RSA host key for xxx has changed and you have requested strict checking.

ssh连接远程服务器的时候有如下提示

RSA host key for x.x.x.x has changed and you have requested strict checking.

Host key verification failed.

出现这种问题的原因一般是：目标服务器重装以后，key发生变化。

解决办法

ssh-keygen -R 目标服务器IP或网址    执行完命令以后重新添加。

输入上面的host key for x.x.x.x 地方的Ip或者域名。