共享节点：
# systemctl start nfs-server
# firewall-cmd --permanent --add-service=rpc-bind
# firewall-cmd --permanent --add-service=mountd
# firewall-cmd --permanent --add-service=nfs
# firewall-cmd --reload
# vi /etc/exports
/share *(rw,no_root_squash)
#exportfs -ar
#showmount -e 192.168.*.*
挂载节点
mount -t nfs 192.168.*.*:/share /share
