April 2016
Intermediate to advanced
364 pages
7h 54m
Japanese
Content preview from 初めてのAnsible
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295
A.4 sudo とエージェントフォワーディング
Host *
ForwardAgent yes
Ansible
でのみエージェントフォワーディングを有効にしたい場合には、
ansible.cfg
ファイル
を編集して、以下のように
ssh_connection
セクションのパラメータである
ssh_args
に値を追加
します。
[ssh_connection]
ssh_args = -o ControlMaster=auto -o ControlPersist=60s -o ForwardAgent=yes
ここでは短い
-A
の代わりに、もっと冗長な
-o ForwardAgent=yes
を使っていますが、動作に変
わりはありません。
ControlMaster
及び
ControlPersist
の設定は、
SSH
マルチプレキシングというパフォーマンス
の最適化のために必要です。これらはデフォルトでオンになっていますが、変数
ssh_args
をオー
バーライドした場合は、これらを明示的にしてしておかないと、パフォーマンスが向上しなくなっ
てしまいます。
SSH
マルチプレキシングについては、
9
章で議論しています。
A.4
sudo
とエージェントフォワーディング
エージェントフォワーディングを有効にしている場合、リモートマシンは環境変数の
SSH_
AUTH_SOCK
を設定します。この変数には、
UNIX
のドメインソケットへのパス（例えば
/tmp/ssh-
FShDVu5924/agent.5924
）が含まれます。ただし、
sudo ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.