SSH登录Linux服务器提示Host key verification failed.如何解决？新手站长网分享：

Host key verification failed.解决方法

ssh登录Linux服务器时提示如下：

aliyunbaike@aliyundeMacBook-Pro:~$ ssh root@47.74.190.156
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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 ECDSA key sent by the remote host is
SHA256:Ms+BRn93GbOO1fwP6g1O+UwSRFv9KIUMGeoHDt70OfQ.
Please contact your system administrator.
Add correct host key in /Users/aliyunbaike/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /Users/aliyunbaike/.ssh/known_hosts:6
ECDSA host key for 47.74.190.156 has changed and you have requested strict checking.
Host key verification failed.

报错：ECDSA host key for xx has changed and you have requested strict checking.
Host key verification failed.，这是由于之前连接过，ssh会默认保存该ip的连接协议信息，当我们再次访问此ip服务器时，ssh会自动匹配之前ssh保存的信息，如果我们对服务器信息作出更改后（例如：重装系统），就会导致本地保存的ssh信息失效，就会报错。

解决方法

解决方法：删除本地known_hosts保存的该服务器IP的ssh缓存信息即可。

执行命令：ssh-keygen -R "你的远程服务器ip地址"

删除本地的ssh keygen信息后，再次通过ssh root@ip登录应该就不会报错了。