服务端
 1.是否安装过
 rpm -qa nfs-utils rpcbbind
 2.安装 + 创建共享文件夹+更改文件夹用户和组+给文件夹赋权限
 yum install -y nfs-utils rpcbbind
 # mkdir -p /mnt/data/localnfs/
 # chown -R nfsnobody:nfsnobody /mnt/data/localnfs/
 # chmod 766 /mnt/data/localnfs/
 3.修改配置/etc/exports
 /mnt/data/localnfs 10.244.xx.0/24(rw,sync,all_squash)
 4.编辑/etc/sysconfig/nfs
 去掉端口MOUNTD_PORT=892前面的#
 5.开启防火墙端口 +重启防火墙
 # firewall-cmd --zone=public --add-port=111/udp --add-port=892/tcp --add-port=2049/tcp --permanent && firewall-cmd --reload && firewall-cmd --permanent --list-port
 6.启动rpcbind nfs服务
 # systemctl restart rpcbind && systemctl restart nfs
 # systemctl status rpcbind && systemctl status nfs
 # systemctl enable rpcbind && systemctl enable nfs
 7.查看本地可挂载共享盘
 # showmount -e localhost
 Export list for localhost:
 /mnt/data/localnfs 10.244.xx.0/24
 客户端
 1.检查是否安装nfs-utils
 rpm -qa nfs-utils
 2.安装nfs-utils
 yum install -y nfs-utils
 3.查看可挂载列表
 # showmount -e 10.244.xx.44
 Export list for 10.244.xx.44:
 /mnt/data/localnfs 10.244.xx.0/24
 4.挂载
 # mount -t nfs 10.244.xx.44:/mnt/data/localnfs/ /mnt/vnfs/
 5.设置开启自动挂载
 vim /etc/fstab
 添加
 10.244.xx.44:/mnt/data/localnfs/ /mnt/vnfs/ nfs defaults 0 0