linux中scp保存密钥信息的文件

linux中scp保存密钥信息的文件是~/.ssh/known_hosts

如果原来某个ip的密钥保存了，对方重新安装了，密钥就会改变，此时使用scp就会有这样的提示：

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

@    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

88:1e:7d:9c:df:9e:65:7e:8c:71:7f:89:a7:5b:dc:dc.

Please contact your system administrator.

Add correct host key in /root/.ssh/known_hosts to get rid of this message.

Offending ECDSA key in /root/.ssh/known_hosts:1

  remove with: ssh-keygen -f "/root/.ssh/known_hosts" -R 192.168.1.253

ECDSA host key for 192.168.1.253 has changed and you have requested strict checking.

Host key verification failed.

lost connection

只要删除原来保存的信息，就会重新保存正确的信息