Book Image

Learning Ansible

By : Madhurranjan Mohaan, Ramesh Raithatha
Book Image

Learning Ansible

By: Madhurranjan Mohaan, Ramesh Raithatha

Overview of this book

<p>Automation includes provisioning new servers, making sure the servers adhere to their role and maintain the desired state from a configuration perspective, and orchestrating various actions across environments and deploying code as expected to all these servers. This is where Ansible steps in. It is secure, highly reliable, and minimalistic in nature. It automates configuration management, application deployment, and many other IT needs.</p> <p>Learning Ansible will equip you with the necessary skills to automate/improve your infrastructure from a configuration management perspective. You will also be able to use Ansible for one-click deployments, provisioning, and orchestrating your infrastructure.</p>

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Learning Ansible
Madhurranjan Mohaan | Ramesh Raithatha
Nov, 2014 | 308 pages
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Table of Contents (16 chapters)
Learning Ansible
Learning Ansible
Credits
Credits
About the Authors
About the Authors
Acknowledgments
Acknowledgments
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Getting Started with Ansible
Getting Started with Ansible
What is Ansible?
The Ansible architecture
Configuring Ansible
Configuration management
Working with playbooks
Variables and their types
Working with inventory files
Working with modules
Summary
2
Developing, Testing, and Releasing Playbooks
Developing, Testing, and Releasing Playbooks
Managing source code – Git
Developing a playbook
Testing a playbook
Functional testing in Ansible
The Serverspec tool
Handling environments
Summary
3
Taking Ansible to Production
Taking Ansible to Production
Working with the local_action feature
Working with conditionals
Working with loops
Working with include
Working with handlers
Working with roles
The Ansible template – Jinja filters
Security Management
Summary
4
Error Handling, Rollback, and Reporting
Error Handling, Rollback, and Reporting
Error handling and Rollback
Callback plugins
Monitoring and alerting
Summary
5
Working with Custom Modules
Working with Custom Modules
Using Python modules
Using Bash modules
Using Ruby modules
Testing modules
Summary
6
Provisioning
Provisioning
Provisioning a machine in the cloud
Docker provisioning
Dynamic Inventory
Summary
7
Deployment and Orchestration
Deployment and Orchestration
Deploying a sample Ruby on Rails application
Packaging
Canary deployment
Orchestration of a Tomcat deployment
Deploying Ansible pull
Summary
Ansible on Windows, Ansible Galaxy, and Ansible Tower
Ansible on Windows, Ansible Galaxy, and Ansible Tower
Ansible on Windows
Ansible Galaxy
Ansible Tower
Index
Index

Chapter 1. Getting Started with Ansible

 

We keep moving forward, opening new doors, and doing new things, because we're curious and curiosity keeps leading us down new paths.

 
 -- Walt Disney

If exploring new paths is what you like, then in this chapter, we're going to lead you down an exciting path with Ansible. Almost always, when one starts to invest time trying to learn a new tool or language, the expectation is to install a new tool, get a "Hello, world!" example out of the way, tweet about it (these days), and continue learning more features in the general direction of solving the problem at hand. The aim of this chapter is to make sure all of this (and more) is achieved.

In this chapter, we will cover the following topics:

  • What is Ansible?

  • The Ansible architecture

  • Configuring Ansible

  • Configuration management

  • Working with playbooks

  • Variables and their types

  • Working with inventory files

  • Working with modules

At the end of this chapter, you will be able to create basic playbooks and understand how to use Ansible.

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