Skip to main content

​
Concept and Usage

A CronJob creates jobs on a time-based schedule. It is useful when you want to run a job at a specific time or at regular intervals.
Use crontab.guru to generate and validate cron expressions.

​
Cron Schedule Format

┌─────────── minute (0-59)
│  ┌────────── hour (0-23)
│  │  ┌───────── day-of-month (1-31)
│  │  │  ┌──────── month (1-12)
│  │  │  │  ┌─────── day-of-week (0-6, 0 = Sunday)
│  │  │  │  │
*  *  *  *  *
FieldAllowed Values
minute0–59
hour0–23
day-of-month1–31
month1–12
day-of-week0–6 (0 = Sunday)

​
CronJob YAML

cronjob.yaml
apiVersion: batch/v1
kind: CronJob
metadata:
  name: backup-cron-job
spec:
  schedule: "0 0 1 * *"  # At 00:00 on day-of-month 1
  jobTemplate:
    spec:                 # Job spec
      completions: 3      # Run 3 successful pod completions
      parallelism: 2      # Run 2 pods in parallel at a time
      template:           # Pod template
        spec:
          containers:
            - name: backup
              image: busybox
              command: ["echo", "Backup operation"]
          restartPolicy: Never

kubectl get cronjob

Build docs developers (and LLMs) love

Get started for freeTalk to us