秘钥登录成功ssh客户端执行:sudo -i passwdBash 两次确认密码执行以下指令允许root用户远程登录sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config; sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config; sudo service sshd restartBash 参考文章:http://www.xgiu.com/oraclecloud_root