CentOS Stream 8
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NFS : Configure NFS Client
2021/03/09
 
Configure NFS Client to mount NFS Share on NFS Client.
This example is based on the environment like follows.
+----------------------+          |          +----------------------+
| [    NFS Server    ] |10.0.0.30 | 10.0.0.51| [    NFS Client    ] |
|    dlp.srv.world     +----------+----------+   node01.srv.world   |
|                      |                     |                      |
+----------------------+                     +----------------------+

[1] Configure NFS Client.
[root@node01 ~]#
dnf -y install nfs-utils
[root@node01 ~]#
vi /etc/idmapd.conf
# line 5 : uncomment and change to your domain name

Domain =
srv.world
[root@node01 ~]#
mount -t nfs dlp.srv.world:/home/nfsshare /mnt

[root@node01 ~]#
df -hT

Filesystem                   Type      Size  Used Avail Use% Mounted on
devtmpfs                     devtmpfs  1.9G     0  1.9G   0% /dev
tmpfs                        tmpfs     1.9G     0  1.9G   0% /dev/shm
tmpfs                        tmpfs     1.9G  8.6M  1.9G   1% /run
tmpfs                        tmpfs     1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/mapper/cs-root          xfs        26G  2.3G   24G   9% /
/dev/vda1                    xfs      1014M  259M  756M  26% /boot
tmpfs                        tmpfs     374M     0  374M   0% /run/user/0
dlp.srv.world:/home/nfsshare nfs4       26G  2.3G   24G   9% /mnt
# NFS share is mounted

# if mount with NFSv3, add [-o vers=3] option

[root@node01 ~]#
mount -t nfs -o vers=3 dlp.srv.world:/home/nfsshare /mnt

[root@node01 ~]#
df -hT /mnt

Filesystem                   Type  Size  Used Avail Use% Mounted on
dlp.srv.world:/home/nfsshare nfs    26G  2.3G   24G   9% /mnt
[2] To mount automatically when System starts, Configure setting in [/etc/fstab].
[root@node01 ~]#
vi /etc/fstab
/dev/mapper/cs-root     /                       xfs     defaults        0 0
UUID=72e65d16-7d1a-40bc-9bc1-e45a8ba6d084 /boot xfs     defaults        0 0
/dev/mapper/cs-swap     none                    swap    defaults        0 0
# add to the end : set NFS share
dlp.srv.world:/home/nfsshare /mnt               nfs     defaults        0 0
[3] To mount dynamically when anyone access to NFS Share, Configure AutoFS.
[root@node01 ~]#
dnf -y install autofs
[root@node01 ~]#
vi /etc/auto.master
# add to the end

/-    /etc/auto.mount

[root@node01 ~]#
vi /etc/auto.mount
# create new : [mount point] [option] [location]

/mnt   -fstype=nfs,rw  dlp.srv.world:/home/nfsshare

[root@node01 ~]#
systemctl enable --now autofs

# move to the mount point to verify mounting

[root@node01 ~]#
cd /mnt

[root@node01 mnt]#
total 8
-rw-r--r--. 1 root root 10 Mar  3 19:14 testfile.txt
-rw-r--r--. 1 root root  5 Mar  3 19:17 test.txt

[root@node01 mnt]#
grep /mnt /proc/mounts

/etc/auto.mount /mnt autofs rw,relatime,fd=17,pgrp=2468,timeout=300,minproto=5,maxproto=5,direct,pipe_ino=33352 0 0
dlp.srv.world:/home/nfsshare /mnt nfs4 rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=10.0.0.51,local_lock=none,addr=10.0.0.30 0 0
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