WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED

 

    今天新装一台CentOS5.5启动后用ubuntu连接不上，提示如下，但在192.168.1.140本地查看网络全部正常，发现不到什么问题，网上也没有相关资料，清空了ubuntu下的.ssh/known_hosts仍然没有解决。

    后来发现在局域网内有同样IP在上网，才想起原来是有IP冲突，后来CentOS换了一个ip地址后没有出现这个问题了。

 

20101220补充：问题依旧i出现，网上的方法是按照提示清空/root/.ssh/known_hosts公钥文件，但我删除对应IP公钥问题就解决了：

                                       [root@ubuntu10] ssh-keygen -R 192.168.1.140

  /root/.ssh/known_hosts

 

wubolu@wubolu-linux:~$ sudo ssh 192.168.1.140

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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
ca:fc:3b:38:39:f4:43:fb:9a:c2:4f:46:8a:3d:46:ba.
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:8
RSA host key for 192.168.1.140 has changed and you have requested strict checking.
Host key verification failed.