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)
Section 1: Ansible Overview and Fundamentals
Section 2: Writing and Troubleshooting Ansible Playbooks
Section 3: Orchestration with Ansible

Chapter 9: Troubleshooting Ansible

Ansible is beautifully simple, yet incredibly powerful. The simplicity of Ansible means that its operation is easy to understand and follow. However, even with the simplest and most user-friendly of systems, things do go wrong from time to time—perhaps as we are learning to write our own code (playbooks, roles, modules, or otherwise) and need to debug it, or, more rarely, when we might have found a bug in a released version of a collection or ansible-core.

Being able to understand and follow the operation of Ansible is critically important when debugging unexpected behavior, wherever it may arise. Ansible provides a number of options and tools to help you troubleshoot the operation of its core components, as well as your own playbook code. We will explore these in detail in this chapter, with the goal of empowering you to troubleshoot your own Ansible work with confidence.

Specifically, in this chapter, we will look at the following...