1.修改ubuntu的root密码
sudo passwd root
2.vim安装
vim apt install vim
3.按照ssh服务
sudo apt update
sudo apt install openssh-server
启动ssh
sudo systemctl start ssh
开机自启
sudo systemctl enable ssh
防火墙设置(可选)
sudo ufw allow ssh
开启root登录
sudo vim /etc/ssh/sshd_config
PermitRootLogin prohibit-password 找到这个,去掉前面的#,proht...改为yes
重启ssh
sudo systemctl restart ssh