ssh登录错误ECDSA host key for ip has changed解决方案
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当我们使用ssh root@ip登录Linux服务器时,服务器报错:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 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 isSHA256: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:6ECDSA host key for 47.74.190.156 has changed and you have requested strict checking.Host key verification failed.
如何解决?原因分析:
这是由于,ssh连接服务器时,如果之前连接过,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,由于我们的服务器做了更改,例如重装系统等操作,会导致本地保存的ssh信息失效,于是再次连接时就会出现上述错误。
另外,远程服务器的ssh服务被卸载重装或ssh相关数据(协议信息)被删除也会导致这个错误。
解决方案:
删除本地known_hosts里面的缓存信息即可。命令:ssh-keygen -R "你的远程服务器ip地址"
注意:R是大写!
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