错误信息：
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 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 isSHA256:6zKiuPSPE90dB6PNCj1fICgA1DTrTxPFiVbl82+sS0E.Please contact your system administrator.Add correct host key in /c/Users/xuliugen/.ssh/known_hosts to get rid of this message.Offending RSA key in /c/Users/xuliugen/.ssh/known_hosts:4RSA host key for 119.19.19.19 has changed and you have requested strict checking.Host key verification failed.
如下图所示：
解决方式
1.在客户端执行下述指令
#vi ~/.ssh/known_hosts
2.例如我的机子IP地址为：119.19.19.19
则把里面与所要连接IP(119.19.19.19)相关的内容删掉即可.
