Deploy NFS server inside a Kubernetes cluster

Using NFS shared volumes in Kubernetes is easy. But what if you want to serve NFS volumes from with Kuberentes? It turns out to be a tricky thing. Here is a tutorial on how to enable Kuberentes to share NFS volumes. In the end of this tutorial we create a Deployment with a container sharing a directory from the host machine, and a few containers using this shared directory as a persistent volume.