ssh的一个小问题解决

sunjiangang-ok

今天一开机登录到另一台机子的时候，出现了如下问题：

1. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
   
2. @ WARNING: REMOTE HOST IDENTIFICATION HAS @
   
3. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
   
4. IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING
   
5. Someone could be eavesdropping on you right now (man-in-the-middle attack)!
   
6. It is also possible that the RSA host key has just been changed.
   
7. The fingerprint for the RSA key sent by the remote host is
   
8. 4e:d2:94:d9:ce:58:2e:9e:93:7b:33:49:bb:77:e1:dc.
   
9. Please contact your system administrator.
   
10. Add correct host key in /home/sunny/.ssh/known_hosts to get rid of this message.
    
11. Offending key in /home/sunny/.ssh/known_hosts:6
    
12. RSA host key for 192.168.3.118 has changed and you have requested strict checking.
    
13. Host key verification failed.

经过核对之后，自已的操作没有问题。仔细一看英文的错误，然后百度了一下，这个问题很好解决，把~.ssh/known_hosts内容清空一下，重新登录即可。

但这个是为什么呢？