CKAD Observability: Probes, Logging, and Debugging 2

Question 1

Which probe type runs a command inside the container and considers exit code 0 as success?

Accepted Answer

exec

Answer

The 'exec' probe type runs a command in the container; exit code 0 means healthy, any other code means failure.

Question 2

What does 'kubectl describe pod mypod' show that 'kubectl get pod mypod' does not?

Accepted Answer

Detailed events, container states, probe results, and resource limits

Answer

'kubectl describe' provides detailed output including events, conditions, container state transitions, and probe configurations — essential for debugging.

Question 3

How do you run an interactive shell inside a running pod named 'debug-pod'?

Accepted Answer

kubectl exec -it debug-pod -- /bin/sh

Answer

The '-it' flags allocate a TTY and keep stdin open, enabling an interactive shell session inside the container.

Question 4

A pod is in 'CrashLoopBackOff' status. What is the most likely cause?

Accepted Answer

The container keeps crashing after restart due to application errors or misconfigurations

Answer

CrashLoopBackOff means the container starts, crashes, is restarted, and crashes again repeatedly — check logs to find the root cause.

Question 5

Which 'kubectl logs' flag shows logs from the previously terminated container instance?

Accepted Answer

--previous

Answer

'kubectl logs --previous' retrieves the logs of the last terminated container, useful for diagnosing crash causes.

CKAD - Certified Kubernetes Application Developer Practice Test

CKAD - Certified Kubernetes Application Developer Practice Test

CKAD Observability: Probes, Logging, and Debugging 2