[root@node04 ~]# yum install -y nfs-utils rpcbind

[root@node04 ~]# vim /etc/exports 
/home/mysql/backup 192.168.40.0/24(rw,no_root_squash,sync)

[root@node04 ~]# exportfs -rv 
exporting 192.168.40.0/24:/home/mysql/backup

[root@node04 ~]# systemctl start rpcbind.service
[root@node04 ~]# systemctl status rpcbind.service

[root@node04 ~]# systemctl start nfs.service
[root@node04 ~]# systemctl status nfs.service

[root@node04 ~]# id mysql
uid=1000(mysql) gid=1000(mysql) groups=1000(mysql)


[root@node01 ~]# groupadd -g 1000 mysql
[root@node01 ~]# useradd -u 1000 -g mysql mysql

[root@node01 ~]# id mysql
uid=1000(mysql) gid=1000(mysql) groups=1000(mysql)

[root@node01 ~]# yum -y install nfs-utils

[root@node01 ~]# showmount -e 192.168.40.104
Export list for 192.168.40.104:
/home/mysql/backup 192.168.40.0/24

[root@node01 ~]# mount -t nfs 192.168.40.104:/home/mysql/backup /home/mysql/backup -o proto=tcp