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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 FREE CHAPTER 1. Blueprinting Your Infrastructure 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 an Nginx role

We will now create a separate role for Nginx and move the previous code that we wrote in the simple_playbook.yml file to it, as follows:

  1. Create the directory layout for the Nginx role:
    $ mkdir roles/nginx
    $ cd roles/nginx
    $ mkdir tasks meta files
    $ cd tasks
    
  2. Create the install.yml file inside roles/base. Move the Nginx-related tasks to it. It should look like this:
    ---
     - name: add official nginx repository
       apt_repository: repo='deb http://nginx.org/packages/ubuntu/ lucid nginx'
     - name: install nginx web server and ensure its at the latest version
       apt: name=nginx state=latest force=yes
  3. We will also create the service.yml file to manage the state of the Nginx daemon:
    ---
     - name: start nginx service
       service: name=nginx state=started
  4. We looked at the include directive earlier. We will use it to include both the install.yml and service.yml files in the main.yml file, as follows:
    ---
    # This is main tasks file for nginx role
     - include: install.yml
    - include...
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