I have a Kubernetes setup installed in my Ubuntu machine. I\'m trying to setup a nfs volume and mount it to a container according to this http://kubernetes.io/v1.1/examples/
In my case the issue was that i hadn't declared the host server of the nfs in the /etc/exports file. After adding an entry in there for my host server, the volume was working correctly.
if you modify the file in anyway then you need restart the service too;
sudo systemctl restart nfs-kernel-server
An example of an entry in the /etc/exports file;
/var/nfs/home 192.111.222.333(rw,sync,no_subtree_check)