Server and Client OS = CentOS Linux release 8.4.2105
NFS = Network File System
NFS Server Hostname = nfsserver.jk.com
IP Address = 192.168.111.129/24
NFS Client Hostname = nfsclient.jk.com
IP Address = 192.168.111.128/24
NFS Directory = /nfsdata
NFS mount point = /mnt/data
NFS Server setup
Install nfs-utils on server.
[root@nfsserver nfsdata]# yum install nfs-utils
To make nfs-server service enabled on reboot
[root@nfsserver nfsdata]# systemctl enable nfs-server
Starting nfs server service
[root@nfsserver nfsdata]# systemctl start nfs-server
Check status of nfs-server
[root@nfsserver nfsdata]# systemctl status nfs-server
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
Drop-In: /run/systemd/generator/nfs-server.service.d
└─order-with-mounts.conf
Active: active (exited) since Wed 2021-08-04 21:31:04 IST; 3s ago
Process: 2042 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
Process: 2040 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
Process: 2039 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
Process: 2067 ExecStart=/bin/sh -c if systemctl -q is-active gssproxy; then systemctl reload gssprox>
Process: 2056 ExecStart=/usr/sbin/rpc.nfsd (code=exited, status=0/SUCCESS)
Process: 2055 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 2067 (code=exited, status=0/SUCCESS)
Aug 04 21:31:04 nfsserver.jk.com systemd[1]: Starting NFS server and services...
Aug 04 21:31:04 nfsserver.jk.com systemd[1]: Started NFS server and services.
[root@nfsserver nfsdata]#
Firewall requirements
Services to be allowed = rpc-bind, nfs
[root@nfsserver /]# firewall-cmd --permanent --add-service=rpc-bind
success
[root@nfsserver /]# firewall-cmd --permanent --add-service=nfs
success
[root@nfsserver /]# firewall-cmd --reload
success
[root@nfsserver /]# firewall-cmd --list-all
public
target: default
icmp-block-inversion: no
interfaces:
sources:
services: cockpit dhcpv6-client mountd nfs rpc-bind ssh
ports:
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
[root@nfsserver /]#
Create a new directory on server that will be shared to client.
[root@nfsserver /]# mkdir nfsdata
[root@nfsserver /]#
Add nfs export details to the exports file.
[root@nfsserver /]# cat /etc/exports
/nfsdata 192.168.111.0/24(rw,no_root_squash,sync)
[root@nfsserver /]#
Export the mounts created on exports file.
[root@nfsserver /]# exportfs -rv
exporting 192.168.111.0/24:/nfsdata
[root@nfsserver /]#
Mount nfs directory on Client machine
Run showmount to see if we are getting the exported directory from client machine.
[root@nfsclient ~]# showmount -e 192.168.111.129
Export list for 192.168.111.129:
/nfsdata 192.168.111.0/24
[root@nfsclient ~]#
[root@nfsclient ~]# mount -t nfs 192.168.111.129:/nfsdata /mnt/data
[root@nfsclient ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 877M 0 877M 0% /dev
tmpfs 896M 0 896M 0% /dev/shm
tmpfs 896M 8.7M 887M 1% /run
tmpfs 896M 0 896M 0% /sys/fs/cgroup
/dev/mapper/cl_test-root 37G 1.7G 36G 5% /
/dev/sda1 1014M 195M 820M 20% /boot
tmpfs 180M 0 180M 0% /run/user/0
192.168.111.129:/nfsdata 37G 1.7G 36G 5% /mnt/data
Create a test file under the nfs mount in client
[root@nfsclient ~]# cd /mnt/data/
[root@nfsclient data]# touch testnew
[root@nfsclient data]# ls
testnew
[root@nfsclient data]# echo "This is a new test file" > testnew
[root@nfsclient data]# cat testnew
This is a new test file
[root@nfsclient data]#
Make mount point persistent over reboot.
To ensure mount point come up during reboot - add it to fstab as below,
[root@nfsclient ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Sat Jul 31 05:53:32 2021
#
# Accessible filesystems, by reference, are maintained under '/dev/disk/'.
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
#
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
#
/dev/mapper/cl_test-root / xfs defaults 0 0
UUID=1e6b0524-90a5-49d8-aff0-466bac22a3b4 /boot xfs defaults 0 0
/dev/mapper/cl_test-swap none swap defaults 0 0
192.168.111.129:/nfsdata /mnt/data nfs defaults 0 0
[root@nfsclient ~]#
Lets unmount and validate if it is getting mounted automatically.
[root@nfsclient ~]# umount /mnt/data
Now issue mount -a to see if it mounts automatically.
[root@nfsclient ~]# mount -a
[root@nfsclient ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 877M 0 877M 0% /dev
tmpfs 896M 0 896M 0% /dev/shm
tmpfs 896M 8.7M 887M 1% /run
tmpfs 896M 0 896M 0% /sys/fs/cgroup
/dev/mapper/cl_test-root 37G 1.7G 36G 5% /
/dev/sda1 1014M 195M 820M 20% /boot
tmpfs 180M 0 180M 0% /run/user/0
192.168.111.129:/nfsdata 37G 1.7G 36G 5% /mnt/data
[root@nfsclient ~]#
Verify if server showing newly created file and its content.
[root@nfsserver nfsdata]# cat testnew
This is a new test file
[root@nfsserver nfsdata]# pwd
/nfsdata
[root@nfsserver nfsdata]#
