Configure NFS [Network File System] in Centos 7

Description: 

Network File System (NFS) is a popular distributed file system protocol that enables users to mount remote directories on their server. NFS lets you leverage storage space in a different location and allows you to write onto the same space from multiple servers or clients in an effortless manner.

Procedure:

NFS Server side:

• First step to install NFS using yum using below command 

# yum install nfs-utils

• Now create directory that need to share using NFS 

# mkdir /data

• Change permission on directory as follow

# chmod -R 755 /data

# chown nfsnobody:nfsnobody /data

• Need to start service and enable them as boot time

# systemctl enable rpcbind

# systemctl enable nfs-server

# systemctl enable nfs-lock

# systemctl enable nfs-idmap

# systemctl start rpcbind

# systemctl start nfs-server

# systemctl start nfs-lock

# systemctl start nfs-idmap

• Share directory over network using following

# vi /etc/exports

/var/nfsshare    * (rw,sync,no_root_squash,no_all_squash)

/home            10.10.10.10 (rw,sync,no_root_squash,no_all_squash)

Note : 10.10.10.10 is the IP of client machine, if you wish that any other client should access it you need to add the it IP wise other wise you can add "*" instead of IP for all IP access.

• Restart NFS service 

# systemctl restart nfs-server

• After restart service need to allow NFS port in firewall 

# firewall-cmd --permanent --zone=public --add-service=nfs

# firewall-cmd --permanent --zone=public --add-service=mountd

# firewall-cmd --permanent --zone=public --add-service=rpc-bind

# firewall-cmd --reload

NFS Client Side:

• Install nfs-util using below command 

# yum install nfs-utils

• Create directory to  mount from NFS

# mkdir /mnt/nfsshare

# mkdir /mnt/home

• After creating directory now mount from NFS using below command:

# mount -t nfs 10.10.10.1:/var/nfsshare /mnt/nfsshare

# mount -t nfs 10.10.10.1:/home /mnt/home

• After mount check storage using below command 

# df -kh

Filesystem                             Size     Used   Avail   Use%   Mounted on

/dev/mapper/centos-root       39G      1.1G    38G    3%       /

devtmpfs                                488M    0        488M   0%       /dev

tmpfs                                     494M     0        494M   0%      /dev/shm

tmpfs                                     494M    6.7M   487M   2%     /run

tmpfs                                     494M     0        494M    0%      /sys/fs/cgroup

/dev/mapper/centos-home    19G      33M    19G      1%      /home

/dev/sda1                               497M  126M   372M    26%    /boot

10.10.10.1:/var/nfsshare       49G    980M   48G     3%      /mnt/nfsshare 

10.10.10.1:/home                   19G   33M     19G      1%      /mnt/home

• Now we are connecting NFS shared drive, please check by create test file 

# touch  /mnt/nfsshare/testfile

Permanent  NFS Mounting

• We need to remount after every reboot, so to mount them as permanent by adding NFS share in fstab as follow:

# vi /etc/fstab

Add entries as follow 

10.10.10.1:/var/nfsshare   /mnt/nfsshare  nfs defaults 0 0

Save file using :wq 

• Now check by reboot client machine and directory mounted or not.