ssh登录 The authenticity of host 192.168.0.xxx can't be established. 的问题

[ssh登录　The authenticity of host 192.168.0.xxx can't be established.　的问题]

scp免密码登录：[Linux基础 - scp免密码登陆进行远程文件同步]

执行scp一直是OK的，某天在本地生成了公钥私钥后，scp到某个IP报以下错误

The authenticity of host '192.168.233.137 (192.168.233.137)' can't be established.
ECDSA key fingerprint is SHA256:EsqTfeCJ34DnGV66REuRRPhoFwaLuee5wxFgEAZ8b9k.
Are you sure you want to continue connecting (yes/no)? 
Host key verification failed.
lost connection

方法一

即可不修改/etc/ssh/ssh_config文件的配置而解决此问题

ssh -o StrictHostKeyChecking=no 192.168.0.xxx　

输入密码
再次scp，正常输入密码，问题解决。

方法二：

修改/etc/ssh/ssh_config文件的配置，以后则不会再出现此问题

最后面添加：

StrictHostKeyChecking no

UserKnownHostsFile /dev/null