April 2016
Intermediate to advanced
364 pages
7h 54m
Japanese
Content preview from 初めてのAnsible
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265
13.5 その他のコンテナイメージ
例
13-3
local_settings.py
（続き）
TWITTER_CONSUMER_SECRET = os.environ.get("TWITTER_CONSUMER_SECRET ", "")
TWITTER_DEFAULT_QUERY = "from:ansiblebook"
例
13-3
のほとんどの設定が、
os.environ.get
を呼んで環境変数を参照していることに注目して
ください。
ほとんどの設定では、環境変数がない場合には意味のあるデフォルト値を使っていません。
1
つ
だけ例外なのが、
Memcached
のサーバーの場所です。
"LOCATION": os.environ.get("MEMCACHED_LOCATION", "memcached:11211"),
こうしたのは、コンテナリンキングを使っている場合には、このデフォルト値でうまくいくから
です。
Memcached
のコンテナを実行時に
memcached
という名前でリンクしたなら、
Docker
は自
動的に
memcached
というホスト名を
Memcached
コンテナの
IP
アドレスに名前解決してくれます。
例
13-4
は、
Gunicorn
の設定ファイルです。ポートとして
8000
番をハードコーディングしない
ようにすることもできますが、ここではユーザーが環境変数の
GUNICORN_PORT
を定義すれば、この
値をオーバーライドできるようにしてあります。
例
13-4
gunicorn.conf.py
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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.