Book Image

Learning Ansible 2 - Second Edition

Book Image

Learning Ansible 2 - Second Edition

Overview of this book

Ansible is an open source automation platform that assists organizations with tasks such as configuration management, application deployment, orchestration, and task automation. With Ansible, even complex tasks can be handled easier than before. In this book, you will learn about the fundamentals and practical aspects of Ansible 2 by diving deeply into topics such as installation (Linux, BSD, and Windows Support), playbooks, modules, various testing strategies, provisioning, deployment, and orchestration. In this book, you will get accustomed with the new features of Ansible 2 such as cleaner architecture, task blocks, playbook parsing, new execution strategy plugins, and modules. You will also learn how to integrate Ansible with cloud platforms such as AWS. The book ends with the enterprise versions of Ansible, Ansible Tower and Ansible Galaxy, where you will learn to interact Ansible with different OSes to speed up your work to previously unseen levels By the end of the book, you’ll able to leverage the Ansible parameters to create expeditious tasks for your organization by implementing the Ansible 2 techniques and paradigms.
Table of Contents (16 chapters)
Learning Ansible 2 Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

YAML


YAML, like many other data serialization languages (such as JSON), has very few, basic concepts:

  • Declarations

  • Lists

  • Associative arrays

A declaration is very similar to a variable in any other language, that is:

name: 'This is the name' 

To create a list, we will have to use '-':

- 'item1' 
- 'item2' 
- 'item3' 

YAML uses indentation to logically divide parents from children. So if we want to create associative arrays (also known as objects), we would just need to add an indentation:

item: 
  name: TheName 
  location: TheLocation 

Obviously, we can mix those together, that is:

people: 
  - name: Albert 
    number: +1000000000 
    country: USA 
  - name: David 
    number: +44000000000 
    country: UK 

Those are the basics of YAML. YAML can do much more, but for now this will be enough.