CentOS 8
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NFS : Configure NFS Client
2019/10/04
 
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  2.0G     0  2.0G   0% /dev
tmpfs                        tmpfs     2.0G     0  2.0G   0% /dev/shm
tmpfs                        tmpfs     2.0G  8.5M  2.0G   1% /run
tmpfs                        tmpfs     2.0G     0  2.0G   0% /sys/fs/cgroup
/dev/mapper/cl-root          xfs        26G  1.8G   25G   7% /
/dev/vda1                    ext4      976M  113M  797M  13% /boot
tmpfs                        tmpfs     395M     0  395M   0% /run/user/0
dlp.srv.world:/home/nfsshare nfs4       26G  1.8G   25G   7% /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  1.8G   25G   7% /mnt
[2] To mount automatically when System starts, Configure setting in [/etc/fstab].
[root@node01 ~]#
vi /etc/fstab
/dev/mapper/cl-root     /                       xfs     defaults        0 0
UUID=38463a31-0178-4180-8f2c-cda6db28d42e /boot ext4    defaults        1 2
/dev/mapper/cl-swap     swap                    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 Oct  3 19:14 testfile.txt
-rw-r--r--. 1 root root  5 Oct  3 19:17 test.txt

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

/etc/auto.mount /mnt autofs rw,relatime,fd=17,pgrp=1602,timeout=300,minproto=5,maxproto=5,direct,pipe_ino=31743 0 0
dlp.srv.world:/home/nfsshare /mnt nfs4 rw,relatime,vers=4.2,rsize=524288,wsize=524288,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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