KCNA Kubernetes Fundamentals Practice Question
You create a Pod with a liveness probe that uses an HTTP GET on port 8080, path /healthz. The probe fails after the container starts. What will happen to the Pod?
⚠ Common exam trap
Many candidates confuse liveness probes with readiness probes: candidates often think a failing liveness probe removes the Pod from Service endpoints, but that is the job of a readiness probe, while liveness probes only trigger container restarts.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The container will be restarted automatically
A liveness probe is designed to determine if a container is still running properly. When an HTTP GET liveness probe fails, kubelet considers the container unhealthy and automatically restarts it according to the Pod's restart policy (defaulting to Always). This ensures the container can recover from transient failures without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Pod will be marked as Unhealthy and removed from Service endpoints
Why it's wrong here
Removal from Service endpoints is a readiness probe behavior, not liveness.
- ✓
The container will be restarted automatically
Why this is correct
Liveness probe failure triggers container restart.
- ✗
The Pod will be evicted from the node
Why it's wrong here
Eviction happens due to resource pressure or node failure, not liveness probe failure.
- ✗
The Pod will be deleted and recreated on a different node
Why it's wrong here
That is not automatic; the container is restarted in place.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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