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sshによる多段階接続のconfig

Last updated at Posted at 2018-11-06

N番煎じだが、どこで見かけたか忘れるので自身の備忘録。

前提条件

  • Local -> Remote01 -> Remote02 こういう接続をssh Remote02のコマンド一発でしたい。
  • Local -> Remote01Remote01 -> Remote02の接続が鍵認証で出来ること。
  • 接続には鍵認証を利用し、秘密鍵はLocalにsecret_key01secret_key02として、~/.ssh下に保存されているとする。
  • Local -> Remote01secret_key01
  • Remote01 -> Remote02secret_key02

configファイルの記述

ProxyCommandを組み合わせると実現できる。.ssh/configに次のように追記する。

Host Remote01
    HostName example01.com  # remote01 のIP/Host name
    IdentityFile ~/.ssh/secret_key01
    User user01

Host Remote02
    HostName example02.com  # remote02 のIP/Host name
    IdentityFile ~/.ssh/secret_key02
    User user02
    ProxyCommand ssh Remote01 -W %h:%p
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