主机的Hostkey值改变，ssh连接失败

mac机器

bogon:~ mac$ ssh -p **22 root@**.*********.org

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @

IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

Someone could be eavesdropping on you right now (man-in-the-middle attack)!

It is also possible that a host key has just been changed.

The fingerprint for the RSA key sent by the remote host is

SHA256:P73YH4G4Eedj7XrvYAmAst3/qtUS5E1WL8Dm8vUzDD8.

Please contact your system administrator.

Add correct host key in /Users/mac/.ssh/known_hosts to get rid of this message.

Offending RSA key in /Users/mac/.ssh/known_hosts:34

RSA host key for [**.*********.org]:**22 has changed and you have requested strict checking.

Host key verification failed.

根据提示的意思我们就可以知道在本地的known_hosts保存的主机hostkey记录改变了，该记录的主键可以是所连主机的域名，也可以是所连主机的IP地址。 

我们可以进入到该文档删除对应行，也可以直接用以下的命令直接把known_host

     本文转自phpervip 51CTO博客，原文链接：http://blog.51cto.com/phpervip/1972523，如需转载请自行联系原作者