Permanently added the RSA host key for IP address to the list of known hosts

123.59.85.105为域名coding.net的ip地址

猜测可能的原因是hexo命令deploy时不会检查~/.ssh/known_hosts文件

编辑config文件 ~/.ssh/config:

Host coding.net
      HostName 123.59.85.105
      IdentityFile {path_to_private_key}
      User {user_name}

此时提交就没有warning了