容器部署的时候需要共享存储，测试环境如果客户不给分配共享存储，可以在其中一台机器上挂载一块空间大点的硬盘，作为NFS服务器共享存储（以下为客户机器没有外网且没有光驱的操作，有外网或者有光驱步骤更少一点）
1、配置本地镜像yum源
镜像上传到 /tmp
mount -t iso9660 -o loop /tmp/CentOS-7-x86_64-DVD-1908.iso /mnt
cd /etc/yum.repo.d/
vi bendi.repo
[bendi]
name=bendi
baseurl=file:///mnt/
gpgcheck=0
groupcheck=1
gpgkey=
yum makecache
2、安装nfs
yum -y install nfs-utils
mkdir -p /var/export/nfs
echo "/var/export/nfs *(rw,async,no_root_squash,no_subtree_check)" >> /etc/exports #将/var/export/nfs目录共享给所有用户
exportfs -a #让配置文件生效
echo 'LOCKD_TCPPORT=32803' >> /etc/sysconfig/nfs
echo 'LOCKD_UDPPORT=32769' >> /etc/sysconfig/nfs
echo 'MOUNTD_PORT=892' >> /etc/sysconfig/nfs
echo 'RQUOTAD_PORT=875' >> /etc/sysconfig/nfs
echo 'STATD_PORT=662' >> /etc/sysconfig/nfs
echo 'STATD_OUTGOING_PORT=2020' >> /etc/sysconfig/nfs
#关闭防火墙以免用户连接被防火墙拒绝
setenforce 0
systemctl stop firewalld.service
systemctl disable firewalld.service
#启用nfs服务并设置开机自启动
systemctl start rpcbind.service
systemctl start nfs-server.service
systemctl enable rpcbind.service
systemctl enable nfs-server.service
3、客户机链接nfs服务器需要安装nfs客户端
yum install nfs-utils
systemctl start rpcbind.service
systemctl start nfs-server.service
systemctl enable rpcbind.service
systemctl enable nfs-server.service
4、挂载nfs
mkdir /mnt/test
mount nfs-server-ip:/var/export/nfs /mnt/test #nfs-server-ip为nfs服务器的IP地址
df -h #查看挂载是否成功
