apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: example-cronjob
spec:
  concurrencyPolicy: Forbid
  jobTemplate:
    spec:
      template:
        metadata:
          labels:
            app: example-cronjob
        spec:
          containers:
          - name: example-cronjob
            image: ubuntu:latest
            imagePullPolicy: Always
            command:
            - /bin/echo
            args:
            - i am a cronjob
  schedule: '* * * * *'
  successfulJobsHistoryLimit: 3