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CKADApplication Observability and MaintenanceSingle nodeEasy

Readiness and liveness probes

Scenario ckad-obs-001 · about 7 minutes · 10 points · 10 grader checks

Add HTTP readiness and TCP liveness probes with specific timings to a running Deployment.

  • probes
  • readiness
  • liveness
  • health-checks
  • deployment

What you will practise

  • Distinguish readiness and liveness probes
  • Configure httpGet and tcpSocket probe handlers
  • Set probe timing fields

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-obs-001

Task

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

In namespace "probes" the Deployment "health" (image nginx:1.27, 2 replicas, container "nginx") has no health checks. Add them to the existing Deployment (do not delete and recreate it): 1. A readiness probe: HTTP GET on path "/" port 80, initial delay 5 seconds, period 7 seconds. 2. A liveness probe: TCP socket check on port 80, period 15 seconds, failure threshold 4. When you are done both replicas must be Ready and run the updated pod template.

Requirements and details

Certification
CKAD · Certified Kubernetes Application Developer
Domain
Application Observability and Maintenance
Difficulty
Easy
Cluster topology
Single node
Cluster features
None beyond the base cluster
Recommended time
7 minutes
Points
10
Grader checks
10
Kubernetes version
1.37
Minimum CLI version
0.1.0
Scenario version
1
Published

Grading runs locally: 10 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.