I turned to Linux Hint for this one. I used a previous post to setup the NFS share to media on file1 file server.

In order to add the Plex Media Server repository, I found the following to work from the Plex.tv website:

If the firewall is enabled, allow Plex with:

sudo ufw allow 32400

The problem with using a NFS share is that user plex has no rights on the file server and no password on the Plex server. I created user plex on the file server with a password to no avail. I brute-forced it by giving all files on the file server read access to everyone:

sudo chmod o+r /media/storage/protected plex -R

A more elegant solution is on my todo list.

block settings?