View log files of crashed pods in kubernetes

Question

Any idea to view the log files of a crashed pod in kubernetes? My pod is listing it's state as "CrashLoopBackOff" after started the replicationController. I search the available docs and couldn't find any.

Answer 1

Assuming that your pod still exists:

kubectl logs <podname> --previous

$ kubectl logs -h
-p, --previous[=false]: If true, print the logs for the previous instance of the container in a pod if it exists.

Answer 2

There was a bug in kubernetes that prevents logs obtaining for pods in CrashLoopBackOff state. Looks like it was fixed. Here issue on github with additional information