April 2016
Intermediate to advanced
364 pages
7h 54m
Japanese
Content preview from 初めてのAnsible
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3
1.3 Ansible の動作
から外していかなければならないような場合がそうです。
Ansible
はこういった処理にも向いてお
り、複数のサーバー上で処理を行えるようにはじめから設計されています。
Ansible
は、処理が行
われる順番を制御するための、シンプルで斬新なモデルを持っています。
最後に、新しいサーバーのプロビジョニングという言葉を聞くこともあるでしょう。
Amazon
EC2
のようなパブリッククラウドの世界では、これは新しい仮想マシンを起動することを指し
ます。
Ansible
はこの分野もカバーしており、
EC2
、
Azure
、
Digital Ocean
、
Google Compute
Engine
、
Linode
、
Rackspace
、そして
OpenStack API
をサポートする、あらゆるクラウドとやり
とりできる大量のモジュールがあります。
混乱しがちなことに、本章で後ほど議論する Vagrant では、設定管理をするツールのことを「プ
ロビジョナ」と呼んでいます。そのため、Vagrant にとっては Ansible はプロビジョナの一種な
のですが、筆者からすれば、仮想マシンの起動を受け持つ Vagrant こそがプロビジョナのように
思われます。
1.3
Ansible
の動作
図
1-1
は、サンプルのユースケースで
Ansible
が動作している様子です。
Stacy
というユーザー
が
Ansible
を使い、
3
つの
Ubuntu
ベースの
Web
サーバーで
nginx
が動作するように設定してい
ます。彼女は
webservers.yml ...
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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.