March 2017
Intermediate to advanced
352 pages
9h 3m
Japanese
Content preview from Infrastructure as Code ―クラウドにおけるサーバ管理の原則とプラクティス
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8.5
構成定義管理のプラクティス
143
プロビジョニングスクリプトは、アプリを起動する前に必要なあらゆる初期化処理を行
う
SERVICEID-setup.sh
スクリプトも実行する。最後に、プロビジョニングスクリプトは、
java -jar
/app/SERVICEID/SERVICEID-VERSION.jar
server
コマンドを実行して
アプリを起動する
/etc/init.d/SERVICENAME
というサービス起動スクリプトを作成して有効
にする。
デベロッパたちは、この標準に従ってアプリを作れば、既存のインフラ、ツールセットのも
とでシームレスに動作するということを当てにして仕事をすることができる。
8.4.5
サーバーアップデートのトランザクション化
サーバーアップデートのトランザクション化も将来性を感じられるアプローチだ。このアプローチで
は、アトミックなトランザクションとして、サーバー上のすべてのパッケージを定義されたバージョン
にアップデートすることをサポートするパッケージ管理ツールを使う。アップデートのなかのどれかが
失敗すれば、アップデート全体をロールバックする。こうすれば、少なくともシステムパッケージに関
する限り、サーバーの構成 /設定がテストされていない状態になることを確実に防げる。サーバーは、
新しい完全にテストされた状態になるか、以前テストされているはずの既存の状態に戻されるかにな
る
*
。
このアプローチには、イミュータブルサーバーとの共通点が多数あり、コンテナと共通
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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.