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CKADApplication Design and BuildSingle nodeEasy

Job with completions, parallelism and limits

Scenario ckad-des-003 · about 6 minutes · 8 points · 8 grader checks

Create a batch Job that runs several completions in parallel with retry and deadline limits.

  • job
  • batch
  • completions
  • parallelism

What you will practise

  • Create a Job imperatively and edit its spec
  • Use completions and parallelism
  • Bound a Job with backoffLimit and activeDeadlineSeconds

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-003

Task

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

In namespace "jobs" (create it if it does not exist) create a Job named "counter" that: - runs image busybox:1.36 with command: sh -c 'echo counting; sleep 2' - must complete successfully 3 times, running at most 2 pods in parallel - is retried at most 2 times on failure (backoffLimit) - is terminated if it runs longer than 120 seconds - never restarts a failed container in place (the pod restart policy is Never) The Job must finish with all 3 completions succeeded.

Requirements and details

Certification
CKAD · Certified Kubernetes Application Developer
Domain
Application Design and Build
Difficulty
Easy
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
6 minutes
Points
8
Grader checks
8
Kubernetes version
1.37
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 8 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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Independent community project, not affiliated with or endorsed by CNCF or The Linux Foundation. Lab results are practice feedback, not an exam score.