I run various NFS network shares and ‘mount’ them as readonly or read/write on clients running Ubuntu.
On a vanilla Ubuntu image the first step is to install the NFS client and tools to be able to mount a share.
sudo apt-get install rpcbind nfs-common
From there, mounting a share:
mount NFS-Server-IP:/path/to/share /folder/on/client
e.g.
mount 192.168.1.2:/volumes/shared_files /home/mounted_directory/
Note: You must create a blank folder on your client to mount the NFS share to. E.g. if using /home/backups then mkdir /home/backups before mounting the share.