Network File System (NFS) is a distributed file system protocol. which allowing a user on a client computer to access files over a network in a manner similar to how local storage is accessed.
This article will help you to install and configure NFS on Ubuntu systems and export an directory and mount it on client system.
We have running two Ubuntu 12.04 LTS Systems in same network 192.168.1.0/24, Below given ips are configured on server and client, which we will use in this tutorial.
Server: 192.168.1.100 Client: 192.168.1.110
Step 1: Set Up NFS Server on Ubuntu
In this step we will describe you to what packages you need to install and how to install them. Also describes who to export and directory using NFS server.
1.1 – Install Pacakges
Use following command to install required packages to configure NFS server.
$ sudo apt-get install nfs-kernel-server portmap
1.2 – Export Directory
After completing package installation, we need to configure nfs to export directory. For this tutorial we are creating a new directory, you may use any existing directory also.
$ sudo mkdir /var/www/share $ sudo chown nobody:nogroup /var/www/share
Configure NFS to export above created directory and home directory. So that this directory can be accessible over network using NFS.
$ sudo vim /etc/exports /home 192.168.1.0/24(rw,sync,no_root_squash,no_subtree_check) /var/www/share 192.168.1.110(rw,sync,no_subtree_check)
After configuring /etc/exports execute following command to export.
$ sudo exportfs -a
1.3 – Verify Exported Directory
To confirm and view exported directory use following command and you will get output like below
$ sudo exportfs -v [Samput Output] /home 192.168.1.0/24(rw,wdelay,no_root_squash,no_subtree_check) /var/www/share 192.168.1.110(rw,wdelay,no_root_squash,no_subtree_check)
Step 2: Set Up NFS Client
After completing set up on server side, login to clients system where we need to configure nfs client and mount exported directory by nfs server.
2.1 – Install Packages
Install following packages on NFS client system, which is required to mount remote directory using nfs.
$ sudo apt-get install nfs-common portmap
2.2 – Mount Remote Exported Directory
Now we need to create mount points for mounting remote nfs exported directories.
$ sudo mkdir /mnt/share $ sudo mkdir /mnt/home
After creating mount point, mount remote NFS exported directory using following command.
$ sudo mount 192.168.1.100:/var/www/share /mnt/share $ sudo mount 192.168.1.100:/home /mnt/home
2.3 – Verify Mounted Directory
Check mounted file system using below commands. As per below output both nfs mounted directories are listed at end of result.
$ sudo df -h [Sample Output] Filesystem Size Used Avail Use% Mounted on /dev/sda1 20G 2.8G 16G 16% / udev 371M 4.0K 371M 1% /dev tmpfs 152M 812K 151M 1% /run none 5.0M 0 5.0M 0% /run/lock none 378M 8.0K 378M 1% /run/shm /dev/sr0 32M 32M 0 100% /media/CDROM /dev/sr1 702M 702M 0 100% /media/Ubuntu 12.04 LTS i386 192.168.1.100:/var/www/share 20G 2.8G 16G 16% /mnt/share 192.168.1.100:/home 20G 2.8G 16G 16% /mnt/home
2.4 Set Up Auto Mount
Add the following lines in /etc/fstab to mount NFS directories automatically after system reboot. This will mount directories on start up after the server reboots.
192.168.1.100:/home /mnt/home nfs auto,noatime,nolock,bg,nfsvers=3,intr,tcp,actimeo=1800 0 0 192.168.1.100:/var/www/share /mnt/share nfs auto,noatime,nolock,bg,nfsvers=3,intr,tcp,actimeo=1800 0 0
2.5 – Unmount NFS Mount Point
If you want to remove mounted file system, You can simply unmounted it using umount command. Also you need to remove entries from /etc/fstab (if added)
# sudo umount /mnt/share # sudo umount /mnt/home