CKAD — Jobs & CronJobs
Jobs & CronJobs — Chapter Overview
Jobs and CronJobs are Kubernetes resources for batch processing — tasks that start, do their work, and exit. Unlike Deployments (which keep Pods running forever), Jobs are designed for finite workloads like database migrations, report generation, and scheduled backups.
This topic falls under the Application Design and Build domain (20% of the CKAD exam).
What You’ll Learn
| # | Topic | What’s Covered |
|---|---|---|
| 1 | Understanding Jobs | What are Jobs, creating Jobs imperatively and declaratively |
| 2 | Completions & Parallelism | Sequential completions, parallel processing, Job settings |
| 3 | Handling Job Failures | backoffLimit, activeDeadlineSeconds, restart policies, TTL cleanup |
| 4 | CronJobs | Cron schedule format, creating CronJobs, concurrency policies |
| 5 | Managing Jobs & CronJobs | List, inspect, delete, suspend, and resume |
| 6 | Hands-On Lab | Parallel processing lab, CronJob history lab, practice questions |
CKAD Exam Relevance
| Area | What’s Tested |
|---|---|
| Creating Jobs | Imperative and declarative approaches |
| Job configuration | completions, parallelism, backoffLimit |
| CronJobs | Schedule syntax, concurrencyPolicy |
| Troubleshooting | Inspecting failed Jobs, viewing logs |
Prerequisites
Before starting this chapter, you should be comfortable with:
- Pod Design Patterns — Pods, labels, lifecycle
- Multi-Container Pods — Container patterns
