CKA CKA Logging and Monitoring

Question 1

How do you view logs from a running pod named 'webapp'?

Accepted Answer

kubectl logs webapp

Answer

Use `kubectl logs <pod-name>` to retrieve logs from a running pod.

Question 2

Which flag streams live log output continuously from a pod?

Accepted Answer

--follow

Answer

The `--follow` (or `-f`) flag streams live log output from a pod, similar to `tail -f`.

Question 3

How do you view logs from a specific container 'nginx' inside a multi-container pod 'mypod'?

Accepted Answer

kubectl logs mypod -c nginx

Answer

The `-c <container-name>` (or `--container`) flag targets a specific container in a multi-container pod.

Question 4

How do you retrieve logs from a previously crashed/terminated container in a pod?

Accepted Answer

kubectl logs mypod --previous

Answer

The `--previous` flag retrieves logs from the last terminated container instance in a pod.

Question 5

Where does Kubernetes store container log files on the node by default?

Accepted Answer

/var/log/containers/

Answer

Container logs are written to `/var/log/containers/` on the node, symlinked from `/var/log/pods/`.

(CKA) Certified Kubernetes Administrator Practice Test