两条命令在Linux主机之间建立信任关系
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa //生成当前用户密钥
ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.19.203 //拷贝到远程机器上面
ssh root@192.168.19.203 //测试
#----------All efforts I have paid today...
ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa //生成当前用户密钥
ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.19.203 //拷贝到远程机器上面
ssh root@192.168.19.203 //测试