_kubernetes-system.yaml
{{- /*
Generated from 'kubernetes-system' group from https://raw.githubusercontent.com/coreos/kube-prometheus/release-0.1/manifests/prometheus-rules.yaml
Do not change in-place! In order to change this file first read following link:
https://github.com/helm/charts/tree/master/stable/prometheus-operator/hack
*/ -}}
{{- $kubeTargetVersion := default .Capabilities.KubeVersion.GitVersion .Values.kubeTargetVersionOverride }}
{{- if and (semverCompare ">=1.10.0-0" $kubeTargetVersion) (semverCompare "<1.14.0-0" $kubeTargetVersion) .Values.defaultRules.create .Values.defaultRules.rules.kubernetesSystem }}
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: {{ printf "%s-%s" (include "prometheus-operator.fullname" .) "kubernetes-system" | trunc 63 | trimSuffix "-" }}
  namespace: {{ template "prometheus-operator.namespace" . }}
  labels:
    app: {{ template "prometheus-operator.name" . }}
{{ include "prometheus-operator.labels" . | indent 4 }}
{{- if .Values.defaultRules.labels }}
{{ toYaml .Values.defaultRules.labels | indent 4 }}
{{- end }}
{{- if .Values.defaultRules.annotations }}
  annotations:
{{ toYaml .Values.defaultRules.annotations | indent 4 }}
{{- end }}
spec:
  groups:
  - name: kubernetes-system
    rules:
    - alert: KubeNodeNotReady
      annotations:
        message: '{{`{{`}} $labels.node {{`}}`}} has been unready for more than an hour.'
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubenodenotready
      expr: kube_node_status_condition{job="kube-state-metrics",condition="Ready",status="true"} == 0
      for: 1h
      labels:
        severity: warning
    - alert: KubeVersionMismatch
      annotations:
        message: There are {{`{{`}} $value {{`}}`}} different semantic versions of Kubernetes components running.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeversionmismatch
      expr: count(count by (gitVersion) (label_replace(kubernetes_build_info{job!~"kube-dns|coredns"},"gitVersion","$1","gitVersion","(v[0-9]*.[0-9]*.[0-9]*).*"))) > 1
      for: 1h
      labels:
        severity: warning
    - alert: KubeClientErrors
      annotations:
        message: Kubernetes API server client '{{`{{`}} $labels.job {{`}}`}}/{{`{{`}} $labels.instance {{`}}`}}' is experiencing {{`{{`}} printf "%0.0f" $value {{`}}`}}% errors.'
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeclienterrors
      expr: |-
        (sum(rate(rest_client_requests_total{code=~"5.."}[5m])) by (instance, job)
          /
        sum(rate(rest_client_requests_total[5m])) by (instance, job))
        * 100 > 1
      for: 15m
      labels:
        severity: warning
    - alert: KubeClientErrors
      annotations:
        message: Kubernetes API server client '{{`{{`}} $labels.job {{`}}`}}/{{`{{`}} $labels.instance {{`}}`}}' is experiencing {{`{{`}} printf "%0.0f" $value {{`}}`}} errors / second.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeclienterrors
      expr: sum(rate(ksm_scrape_error_total{job="kube-state-metrics"}[5m])) by (instance, job) > 0.1
      for: 15m
      labels:
        severity: warning
    - alert: KubeletTooManyPods
      annotations:
        message: Kubelet {{`{{`}} $labels.instance {{`}}`}} is running {{`{{`}} $value {{`}}`}} Pods, close to the limit of 110.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubelettoomanypods
      expr: kubelet_running_pod_count{job="kubelet"} > 110 * 0.9
      for: 15m
      labels:
        severity: warning
    - alert: KubeAPILatencyHigh
      annotations:
        message: The API server has a 99th percentile latency of {{`{{`}} $value {{`}}`}} seconds for {{`{{`}} $labels.verb {{`}}`}} {{`{{`}} $labels.resource {{`}}`}}.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapilatencyhigh
