cronjob.yml

apiVersion: batch/v1
kind: CronJob
metadata:
  name: etcd-maintanence
  namespace: default
spec:
  # every day at 4 am 
  schedule: "0 4 * * *"
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 1
  failedJobsHistoryLimit: 1
  jobTemplate:
    spec:
      # 6 hours ttl to troubleshoot any potential problems
      ttlSecondsAfterFinished: 3600
      parallelism: 1
      backoffLimit: 1
      template:
        spec:
          containers:
          - name: etcd-maintainer
            image: ugurozturk99/etcdctl:v0.0.27-SNAPSHOT
            command: ["etcdctldefrag"]
            env:
            - name: PROMETHEUSSVC
              value: "prometheus-service"
            - name: PROMETHEUSNS
              value: "namespace"
            volumeMounts:
            - mountPath: /etc/secret-volume
              name: secret-volume
              readOnly: true
          volumes:
          - name: secret-volume
            secret:
              defaultMode: 420
              secretName: etcd-certs
          serviceAccount: etcd-maintainer
          restartPolicy: Never