Book Image

OpenStack Administration with Ansible

By : Walter Bentley
Book Image

OpenStack Administration with Ansible

By: Walter Bentley

Overview of this book

Most organizations are seeking methods to improve business agility because they have realized just having a cloud is not enough. Being able to improve application deployments, reduce infrastructure downtime, and eliminate daily manual tasks can only be accomplished through some sort of automation. Packed with real-world OpenStack administrative tasks, this book will walk you through working examples and explain how these tasks can be automated using one of the most popular open source automation tools—Ansible. We will start with a brief overview of OpenStack and Ansible and highlight some best practices. Each chapter will provide an introduction to handling various Cloud Operator administration tasks such as creating multiple users/tenants, setting up Multi-Tenant Isolation, customizing your clouds quotas, taking instance snapshots, evacuating compute hosts for maintenance, and running cloud health checks, and a step-by-step tutorial on how to automate these tasks with Ansible.
Table of Contents (18 chapters)
OpenStack Administration with Ansible
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Automation considerations


Automating this task was pretty straightforward and did not require any new framework decisions. All the other automation decisions we reviewed previously were carried over.

There is one area worth highlighting that you may also face when automating OpenStack tasks using the CLI. The default output of the CLI is pretty-printed (using the Python prettytable module), which at times is not so pretty when you want to sort through the output. Some CLI commands give the option of specific formatting, but in the event the command does not allow it, you have other options. This is where again the awk command becomes your very close ally. You will note that in the next section the specific use of the awk command is to filter out the values that we need for the next task within the role.

It feels like we are ready to proceed with creating our next playbook and role.