April 2016
Intermediate to advanced
364 pages
7h 54m
Japanese
Content preview from 初めてのAnsible
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270
13 章 Docker
13.7
データベースコンテナの起動
以下は、
PostgreSQL
を動作させるコンテナを起動させる部分です。
- name: start the postgres container
docker:
image: postgres:9.4
name: postgres
publish_all_ports: True
env:
POSTGRES_USER: "{{ database_user }}"
POSTGRES_PASSWORD: "{{ database_password }}"
Docker
コンテナの起動時には、イメージを指定しなければなりません。ローカルに
postgres:9.4
のイメージがインストールされていなければ、初回の実行時に
Docker
がダウンロー
ドしてくれます。ここでは
publish_all_ports
を指定しているので、
Docker
はコンテナで公開設
定されているポートを開きます。この場合は
5432
番ポートがそうです。
このコンテナは、環境変数で設定されるので、
PostgreSQL
のサービスにアクセスできるユー
ザー名とパスワードを渡します。
PostgreSQL
のイメージは、その名前をユーザーとして自動的に
データベースを作成してくれます。
13.8
データベースコンテナの
IP
アドレスと
マップされたポートの取得
PostgreSQL
のコンテナを起動する際には、コンテナのデータベースのポート（
5432
）をホス
ト上の既知のポートに明示的にマッピングすることができます（これは ...
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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.