服务器重装以后链接不上及解决措施

服务器从新安装以后，从别的机器链接不上，并报如下错误

[root@zabbix ~]# ssh 10.0.0.11

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

@    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

e1:aa:44:6a:d2:b0:9c:18:ce:1e:8a:dc:b5:b0:83:01.

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:12

RSA host key for 10.0.0.11 has changed and you have requested strict checking.

Host key verification failed.

这是Linux重装或则openssh-server重装引发的，执行如下命令便可
ssh-keygen -R IP  

[root@zabbix ~]# ssh-keygen -R 10.0.0.11

/root/.ssh/known_hosts updated.

Original contents retained as /root/.ssh/known_hosts.old

把IP换成你要连的服务器就能够了。

[root@zabbix ~]# ssh 10.0.0.11          

The authenticity of host '10.0.0.11 (10.0.0.11)' can't be established.

RSA key fingerprint is e1:aa:44:6a:d2:b0:9c:18:ce:1e:8a:dc:b5:b0:83:01.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '10.0.0.11' (RSA) to the list of known hosts.

root@10.0.0.11's password: 

Permission denied, please try again.

root@10.0.0.11's password: 

Last login: Sun Mar 20 03:36:01 2016 from 118.198.41.208

[root@afocus-123 ~]#