NFS

1. Verify NFS Server Installation

Ensure that the NFS server packages are installed on your server:

sudo apt update
sudo apt install nfs-kernel-server

2. Configure NFS Exports

Ensure your /etc/exports file is correctly configured. Your entry looks correct:

/data/nfs/kubedata  *(rw,sync,no_subtree_check)

3. Apply Export Changes

After editing /etc/exports, you need to apply the changes:

sudo exportfs -ra

4. Check NFS Server Status

Ensure the NFS server is running:

sudo systemctl status nfs-server

If it’s not running, start it:

sudo systemctl start nfs-server

And enable it to start on boot:

sudo systemctl enable nfs-server

5. Configure Firewall

Ensure that your firewall allows NFS traffic. You need to open the following ports for NFS:

• 111 (rpcbind/sunrpc)
• 2049 (nfs)
• 20048 (mountd, if used)

You can do this using ufw (Uncomplicated Firewall) or iptables.

For ufw, use:

sudo ufw allow 111
sudo ufw allow 2049
sudo ufw allow 20048
sudo ufw reload

For iptables, use:

sudo iptables -A INPUT -p tcp --dport 111 -j ACCEPT
sudo iptables -A INPUT -p udp --dport 111 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 2049 -j ACCEPT
sudo iptables -A INPUT -p udp --dport 2049 -j ACCEPT
sudo iptables -A INPUT -p tcp --dport 20048 -j ACCEPT
sudo iptables -A INPUT -p udp --dport 20048 -j ACCEPT
sudo iptables-save | sudo tee /etc/iptables/rules.v4

6. Check Network Configuration

Ensure that there are no network issues preventing access:

• Verify that the server and client can ping each other.
• Check for any network policies or firewalls that might be blocking the traffic.

7. Client Configuration

On the client side, ensure the NFS client package is installed:

sudo apt update
sudo apt install nfs-common

Then, try to mount the NFS share:

sudo mount -t nfs <server-ip>:/data/nfs/kubedata /mnt

Replace <server-ip> with the actual IP address of your NFS server.

8. Verify Mount

Check if the NFS share is mounted correctly:

df -h /mnt