SSH串連失敗：Host key verification failed

最近更換了一部分伺服器，一部分沒有更換，在原來的機器上ssh登入其他機器的時候被拒了。

執行： SSH xxx.xxx.xxx.xxx

結果：

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
a1:ee:9e:76:32:ab:79:83:21:c1:d1:eb:35:44:fe:b4.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:13
RSA host key for 10.0.0.10 has changed and you have requested strict checking.
Host key verification failed.

 

解決辦法就是直接刪除/root/.ssh/known_hosts這個檔案。