Kubernetes - CronJobs ⏳

Description 👀

CronJobs are a way to schedule a job to run at a specific time or interval. CronJobs are a great way to automate tasks that need to be run on a regular basis. CronJobs are similar to Jobs but have a schedule instead of a trigger.

Examples 🧩

• sample CronJob definition

    apiVersion: batch/v1
    kind: CronJob
    metadata:
        name: math-add-cronjob
    # spec for the cron job
    spec:
        # schedule is a cron expression, in this case it will run every minute
        schedule: "*/1 * * * *"
        jobTemplate:
            # spec for the job that will be created
            spec:
                template:
                # spec for the pod that will be created
                spec:
                    containers:
                    - name: math-add
                        image: ubuntu
                        command: ["expr", "77", "+", "5"]
                    restartPolicy: Never
  

• CronJob for the example used in the Jobs section to run at 21 hours 30 minutes everyday

    apiVersion: batch/v1
    kind: CronJob
    metadata:
        name: throw-dice-cron-job
    spec:
        schedule: "30 21 * * *"
        jobTemplate:
            spec:
                completions: 3
                parallelism: 3
                template:
                    metadata:
                        name: throw-dice-pod
                    spec:
                        containers:
                        - image: kodekloud/throw-dice
                            name: throw-dice
                        restartPolicy: Never
  

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