## [root@server_being_mounted ~ ] yum install nfs-utils
## [root@server_being_mounted ~ ] systemctl status rpcbind ### if not started, then start and enable
[root@server_being_mounted ~ ] systemctl enable --now nfs-server
[root@server_being_mounted ~ ] vi /etc/exports
/destfolder 192.168.1.100(rw,sync) ### 192.168.1.100 is the server_to_mount
[root@server_being_mounted ~ ] exportfs -ra
## [root@server_being_mounted ~ ] exportfs -v
[root@server_to_mount ~ ] mount -t nfs 192.168.1.101:/destfoler /sourcefolder ### 192.168.1.101 is the server_being_mounted
/etc/exports parameter
(1) ro read-only to the shared folder
(2) rw read-write to the shared folder
(3) root_squash when using root to access to the shared folder, root user will map to the anonymous user
(4) no_root_squash when using root to access to the shared folder, root user will map to the root user
(5) all_squash when using any user to access to the shared folder, any user will map to the anonymous user
(6) Anonuid when using any user to access to the shared folder, any user will map to the specified user id
(7) Anongid when using any user to access to the shared folder, any user will map to the specified usergroup id
(8) sync data will be synchronously written to the memory and disk
(9) async data will be written to the memory first, then disk
(10) insecure allow unauthorized access from this machine
(11) subtree_check when sharing subdirectory under parent like /usr/bin, check parent directory permission
(12) no_subtree_check when sharing subdirectory under parent like /usr/bin, do not check parent directory permission
(13) wdelay wait in order when multiple users are trying to write data
(14) no_wdelay do not wait when multiple users are trying to write data
(15) hide do not share subdirectories
(16) no_hide share subdirectories
- bg: if first mount request failed, it will retry mounting in background, default retry interval is every 2 min and retry for a week.
- _netdev: delay mounting until network service is active.
[root@server_to_mount ~ ] vi /etc/fstab
...
192.168.1.100:/volume1/DB_SERVER_BACKUP /backup nfs defaults,bg,_netdev 0 0
...