      expr: cluster_quantile:apiserver_request_latencies:histogram_quantile{job="apiserver",quantile="0.99",subresource!="log",verb!~"^(?:LIST|WATCH|WATCHLIST|PROXY|CONNECT)$"} > 1
      for: 10m
      labels:
        severity: warning
    - alert: KubeAPILatencyHigh
      annotations:
        message: The API server has a 99th percentile latency of {{`{{`}} $value {{`}}`}} seconds for {{`{{`}} $labels.verb {{`}}`}} {{`{{`}} $labels.resource {{`}}`}}.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapilatencyhigh
      expr: cluster_quantile:apiserver_request_latencies:histogram_quantile{job="apiserver",quantile="0.99",subresource!="log",verb!~"^(?:LIST|WATCH|WATCHLIST|PROXY|CONNECT)$"} > 4
      for: 10m
      labels:
        severity: critical
    - alert: KubeAPIErrorsHigh
      annotations:
        message: API server is returning errors for {{`{{`}} $value {{`}}`}}% of requests.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapierrorshigh
      expr: |-
        sum(rate(apiserver_request_count{job="apiserver",code=~"^(?:5..)$"}[5m]))
          /
        sum(rate(apiserver_request_count{job="apiserver"}[5m])) * 100 > 3
      for: 10m
      labels:
        severity: critical
    - alert: KubeAPIErrorsHigh
      annotations:
        message: API server is returning errors for {{`{{`}} $value {{`}}`}}% of requests.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapierrorshigh
      expr: |-
        sum(rate(apiserver_request_count{job="apiserver",code=~"^(?:5..)$"}[5m]))
          /
        sum(rate(apiserver_request_count{job="apiserver"}[5m])) * 100 > 1
      for: 10m
      labels:
        severity: warning
    - alert: KubeAPIErrorsHigh
      annotations:
        message: API server is returning errors for {{`{{`}} $value {{`}}`}}% of requests for {{`{{`}} $labels.verb {{`}}`}} {{`{{`}} $labels.resource {{`}}`}} {{`{{`}} $labels.subresource {{`}}`}}.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapierrorshigh
      expr: |-
        sum(rate(apiserver_request_count{job="apiserver",code=~"^(?:5..)$"}[5m])) by (resource,subresource,verb)
          /
        sum(rate(apiserver_request_count{job="apiserver"}[5m])) by (resource,subresource,verb) * 100 > 10
      for: 10m
      labels:
        severity: critical
    - alert: KubeAPIErrorsHigh
      annotations:
        message: API server is returning errors for {{`{{`}} $value {{`}}`}}% of requests for {{`{{`}} $labels.verb {{`}}`}} {{`{{`}} $labels.resource {{`}}`}} {{`{{`}} $labels.subresource {{`}}`}}.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeapierrorshigh
      expr: |-
        sum(rate(apiserver_request_count{job="apiserver",code=~"^(?:5..)$"}[5m])) by (resource,subresource,verb)
          /
        sum(rate(apiserver_request_count{job="apiserver"}[5m])) by (resource,subresource,verb) * 100 > 5
      for: 10m
      labels:
        severity: warning
    - alert: KubeClientCertificateExpiration
      annotations:
        message: A client certificate used to authenticate to the apiserver is expiring in less than 7.0 days.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeclientcertificateexpiration
      expr: apiserver_client_certificate_expiration_seconds_count{job="apiserver"} > 0 and histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job="apiserver"}[5m]))) < 604800
      labels:
        severity: warning
    - alert: KubeClientCertificateExpiration
      annotations:
        message: A client certificate used to authenticate to the apiserver is expiring in less than 24.0 hours.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubeclientcertificateexpiration
      expr: apiserver_client_certificate_expiration_seconds_count{job="apiserver"} > 0 and histogram_quantile(0.01, sum by (job, le) (rate(apiserver_client_certificate_expiration_seconds_bucket{job="apiserver"}[5m]))) < 86400
      labels:
        severity: critical
{{- end }}