Ubuntu服务器版开启root账户SSH登录
启用账户
sudo passwd root
sudo passwd -u root
su - root
开启ssh登录
sudo nano /etc/ssh/sshd_config
将#PermitRootLogin prohibit-password 改成：PermitRootLogin yes
sudo systemctl restart ssh
sudo passwd root
sudo passwd -u root
su - root
sudo nano /etc/ssh/sshd_config
sudo systemctl restart ssh