How to share files via NFS

This guide explains how to share files between servers via network. NFS stands for Network File System and can be used to access data of the remote server locally via attached filesystem. This example consists 2 servers, one of them will act as a host (storage1) and second will be a client (storage2) to which the file system will be attached from the host.

Connect to both host and client and install nfs-utils package.


[root@storage1 ~]# yum -y install nfs-utils
[root@storage2 ~]# yum -y install nfs-utils


[root@storage1 ~]# yum -y install nfs-common
[root@storage2 ~]# yum -y install nfs-common

Create directory which will be shared with the client server. If it’s already created then skip this step.

[root@storage1 ~]# mkdir -p /home/data

Assign permissions and ownership to the share folder.

[root@storage1 ~]# chmod -R 755 /home/data/
[root@storage1 ~]# chown nfsnobody:nfsnobody /home/data/

Start NFS services.

[root@storage1 ~]# systemctl enable rpcbind
[root@storage1 ~]# systemctl enable nfs-server
Created symlink from /etc/systemd/system/ to /usr/lib/systemd/system/nfs-server.service.
[root@storage1 ~]# systemctl enable nfs-lock
[root@storage1 ~]# systemctl enable nfs-idmap
[root@storage1 ~]# systemctl start rpcbind
[root@storage1 ~]# systemctl start nfs-server
[root@storage1 ~]# systemctl start nfs-lock
[root@storage1 ~]# systemctl start nfs-idmap

Define which folder to which client will be shared by editing file /etc/exports

[root@storage1 ~]# vi /etc/exports

In this case the content of the file will be as follows where is the client server public IP address.


Restart NFS service.

[root@storage1 ~]# systemctl restart nfs-server

In the client server choose the directory in which the shared folder will be mounted or create new one.

[root@storage2 ~]# mkdir -p /home/mystorage/

Attach the file system from the host to the client.

[root@storage2 ~]# mount -t nfs /home/mystorage/

Check if the file system was attached successfully.

[root@storage2 ~]# df -h
Filesystem             Size  Used Avail Use% Mounted on
devtmpfs               185M     0  185M   0% /dev
tmpfs                  209M     0  209M   0% /dev/shm
tmpfs                  209M  8.8M  200M   5% /run
tmpfs                  209M     0  209M   0% /sys/fs/cgroup
/dev/sda1               10G  2.0G  8.1G  20% /
tmpfs                   42M     0   42M   0% /run/user/0   10G  2.1G  8.0G  21% /home/mystorage

There we have text file in the host server:

[root@storage1 ~]# cat /home/data/file.txt
This text file exists in storage1

Now it can be accessed locally in the client server:

[root@storage2 ~]# cat /home/mystorage/file.txt
This text file exists in storage1

To keep the file system mounted after client server reboot add the following line at the bottom of the file /etc/fstab where is the host server public IP address. /home/mystorage nfs defaults 0 0

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