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

Configuring Cumulus Networks switches with Ansible

Cumulus Linux (created by Cumulus Networks, which was acquired by NVIDIA) is an open source network operating system that can run on a variety of bare metal switches, offering an open source approach to data center networking. This is a great leap forward for network design and a significant shift away from the proprietary models of the past. They offer a free version of their software that will run on the hypervisor of your choice for test and evaluation purposes called Cumulus VX. The examples in this section are based on Cumulus VX version 4.4.0.

Defining our inventory

A quick bit of research shows us that Cumulus VX will use the standard SSH transport method of Ansible. Since it is a Linux distribution designed specifically to run on switch hardware, it is capable of running in remote execution mode, so it does not require the ansible.netcommon.network_cli protocol. Furthermore, just one module has been defined...