NFS Server

NFS Server

NFS ,the network file system used by Linux/unix and network storage devices to allow multiple clients to share the files over the network .

It is used to allow users to access their files from different clients in the same group.

NFS Server Configuration

Service profile

Service:  nfs

Package: nfs.utils

Port no:2049/TCP

Configuration file: /etc/exports

Script file: /etc/init.d/nfs

Daemons: nfsd, statd, lockd(used for file locking)

               mountd (used to mount the sharing directory)

               rquatod (to assign users and groups on a particular directory)

Step:1

Instal the package through yum

[root@nfs~]#yum install nfs* -y

Step:2

 Create any folders to be shared

[root@nfs!]#mkdir /var/raju

Give the permissions so user can do read /write

[root@nfs~]#chmod 777  /var/raju

Create files and directories inside a folder that we want to share

[root@raju]#touch file[1..10]

[root@raju]#mkdir -p dir1 dir2 dir3 

Step:3

Add the folders to be shared to /etc/exports file

[root@nfs~]vi /etc/exports

 /var/raju     192.168.0.0/24(ro,sync)       #exports the director /var/raju to all the hosts on the 

network with   read-only permission

:wq!

# /var/raju  = shared directory.

# 192.162.0.0/24  = Range of the network

# rw = Read and write access.

# ro = Read only access.

# sync = synchronize

# no_root_squash  = enables root access and privilege.

# no_all_squash   = enables user access.

[root@nfs~]# chkconfig nfs on

[root@nfs~]# service nfs restart

[root@nfs~]# exports -r # run this  to apply the changes to the /etc/exports file 

[root@nfs~]# exports -v  #to display all exports

Client side configuration

[root@client~]# ssh 192.168.0.X

 where X is any client number

To see the list of shared files from nfs server

[root@nfs~]# showmount -e 192.168.0.x

 where X is NFS server number

 To mount an NFS file system on a cilent

create an empty directory for mount point it it doesnot exist already

[root@client]#mkdir /var/raj

[root@client]#mount -t nfs 192.168.0.X:/var/raj   # temporary mount

 for permanent mount add the below line in ./etc/fstab

192.168.0.X    /raj         nfs       defaults        0 0

:wq!

 [root@client]#mount –a