{{- /*
Generated from 'kubernetes-resources' 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.kubernetesResources }}
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: {{ printf "%s-%s" (include "prometheus-operator.fullname" .) "kubernetes-resources" | 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-resources
    rules:
    - alert: KubeCPUOvercommit
      annotations:
        message: Cluster has overcommitted CPU resource requests for Pods and cannot tolerate node failure.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubecpuovercommit
      expr: |-
        sum(namespace_name:kube_pod_container_resource_requests_cpu_cores:sum)
          /
        sum(node:node_num_cpu:sum)
          >
        (count(node:node_num_cpu:sum)-1) / count(node:node_num_cpu:sum)
      for: 5m
      labels:
        severity: warning
    - alert: KubeMemOvercommit
      annotations:
        message: Cluster has overcommitted memory resource requests for Pods and cannot tolerate node failure.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubememovercommit
      expr: |-
        sum(namespace_name:kube_pod_container_resource_requests_memory_bytes:sum)
          /
        sum(node_memory_MemTotal_bytes)
          >
        (count(node:node_num_cpu:sum)-1)
          /
        count(node:node_num_cpu:sum)
      for: 5m
      labels:
        severity: warning
    - alert: KubeCPUOvercommit
      annotations:
        message: Cluster has overcommitted CPU resource requests for Namespaces.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubecpuovercommit
      expr: |-
        sum(kube_resourcequota{job="kube-state-metrics", type="hard", resource="cpu"})
          /
        sum(node:node_num_cpu:sum)
          > 1.5
      for: 5m
      labels:
        severity: warning
    - alert: KubeMemOvercommit
      annotations:
        message: Cluster has overcommitted memory resource requests for Namespaces.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubememovercommit
      expr: |-
        sum(kube_resourcequota{job="kube-state-metrics", type="hard", resource="memory"})
          /
        sum(node_memory_MemTotal_bytes{job="node-exporter"})
          > 1.5
      for: 5m
      labels:
        severity: warning
    - alert: KubeQuotaExceeded
      annotations:
        message: Namespace {{`{{`}} $labels.namespace {{`}}`}} is using {{`{{`}} printf "%0.0f" $value {{`}}`}}% of its {{`{{`}} $labels.resource {{`}}`}} quota.
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-kubequotaexceeded
      expr: |-
        100 * kube_resourcequota{job="kube-state-metrics", type="used"}
          / ignoring(instance, job, type)
        (kube_resourcequota{job="kube-state-metrics", type="hard"} > 0)
          > 90
      for: 15m
      labels:
        severity: warning
    - alert: CPUThrottlingHigh
      annotations:
        message: '{{`{{`}} printf "%0.0f" $value {{`}}`}}% throttling of CPU in namespace {{`{{`}} $labels.namespace {{`}}`}} for container {{`{{`}} $labels.container_name {{`}}`}} in pod {{`{{`}} $labels.pod_name {{`}}`}}.'
        runbook_url: {{ .Values.defaultRules.runbookUrl }}alert-name-cputhrottlinghigh
      expr: |-
        100 * sum(increase(container_cpu_cfs_throttled_periods_total{container_name!="", }[5m])) by (container_name, pod_name, namespace)
          /
        sum(increase(container_cpu_cfs_periods_total{}[5m])) by (container_name, pod_name, namespace)
          > 25
      for: 15m
      labels:
        severity: warning
{{- end }}