NFS

Setting up NFS (Network File System) on an Ubuntu server involves a few steps. Here’s a basic guide on how to do it:

Step 1: Install NFS Server on Ubuntu Server

First, you need to install the NFS server package on your Ubuntu server:

sudo apt update
sudo apt install nfs-kernel-server
sudo apt install nfs-common

sudo systemctl start nfs-server
sudo systemctl enable nfs-server

Step 2: Create a Directory to Share

You’ll need a directory on your server that you want to share with other machines. For example, let’s create a directory called /nfs_share:

sudo mkdir /nfs_share

Step 3: Configure NFS Exports

Edit the NFS exports file to specify which directories you want to share and which machines can access them. Open the /etc/exports file in a text editor:

sudo nano /etc/exports

Add a line to specify the directory you want to share and the allowed client(s). For example, to allow access to the /nfs_share directory from a specific IP address (replace client_ip with the actual IP):

•	/nfs_share: The directory you want to share.
•	client_ip: Replace this with the IP address of the client machine that should have access.
•	rw: Grants read and write access.
•	sync: Synchronous write mode (recommended for data consistency).
•	no_subtree_check: Disables subtree checking for better performance.

/nfs_share client_ip(rw,sync,no_subtree_check)

Save the file and exit the text editor.

Step 4: Export the Shared Directory

Apply the changes to the NFS configuration by running:

sudo exportfs -a

Step 5: Start and Enable NFS Services

Start the NFS server and enable it to start at boot:

sudo systemctl start nfs-kernel-server
sudo systemctl start nfs-kernel-server

Step 6: Configure Firewall Rules (if applicable)

If you have a firewall enabled, you may need to allow NFS traffic. The default NFS port is 2049. You can allow NFS traffic with:

sudo ufw allow from client_ip to any port 2049

Step 7: Test NFS Share from Client

On the client machine, you can mount the shared directory. Replace server_ip with the IP address or hostname of your Ubuntu server:

sudo mkdir /mnt/nfs_share
sudo mount -t nfs server_ip:/nfs_share /mnt/nfs_share

You should now be able to access the shared directory on the client machine at /mnt/nfs_share.

Remember that this is a basic setup. For production environments, you should consider security, user authentication, and specific access permissions carefully. Additionally, NFS should ideally be used within a trusted network or with proper network security measures in place.