Cron Job

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• you can create Jobs to run number of task inside Pod
• It run instantly and completes

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Run Periodically or At Schedule Time

apiVersion: batch/v1
kind: CronJob
metadata:
  name: hello
spec:
  schedule: "* * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: hello
            image: busybox:1.28
            imagePullPolicy: IfNotPresent
            command:
            - /bin/sh
            - -c
            - date; echo Hello from the Kubernetes cluster
          restartPolicy: OnFailure
 

• The .spec.schedule field is required. The value of that field follows the Cron syntax
• The .spec.jobTemplate defines a template for the Job that CronJob creates.
• The .spec.jobTemplate.spec.template defines a template for actual Job

Commands

1. Create a cronjob

kubectl create -f cronjob.yaml

2. Check cronjob detail

kubectl get cronjob

3. To delete the cronjob

kubectl delete cronjob <job-name>

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⬅️ Jobs | ➡️

References

1. https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/