快捷ssh密钥登陆

1. 配置公钥和私钥

   ssh-keygen -t rsa -C '-C这里用来添加你的注释信息'

2. 传输公钥

   scp ~/.ssh/id_rsa.pub <用户名>@<ip地址>:/home/id_rsa.pub

3. 添加权限

   mkdir -p ~/.ssh && chmod 700 ~/.ssh 
   cat /home/id_rsa.pub >> ~/.ssh/authorized_keys 
   chmod 600 ~/.ssh/authorized_keys

4. 本地配置用户

   vim  ~/.ssh/config
   
   # 模版如下
   Host host_name
     HostName host_ip
     User root
     Port 22
     IdentityFile ~/.ssh/id_rsa

5. SSH服务端

   vim /etc/ssh/sshd_config

   将前面的注释符删掉才能生效。

   PermitRootLogin yes
   PubkeyAuthentication yes
   AuthorizedKeysFile .ssh/authorized_keys
   # 只接收公钥认证
   PasswordAuthentication no
   systemctl restart sshd

• #VPS