Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Ansible Playbook Essentials

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

Arrow left icon
Product type Paperback
Published in Aug 2015
Publisher
ISBN-13 9781784398293
Length 168 pages
Edition 1st Edition
Tools
Arrow right icon
Author (1):
Arrow left icon
Gourav Shah Gourav Shah
Author Profile Icon Gourav Shah
Gourav Shah
Arrow right icon
View More author details
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

Running playbooks with roles

Let's now apply the refactored code to our hosts. We are going to launch only the site-wide playbook, that is, the site.yml file and then rely on the include statements and roles to do the magic:

$ ansible-playbook -i customhosts site.yml

Let's take a look at the following screenshot:

Running playbooks with roles

In addition to the output we saw last time, there are some new messages this time. Let's analyze those:

  • Before and after, roles are applied, pre-tasks and post-tasks get triggered; this prints messages using the shell module.
  • We now have the code to copy to the config and .html file for our Nginx web server.
  • We also see that the handler triggers an Nginx service restart. This is due to the change in the state for the configuration file, which triggers the handler.

Tip

Did you notice that tasks in the base role also get triggered, even when we have not mentioned the base role in the www playbook? This is where meta information is useful. Remember we had specified a dependency...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at AU $24.99/month. Cancel anytime