Use centos7.1804. Qcow2 cloud images created instance can use SSH centos7 system login, but use centos6 version SSH login failed, always use secureCRT tool such as login error, login is unsuccessful, an error message "error: Received disconnect from XXXX port 58874:9: The server 's host key failed to verify. This could mean that The server you are connected to is impersonating The server it claims to be. A connection could not be established"


This is my newly created instance on it, no SSH or use CRT tool such as link before the instance, is the first connection log in this instance, there is no ~/. SSH/known_hosts issues, is there a friend met this problem?