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RubyのNet::SSHでknown_hostsを無視する

Last updated at Posted at 2014-05-02

dockerのコンテナをserverspecを使ってNet::SSH経由のテストしたりすると ~/.ssh/known_hosts が肥大化したりverifyに失敗したりする。閉じた環境に限定されているので全体のknown_hostsを見なくてもいいだろうとNet::SSHのオプションに追加してみる。

# ...
options = {
  paranoid: false,
  user_known_hosts_file: '/dev/null',
}
Net::SSH.start(host, user, options)
  • paranoid: false は -o StrictHostKeyChecking=no
  • user_known_hosts_file: は -o UserKnownHostsFile=/dev/null

相当(のはず)。

参考:

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