ssh 登录不了解决方案

使用SSH登录某台机器，有时因为机器重新安装系统，会出现以下信息：

bash-3.2# ssh user@x.x.x.x
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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
98:d7:04:b6:35:0e:22:ea:35:a4:1f:70:0f:7c:b9:55.
Please contact your system administrator.
Add correct host key in /var/root/.ssh/known_hosts to get rid of this message.
Offending RSA key in /var/root/.ssh/known_hosts:3
RSA host key for x.x.x.x has changed and you have requested strict checking.
Host key verification failed.

solution: 删除提示信息中，对应的行数，例如上例，需要删除/home/cobyeah/.ssh/known_hosts文件中对应出现的ip(x.x.x.x)那条数据，然后就能登录了。