heartbeat.yaml

{{ if not .Values.disableHeartBeat -}}
---
###
### Heartbeat
###
apiVersion: batch/v1
kind: CronJob
metadata:
  name: linkerd-heartbeat
  namespace: {{ .Release.Namespace }}
  labels:
    app.kubernetes.io/name: heartbeat
    app.kubernetes.io/part-of: Linkerd
    app.kubernetes.io/version: {{.Values.linkerdVersion}}
    linkerd.io/control-plane-component: heartbeat
    linkerd.io/control-plane-ns: {{.Release.Namespace}}
    {{- with .Values.commonLabels }}{{ toYaml . | trim | nindent 4 }}{{- end }}
  annotations:
    {{ include "partials.annotations.created-by" . }}
spec:
  concurrencyPolicy: Replace
  {{ if .Values.heartbeatSchedule -}}
  schedule: "{{.Values.heartbeatSchedule}}"
  {{ else -}}
  schedule: "{{ dateInZone "04 15 * * *" (now | mustDateModify "+10m") "UTC"}}"
  {{ end -}}
  successfulJobsHistoryLimit: 0
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            linkerd.io/control-plane-component: heartbeat
            linkerd.io/workload-ns: {{.Release.Namespace}}
            {{- with .Values.podLabels }}{{ toYaml . | trim | nindent 12 }}{{- end }}
          annotations:
            {{ include "partials.annotations.created-by" . }}
            {{- with .Values.podAnnotations }}{{ toYaml . | trim | nindent 12 }}{{- end }}
        spec:
          {{- if .Values.priorityClassName }}
          priorityClassName: {{ .Values.priorityClassName }}
          {{- end -}}
          {{- with .Values.runtimeClassName }}
          runtimeClassName: {{ . | quote }}
          {{- end }}
          {{- if .Values.tolerations -}}
          {{- include "linkerd.tolerations" . | nindent 10 }}
          {{- end -}}
          {{- include "linkerd.node-selector" . | nindent 10 }}
          securityContext:
            seccompProfile:
              type: RuntimeDefault
          serviceAccountName: linkerd-heartbeat
          restartPolicy: Never
          containers:
          - name: heartbeat
            image: {{.Values.controllerImage}}:{{.Values.controllerImageVersion | default .Values.linkerdVersion}}
            imagePullPolicy: {{.Values.imagePullPolicy}}
            env:
            - name: LINKERD_DISABLED
              value: "the heartbeat controller does not use the proxy"
            args:
            - "heartbeat"
            - "-controller-namespace={{.Release.Namespace}}"
            - "-log-level={{.Values.controllerLogLevel}}"
            - "-log-format={{.Values.controllerLogFormat}}"
            - "-prometheus-url=http://prometheus.linkerd-viz.svc.{{.Values.clusterDomain}}:9090"
            {{- if .Values.heartbeatResources -}}
            {{- include "partials.resources" .Values.heartbeatResources | nindent 12 }}
            {{- end }}
            securityContext:
              capabilities:
                drop:
                - ALL
              readOnlyRootFilesystem: true
              runAsNonRoot: true
              runAsUser: {{.Values.controllerUID}}
              allowPrivilegeEscalation: false
              seccompProfile:
                type: RuntimeDefault
{{- end }}