免密码登录的原理和配置

![image.png](https://cdn.nlark.com/yuque/0/2019/png/283236/1563800331941-fb28a419-e19d-4580-a988-f2208da92ca7.png#align=left&display=inline&height=431&name=image.png&originHeight=862&originWidth=1899&size=137373&status=done&width=949.5) 注：谁要登录谁产生 eg: A 要登录B A自己产生密钥对步骤：1: ssh-keygen -t rsa

2: ssh-copy-id -i .ssh/id_rsa.pub root@test111

文章作者: luochenxi

文章链接: https://luochenxi.github.io/2019/07/22/yuque/%E5%85%8D%E5%AF%86%E7%A0%81%E7%99%BB%E5%BD%95%E7%9A%84%E5%8E%9F%E7%90%86%E5%92%8C%E9%85%8D%E7%BD%AE/