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)
1
Section 1: Learning the Fundamentals of Ansible
6
Section 2: Expanding the Capabilities of Ansible
11
Section 3: Using Ansible in an Enterprise

Summary

AWX and Ansible Tower are powerful, complementary tools that powerfully support the use of Ansible in an enterprise or team-based environment. They can help secure credentials that you would otherwise have to distribute widely, audit the history of playbook runs, and enforce the version control of playbooks. The web-based user interface of these tools creates a low barrier for entry for end users, meaning playbook runs can easily be delegated to teams who otherwise have little knowledge of Ansible (as long as suitable escalation paths are put in place should problems arise). In short, when implementing Ansible in a corporate setting, its usage should not be considered complete without the addition of Ansible Tower or AWX.

In this chapter, you learned how to install AWX on your Linux host, as well as the necessary steps to run your very first playbook from AWX. You also...