April 2016
Intermediate to advanced
364 pages
7h 54m
Japanese
Content preview from 初めてのAnsible
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194
10 章 カスタムモジュール
10.7.1
引数のパース
AnsibleModule
による引数のパース処理の様子は、サンプルを見るのがわかりやすいでしょう。
このモジュールは、次のように呼ばれることを思い出してください。
- name: check if host can reach the database server
can_reach: host=db.example.com port=5432 timeout=1
パラメータの
host
及び
port
は必須であり、
timeout
はオプションで、デフォルト値は
3
秒だと
しましょう。
AnsibleModule
は、
argument_spec
を渡してインスタンス化します。
argument_spec
は辞書であ
り、キーはパラメータ名で、値はそのパラメータに関する情報を含む辞書になっています。
module = AnsibleModule(
argument_spec=dict(
...
この例では、必要な引数として
host
を宣言しています。このモジュールがタスク中で使われた
ときに、この引数が渡されなければ、
Ansible
はエラーを報告します。
host=dict(required=True),
timeout
は、オプションの変数です。
Ansible
は、特に指定されていなければ、引数を文字列と
して扱います。
timeout
は整数なので、型を
int
と指定し、
Ansible
に自動的に
Python
の数値に
変換してもらいます。
timeout
が指定されなかった場合、このモジュールはその値を３と見なしま ...
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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.