I have a pod that is being run as an individual pod created from the API directly and not from kubectl. I can confirm the only container within the pod is running and it is logging when I go directly to the node and run docker logs -f <container id> but when I do a kubectl logs -f <pod name> no logs are outputted. I've been running Kubernetes for awhile now, and this is the first time I've run into this. I am running the latest stable version (1.4.x).
The issue was that the container in the pod was set as a TTY enabled container which caused the process inside the container to have a prompt that was blocking any logs from being sent out to the connection kubectl opens up.