新建的虚拟机，自动分配的ip为之前删除的虚拟机，在连接新创建的虚拟机时，报错如下：

[centos@svnserver ~]$ ssh -i ssh-key.ssh-key   centos@10.10.10.45
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    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:【*********】
Please contact your system administrator.
Add correct host key in /home/centos/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/centos/.ssh/known_hosts:2
ECDSA host key for 【IPAddress】 has changed and you have requested strict checking.
Host key verification failed.

原因：

       因为新创建的虚拟机的ssh信息 和本地机的ssh信息对不上，因此更新本地机的ssh缓存信息即可

执行：

      ssh-keygen  -R 【IPAddress】

得到：

# Host 【IPAddress】 found: line 2
/home/centos/.ssh/known_hosts updated.
Original contents retained as /home/centos/.ssh/known_hosts.old

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