1.问题

输入ssh root@ 主机时

Alt text

重点是下面两句

ECDSA host key for 119.23.76.19 has changed and you have requested strict checking.
Host key verification failed.

目标主机密钥已更改，验证失败。

2.解决方案

直接上图

ssh-keygen -R 192.168.233.14 #目标主机IP
ssh root@192.168.233.14

Alt text