Wednesday 22 October 2008

HOWTO: NFS server

Install NFS Server Support
at the terminal type
sudo apt-get install nfs-kernel-server nfs-common portmap
(Optional: sudo dpkg-reconfigure portmap)
sudo /etc/init.d/portmap restart

Editing /etc/exports
the /etc/exports file is used for creating a share on the NFS server

invoke your favorite text editor or
sudo vi /etc/exports

Here are some quick examples of what you could add to your /etc/exports

For Full Read Write Permissions allowing any computer from 192.168.1.1 through 192.168.1.255

  • /files 192.168.1.1/24(rw,no_root_squash,async)
    Here /24 is netmask, meaning the netmask is 24 bits. Therefore, above line can be equivalent to:
  • /files 192.168.1.1/255.255.255.0 (rw,no_root_squash,async)
    details can be found in the reference

Or for Read Only from a single machine
  • /files 192.168.1.2 (ro,async)
save this file and then in a terminal type
sudo /etc/init.d/nfs-kernel-server restart

Also aftter making changes to /etc/exports in a terminal you must type
sudo exportfs -a

Install NFS client support
sudo apt-get install portmap nfs-common

Mounting manually
Example to mount server.mydomain.com:/files to /files. In this example server.mydomain.com is the name of the server containing the nfs share, and files is the name of the share on the nfs server

The mount point /files must first exist on the client machine.
cd /
sudo mkdir files


to mount the share from a terminal type

sudo mount server.mydomain.com:/files /files

Note you may need to restart above services:
sudo /etc/init.d/portmap restart
sudo /etc/init.d/nfs-common restart


Mounting at boot using /etc/fstab
Invoke the text editor using your favorite editor, or
gksudo gedit /etc/fstab

In this example my /etc/fstab was like this:
  • server.mydomain.com:/files /files nfs rsize=8192,wsize=8192,timeo=14,intr
You could copy and paste my line, and change “servername.mydomain.com:/files”, and “/files” to match your server name:share name, and the name of the mount point you created.
It is a good idea to test this before a reboot in case a mistake was made.
type
mount /files
in a terminal, and the mount point /files will be mounted from the server.

Reference:
==========
http://www.cyberciti.biz/tips/ubuntu...nfs-share.html (for client configuration)
http://www.redhat.com/docs/manuals/l...nfs-mount.html (for mounting using fstab)
http://czarism.com/easy-peasy-ubuntu...s-file-sharing (for server configuration)
http://www.freebsd.org/doc/en_US.ISO...twork-nfs.html (contains more info about NFS)
http://www.freebsd.org/cgi/man.cgi?query=exports&sektion=5 (man for exports)
http://www.computerhope.com/jargon/n/netmask.htm (netmask /24 things)

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