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CKADApplication Design and BuildSingle nodeMedium

CronJob with history limits and a manual run

Scenario ckad-des-004 · about 7 minutes · 9 points · 9 grader checks

Create a CronJob with concurrency and history settings, then trigger an immediate run from it.

  • cronjob
  • job
  • batch
  • schedule

What you will practise

  • Create a CronJob with a cron schedule
  • Set concurrencyPolicy and job history limits
  • Run a CronJob on demand with kubectl create job --from

Start this lab

With the CLI installed and signed in, this command provisions a single node cluster on your Mac, applies the scenario setup and prints the task below.

goldenkube start ckad-des-004

Task

The task text exactly as the CLI shows it. Solve it on the cluster, then run goldenkube submit.

In namespace "cron" (create it if it does not exist): 1. Create a CronJob named "reporter" that runs every 5 minutes (schedule "*/5 * * * *") with image busybox:1.36 and command: sh -c 'date; echo report' - a new run must not start while the previous one is still running - keep 2 successful and 1 failed finished Jobs in the history - the pod restart policy is OnFailure 2. Do not wait for the schedule: trigger one run now by creating a Job named "reporter-manual" from the CronJob "reporter". That Job must complete successfully.

Requirements and details

Certification
CKAD · Certified Kubernetes Application Developer
Domain
Application Design and Build
Difficulty
Medium
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
7 minutes
Points
9
Grader checks
9
Kubernetes version
1.37
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 9 state checks read your cluster when you submit; the scenario passes when every check passes. Hints, the reference solution and the check definitions are available only inside the CLI, not on this page.

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