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Ansible Playbook Essentials

You're reading from   Ansible Playbook Essentials Design automation blueprints to manage your multitier infrastructure

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Product type Paperback
Published in Aug 2015
Publisher
ISBN-13 9781784398293
Length 168 pages
Edition 1st Edition
Tools
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Author (1):
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Gourav Shah Gourav Shah
Author Profile Icon Gourav Shah
Gourav Shah
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Toc

Table of Contents (14) Chapters Close

Preface Setting Up the Learning Environment 1. Blueprinting Your Infrastructure FREE CHAPTER 2. Going Modular with Ansible Roles 3. Separating Code and Data – Variables, Facts, and Templates 4. Bringing In Your Code – Custom Commands and Scripts 5. Controlling Execution Flow – Conditionals 6. Iterative Control Structures – Loops 7. Node Discovery and Clustering 8. Encrypting Data with Vault 9. Managing Environments 10. Orchestrating Infrastructure with Ansible A. References
Index

Creating a base role

In the previous chapter, we created a simple playbook with all plays written inside the same file. After discovering new and exciting information about roles, we will start refactoring our code and making it modular.

Refactoring our code – creating a base role

We have written two plays in the simple_playbook.yml file. We intended to run the first play on all hosts. This play has tasks to create users, install essential packages, and so on:

Refactoring our code – creating a base role

It's a good practice to combine all such essential tasks and create a base role. You can name it as base, common, essential, or whatever you please, but the concept remains the same. We will now move this code to the base role:

  1. Create the directory layout for the base role. Since we are only going to specify tasks, we just need one subdirectory inside the base:
    $ mkdir -p roles/base/tasks
    
  2. Create the main.yml file inside roles/base/tasks to specify tasks for the base role.
  3. Edit the main.yml file and add the following code:
    --...
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