ssh The authenticity of host '172.18.19.XXX (172.18.19.XXX)' can't be established.

用ssh登录一个机器（换过ip地址），提示输入yes后，屏幕不断出现y，只有按ctrl + c结束 

错误是：The authenticity of host '172.18.19.XXX (172.18.19.XXX)' can't be established.

RSA key fingerprint is 5b:c2:e0:55:ea:9e:1e:55:6b:b4:66:1e:4e:b7:3b:e5.

Are you sure you want to continue connecting (yes/no)? yes

 

解决方案：

 

执行ssh  -o StrictHostKeyChecking=no  172.18.19.XXX　就OK