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

What is Docker (aka Docker Engine)?


Just in case you are new to technology as a whole or have not lived among humans for the past 2-3 years I will do my best to explain what Docker is.

Docker is an open source project similar to OpenStack and Ansible, which streamlines the deployment of applications inside the software containers.

Docker can at times be likened to other virtualization software but with much less overhead. Docker basically will add an abstraction layer between the container(s) and the bare metal Linux kernel, allowing the container to run on any Linux server and enabling process isolation. Once your application is deployed within the container, that container can then run on any Linux server where Docker is configured, thus adding a whole new level of portability, flexibility, and encapsulation to your application deployment process.

Docker is governed by a simple API, which is used to manage the containers created. The containers do not require an operating system, but rather...