Book Image

OpenStack Administration with Ansible 2 - Second Edition

Book Image

OpenStack Administration with Ansible 2 - Second Edition

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. We start with a brief overview of OpenStack and Ansible 2 and highlight some best practices. Each chapter will provide an introduction to handling various Cloud Operator administration tasks such as managing containers within your cloud; setting up/utilizing open source packages for monitoring; creating multiple users/tenants; taking instance snapshots; and customizing your cloud to run multiple active regions. Each chapter will also supply a step-by-step tutorial on how to automate these tasks with Ansible 2. 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 on the market today.
Table of Contents (17 chapters)
OpenStack Administration with Ansible 2 Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Defining and creating quotas


What are quotas? Within OpenStack, you can set quotas on a tenant/project or user level in order to restrict the resource consumption allowed. The Compute service (Nova) manages the quota values and also enforces them. As a cloud operator, this is another important feature OpenStack offers. Quotas allow you to control the cloud's overall system capacity. You may ask, why not just set up one default quota and let every project use it? We will step through why this approach may or may not work based on the particular use case. It is also worth mentioning that the Block Storage service (Cinder) also has the capability of setting quotas.

Since we now know that you can set quotas, let's review what resources can be restricted and what the default values are. The following table describes the type of quotas that can be set:

Quota Name

Defines the number of

Instances

Instances allowed in each project

Cores

Instance cores allowed in each project

RAM (MB)

RAM...