Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By : James Freeman, Jesse Keating
Book Image

Mastering Ansible, 4th Edition - Fourth Edition

By: James Freeman, Jesse Keating

Overview of this book

Ansible is a modern, YAML-based automation tool (built on top of Python, one of the world’s most popular programming languages) with a massive and ever-growing user base. Its popularity and Python underpinnings make it essential learning for all in the DevOps space. This fourth edition of Mastering Ansible provides complete coverage of Ansible automation, from the design and architecture of the tool and basic automation with playbooks to writing and debugging your own Python-based extensions. You'll learn how to build automation workflows with Ansible’s extensive built-in library of collections, modules, and plugins. You'll then look at extending the modules and plugins with Python-based code and even build your own collections — ultimately learning how to give back to the Ansible community. By the end of this Ansible book, you'll be confident in all aspects of Ansible automation, from the fundamentals of playbook design to getting under the hood and extending and adapting Ansible to solve new automation challenges.
Table of Contents (18 chapters)
1
Section 1: Ansible Overview and Fundamentals
7
Section 2: Writing and Troubleshooting Ansible Playbooks
13
Section 3: Orchestration with Ansible

What this book covers

Chapter 1, The System Architecture and Design of Ansible, looks at the ins and outs of how Ansible goes about performing tasks on behalf of an engineer, how it is designed, and how to work with inventory and variables.

Chapter 2, Migrating from Earlier Ansible Versions, explains the architectural changes you will experience when you migrate from Ansible 2.x to any version from 3.x onward, how to work with Ansible collections, and also how to build your own—essential reading for anyone familiar with earlier Ansible versions.

Chapter 3, Protecting Your Secrets with Ansible, explores the tools available to encrypt data at rest and prevent secrets from being revealed at runtime.

Chapter 4, Ansible and Windows – Not Just for Linux, explores the integration of Ansible with Windows hosts to enable automation in cross-platform environments.

Chapter 5, Infrastructure Management for Enterprises with AWX, provides an overview of the powerful, open source graphical management framework for Ansible known as AWX, and how this might be employed in an enterprise environment.

Chapter 6, Unlocking the Power of Jinja2 Templates, states the varied uses of the Jinja2 templating engine within Ansible and discusses ways to make the most of its capabilities.

Chapter 7, Controlling Task Conditions, explains how to change the default behavior of Ansible to customize task error and change conditions.

Chapter 8, Composing Reusable Ansible Content with Roles, explains how to move beyond executing loosely organized tasks on hosts, and instead build clean, reusable, and self-contained code structures known as roles to achieve the same end result.

Chapter 9, Troubleshooting Ansible, takes you through the various methods that can be employed to examine, introspect, modify, and debug the operations of Ansible.

Chapter 10, Extending Ansible, covers the various ways in which new capabilities can be added to Ansible via modules, plugins, and inventory sources.

Chapter 11, Minimizing Downtime with Rolling Deployments, explains the common deployment and upgrade strategies to showcase the relevant Ansible features.

Chapter 12, Infrastructure Provisioning, examines cloud infrastructure providers and container systems for creating an infrastructure to manage.

Chapter 13, Network Automation, describes the advancements in the automation of network device configuration using Ansible.