So, yesterday evening y0sh came to me with following problem: "I got an real nice proxmox server with loads of CPU and RAM - and nearly no storage left. And I got an small little Atom Server with loads of Storage - but not very useful as VM Host - and yes, they are within the same network". Ok, so: Lets create an NFSv3 Server on the Atom system and mount it as disk storage within Proxmox 🙂

# Atom Server (Ubuntu)
# Install NFS v3 Server
sudo apt-get install nfs-kernel-server rpcbind
# Create Shared Directories
sudo mkdir -p /var/nfsshare
sudo chmod -R 777 /var/nfsshare
# Configure Server
sudo vi /etc/exports
# Insert the line into exports, with the IP Address of your NFS Client / Proxmox Server
/var/nfsshare 192.168.1.111(rw,sync,no_root_squash)
# save and exit, fine tuning:
sudo vi /etc/default/nfs-kernel-server
# change the line RPCMOUNTDOPTS to
RPCMOUNTDOPTS="--manage-gids --no-nfs-version 4"
# to use nfs v3 ...
# reload the nfs exports...
sudo exportfs -r
# ...or restart the server
sudo /etc/init.d/nfs-kernel-server restart
# show all share directorys
sudo exportfs -v

# Mount NFS in Proxmox
Go to Datacenter, Storage, Add, NFS
IP: