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Puppet Cookbook - Third Edition

Puppet Cookbook - Third Edition

By : Thomas Uphill, John Arundel
5 (2)
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Puppet Cookbook - Third Edition

Puppet Cookbook - Third Edition

5 (2)
By: Thomas Uphill, John Arundel

Overview of this book

This book is for anyone who builds and administers servers, especially in a web operations context. It requires some experience of Linux systems administration, including familiarity with the command line, file system, and text editing. No programming experience is required.
Table of Contents (12 chapters)
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11
Index

Using run stages


A common requirement is to apply a certain group of resources before other groups (for example, installing a package repository or a custom Ruby version), or after others (for example, deploying an application once its dependencies are installed). Puppet's run stages feature allows you to do this.

By default, all resources in your manifest are applied in a single stage named main. If you need a resource to be applied before all others, you can assign it to a new run stage that is specified to come before main. Similarly, you could define a run stage that comes after main. In fact, you can define as many run stages as you need and tell Puppet which order they should be applied in.

In this example, we'll use stages to ensure one class is applied first and another last.

How to do it…

Here are the steps to create an example of using run stages:

  1. Create the file modules/admin/manifests/stages.pp with the following contents:

      class admin::stages {
        stage { 'first': before => Stage...

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