云主机中的ssh 免密登录

A机：登录机(zhang@zhang)　　B机：云主机(root@deeplx，公网ip为103.202.106.123)

1.利用ssh-keygen指令在A机下生成公钥/私钥对，它在/home/zhang/.ssh下生成id_rsa和id_rsa.pub

zhang@zhang:~$ ssh-keygen

2.把A机下的id_rsa.pub复制到B机的.ssh里。

zhang@zhang:~$ scp .ssh/id_rsa.pub [email protected]:/root/.ssh/id_rsa.pub

3.把B机的id_rsa.pub写进/root/.ssh/authorized_keys里

root@deeplx:~# cat .ssh/id_rsa.pub >> .ssh/authorized_keys

4.在A机下远程访问云主机

zhang@zhang:~$ ssh [email protected]

现在A机可以无密码登录B机了

出现问题

Agent admitted failure to sign using the key

解决方法

使用 ssh-add 指令将私钥 加进来 （根据个人的密匙命名不同更改 id_rsa）# ssh-add   ~/.ssh/id_rsa

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参考

chenlb.iteye.com/blog/211809

blog.163.com/chen98_2006@126/blog/static/158584272007101862513886/