February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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343
レシピ 10.2 Upstart で自動的に再起動する
/etc/init/sitedownmon.conf
start on stopped anotherserver PROCESS=respawn
監視対象として
anotherserver
を追加しました。
ミニレシピ
10.2.2
forever
モジュールで自動的に再起動する
Upstart
よりもシンプルな代替手段として、
forever
†
という
Node
モジュールがあります。実
行コマンドを持つモジュールなので、グローバルインストールを行います。
% npm -g install forever
forever
を使ってサーバを以下のように起動します。
% forever server.js
サイトにアクセスすると、以下のようにコンソールに出力されます。
warn: Forever detected script exited with code: 1
warn: Forever restarting script for 1 time
しかし、サイトには続けてアクセスすることができます（ただし、アクセスのたびにクラッシュ
して再起動します）。
リモートサーバでこの
Web
サイトをホスティングする場合は、
ssh
でログインし、
forever
を
インストールして、以下のコマンドでサーバを起動します。
% forever start server.js
forever
コマンドに
start
オプションを付与すると、バックグラウンドでプロセスを起動します。
この方法は
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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.
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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.