ssh-keygen

ssh-keygen

生成 key，默认在位置 .ssh

ssh-keygen -C 'vultr'

将 key 复制到服务器

ssh-copy-id -i ~/.ssh/keyname.pub root@hostname

ssh-copy-id root@45.76.163.216

ssh-copy-id -i ~/.ssh/vultr.pub root@45.76.163.216

在本地编辑 ssh config，可以直接用前面命名的服务器名来登陆

vim ~/.ssh/config

Host vultr

Hostname hostname

User root

Port 22

IdentityFile ~/.ssh/vultr

若出现Host key verification failed

ssh-keygen -R hostname

ssh root@45.77.27.58

ssh-keygen -R 45.77.27.58