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CKADApplication DeploymentSingle nodeMedium

Roll back a failed rollout and tune the strategy

Scenario ckad-dep-001 · about 6 minutes · 9 points · 9 grader checks

Recover a Deployment whose latest rollout is stuck by rolling back, then make future rollouts zero-downtime.

  • deployment
  • rollout
  • rollback
  • rolling-update
  • strategy

What you will practise

  • Inspect rollout status and history
  • Roll back with kubectl rollout undo
  • Configure maxSurge and maxUnavailable

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-dep-001

Task

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

In namespace "rollout" the Deployment "api" (3 replicas) was just updated and the new rollout does not progress. 1. Roll the Deployment "api" back to its previous, working revision. Do not delete and recreate the Deployment. 2. Change its update strategy so that a rolling update never takes a pod away before its replacement is ready: RollingUpdate with maxSurge 1 and maxUnavailable 0. When you are done all 3 replicas must be Ready and up to date.

Requirements and details

Certification
CKAD · Certified Kubernetes Application Developer
Domain
Application Deployment
Difficulty
Medium
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
6 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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Independent community project, not affiliated with or endorsed by CNCF or The Linux Foundation. Lab results are practice feedback, not an exam score.