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

Coding the playbook and roles


The playbook and role that we will now create will allow you to take a snapshot of all instances within a single tenant at one time. This distinct task was chosen to try to keep the role simple and not to overcomplicate the tasks. You can also create a role to snapshot or backup all the instances in all the tenants with the removal of just one parameter. Pretty awesome right? Well, send your thank you cards to Ansible for that.

At the beginning of the chapter, we reviewed the process of how to take instance backups and snapshots. It was a very simple two-step process. For the purpose of automating this task, we have to add an additional step to the process. That step will be to get the tenant ID for the tenant we plan to take the snapshot(s) from. So in the big picture, the steps will be. Step 1 is to record the tenant ID in which you wish to take instance snapshot(s) for. Step 2 is to list all the instance IDs from the tenant. Then finally, step 3 is to actually...