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

Chapter 6. Migrating Instances

In this chapter, we will cover the task of migrating instances using the native OpenStack capability built into the Compute service (Nova). As mentioned earlier, the existence of this functionality is unknown by many. Before this chapter is over, we will prove this capability by demonstrating how to manually migrate instances; as well as, review the steps required to automate this task and finally create a playbook with roles to fully automate instance migration to a specified compute node.

In this chapter, we will cover the following topics,

  • Instance migration

  • Automation considerations

  • Coding the playbook and roles

  • Playbook and role review