How do I get logs from all pods of a Kubernetes replication controller?

Question

Running kubectl logs shows me the stderr/stdout of one Kubernetes container.

How can I get the aggregated stderr/stdout of a set of pods, preferably those

Answer 1

You can get help from kubectl logs -h and according the info,

kubectl logs -f deployment/myapp -c myapp --tail 100

-c is the container name and --tail will show the latest num lines，but this will choose one pod of the deployment, not all pods. This is something you have to bear in mind.

kubectl logs -l app=myapp -c myapp --tail 100

If you want to show logs of all pods, you can use -l and specify a lable, but at the same time -f won't be used.