Book Image

Practical Ansible 2

By : Daniel Oh, James Freeman, Fabio Alessandro Locati
Book Image

Practical Ansible 2

By: Daniel Oh, James Freeman, Fabio Alessandro Locati

Overview of this book

Ansible enables you to automate software provisioning, configuration management, and application roll-outs, and can be used as a deployment and orchestration tool. While Ansible provides simple yet powerful features to automate multi-layer environments using agentless communication, it can also solve other critical IT challenges, such as ensuring continuous integration and continuous deployment (CI/CD) with zero downtime. In this book, you'll work with Ansible 2.9 and learn to solve complex issues quickly with the help of task-oriented scenarios. You'll start by installing and configuring Ansible on Linux and macOS to automate monotonous and repetitive IT tasks and get to grips with concepts such as playbooks, inventories, and network modules. As you progress, you'll gain insight into the YAML syntax and learn how to port between Ansible versions. In addition to this, you'll also understand how Ansible enables you to orchestrate multi-layer environments such as networks, containers, and the cloud. By the end of this Ansible book, you'll be well - versed in writing playbooks and other related Ansible code to overcome just about all of your IT challenges, from infrastructure-as-code provisioning to application deployments, and even handling the mundane day-to-day maintenance tasks that take up so much valuable time.
Table of Contents (18 chapters)
Section 1: Learning the Fundamentals of Ansible
Section 2: Expanding the Capabilities of Ansible
Section 3: Using Ansible in an Enterprise

Creating custom plugins

In this section, we will take you through a practical guide on creating your own plugin. The example will be, by necessity, simple. However, hopefully, it will serve you well in guiding you in the principles and best practices of plugin development and give you a solid foundation to build your own more complex plugins. We will even show you how to integrate these with your own playbooks and, when you're ready, submit them to the official Ansible project for inclusion.

As we noted when we built our own module, Ansible is written in Python, and its plugins are no exception. As a result, you will need to write your plugin in Python; so, to get started on developing your own plugin, you will need to make sure you have Python and a few essential tools installed. If you already have Ansible running on your development machine, you probably have the required...