主机之间免密操作

文档来自:

https://cloud.tencent.com/developer/article/1039917

操作步骤

1. 修改ssh配置

   # 每台linux主机修改配置文件/etc/ssh/sshd_config
   $ vi /etc/ssh/sshd_config
   
   #启用这三项配置，即去掉这三项的注释
   RSAAuthentication yes
   PubkeyAuthentication yes
   AuthorizedKeysFile      .ssh/authorized_keys
   
   

2. 生成公私钥

   #在源主机上执行 生成公私钥对
   $ ssh-keygen -t rsa -P ''
   
   
   # 查看生成的公私钥
   $ cd /root/.ssh/
   
   
   id_rsa: 私钥
   id_rsa.pub: 公钥
   

3. 安装到目标主机

   $ scp /root/.ssh/id_rsa.pub [email protected]:/root/.ssh/;
   $ scp /root/.ssh/authorized_keys [email protected]:/root/.ssh/;
   

4. 实验免密登录

   scp /root/.ssh/authorized_keys [email protected]:/root/.ssh/;
   ssh [email protected];