进入谷歌云实例面板
切换到Roo用户
sudo -i
修改SSH配置文件/etc/ssh/sshd_config
vi /etc/ssh/sshd_config
修改PermitRootLogin
和PasswordAuthentication
为yes
# Authentication:
PermitRootLogin yes //默认为no,需要开启root用户访问改为yes
# Change to no to disable tunnelled clear text passwords
PasswordAuthentication yes //默认为no,改为yes开启密码登陆
给root用户设置密码
passwd root
重启SSH服务使修改生效
/etc/init.d/ssh restart