table of Contents
NFS dependencies
NFS relies on RPC (remote procedure call) to
install the nfs-untils, rpcbind software package
System service: nfs, rpcbind
shared configuration file: /etc/exports
Install nfs-untils, rpcbind packages
[root@localhost ~]# yum -y install nfs -untils rpcbind
[root@localhost ~]# systemctl enable nfs
[root@localhost ~]# systemctl enable rpcbind
Set up a shared directory
[root@localhost ~]# mkdir -p /opt/wwwroot
[root@localhost ~]# vi /etc/exports
/opt/wwwroot //共享目录 192.168.7.0/24(rw,sync,no_root_squash) //括号中为权限
/var/ftp/pub 192.168.4.11(ro) 192.168.4.110(rw)
ro: read-only permissions rw: read-write permissions
sync: open services between the server and the client
no_root_squash: indicate that the server can be accessed as root
Start the NFS service program
View the NFS shared directory published by the machine
[root@localhost ~]# systemctl start rpcbind
[root@localhost ~]# systemctl start nfs
[root@localhost ~]# netstat -anpt| grep rpc
tcp 0 0 0.0.0.0:20048 0.0.0.0:* LISTEN 10508/rpc.mountd
tcp 0 0 0.0.0.0:52732 0.0.0.0:* LISTEN 10495/rpc.statd
tcp6 0 0 :::20048 :::* LISTEN 10508/rpc.mountd
tcp6 0 :::52732 :::* LISTEN 10495/rpc.statd
[root@localhost ~]# showmount -e
/opt/wwwroot 192.168.7.0/24
/var/ftp/pub 192.168.4.110, 192.168.4.11
Install the rpcbind package and start the rpcbind service
[root@localhost ~]# yum -y install rpcbind nfs-utils
[root@localhost ~]# systemctl enable rpcbind
[root@localhost ~]# systemctl start rpcbind
[root@localhost ~]# showmount -e 192.168.7.250 //客户机ip
Export list for 192.168.7.250:
/opt/wwwroot 192.168.7.0/24
/var/ftp/pub 192.168.4.110, 192.168.4.11
Mount the NFS shared directory manually
[root@localhost ~]# mount 192.168.7.250:/opt/wwwroot /var/www/html
[root@localhost ~]# tail -1 /etc/mtab
192.168.7.250:/opt/wwwroot /var/www/html nfs4
rw,relatime,vers=4.0,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,port=O,
timeo=600,retrans=2,sec=sys,clientaddr=192.168.7.21,local_lock=none,
addr=192.168.7.250 0 0
[root@localhost ~]# vi /var/www/html/index.html
Real Web Server Document
Fstab auto mount settings
[root@localhost ~]# vi /etc/fstab
...... //省略部分信息
192.168.7.250:/opt/wwwroot /var/www/html nfs defaults,_netdev 0 0 //设置需要网络
Force uninstall NFS
[root@localhost ~]# umount /mnt
umount:/mnt: device is busy
[root@localhost ~]# umount -lf /mnt
[root@localhost ~]#
Sketch of NFS working principle
