Centos7官网qcow2镜像的使用方法

创建云主机使的启动脚本，如下。该脚本使得我们可以从controller节点无密码登陆到云主机

#!/bin/sh
mv /root/.ssh/authorized_keys /root/.ssh/authorized_keys.old
cp  /home/centos/.ssh/authorized_keys /root/.ssh/

下面脚本开启密码登陆云主机

#!/bin/sh
sed -i 's/PasswordAuthentication no/PasswordAuthentication yes/g' /etc/ssh/sshd_config
systemctl restart sshd