SSH "Are you sure you want to continue connecting"表示をなくす

2016 Dec. 10.

d.hatena.ne.jp/yohei-a/20100214/1266112027 より

sshクライアント側の /etc/ssh/ssh_config のStrictHostKeyChecking設定をnoにする。(ask/yes/noを設定できる)
  StrictHostKeyChecking no

$ man ssh_config
...
     StrictHostKeyChecking
             If this flag is set to ``yes'', ssh(1) will never automatically
             add host keys to the ~/.ssh/known_hosts file, and refuses to con-
             nect to hosts whose host key has changed.  This provides maximum
             protection against trojan horse attacks, though it can be annoy-
             ing when the /etc/ssh_known_hosts file is poorly maintained or
             when connections to new hosts are frequently made.  This option
             forces the user to manually add all new hosts.  If this flag is
             set to ``no'', ssh will automatically add new host keys to the
             user known hosts files.  If this flag is set to ``ask'', new host
             keys will be added to the user known host files only after the
             user has confirmed that is what they really want to do, and ssh
             will refuse to connect to hosts whose host key has changed.  The
             host keys of known hosts will be verified automatically in all
             cases.  The argument must be ``yes'', ``no'', or ``ask''.  The
             default is ``ask''.