goole cloud shh登录命令修改

1.先切换root
sudo -i
2.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

3.给root用户设置密码
passwd root

4.重启SSH服务使修改生效
service sshd restart