Book Image

KVM Virtualization Cookbook

By : Konstantin Ivanov
Book Image

KVM Virtualization Cookbook

By: Konstantin Ivanov

Overview of this book

Virtualization technologies such as KVM allow for better control over the available server resources, by deploying multiple virtual instances on the same physical host, or clusters of compute resources. With KVM it is possible to run various workloads in isolation with the hypervisor layer providing better tenant isolation and higher degree of security. This book will provide a deep dive into deploying KVM virtual machines using qemu and libvirt and will demonstrate practical examples on how to run, scale, monitor, migrate and backup such instances. You will also discover real production ready recipes on deploying KVM instances with OpenStack and how to programatically manage the life cycle of KVM virtual machines using Python. You will learn numerous tips and techniques which will help you deploy & plan the KVM infrastructure. Next, you will be introduced to the working of libvirt libraries and the iPython development environment. Finally, you will be able to tune your Linux kernel for high throughput and better performance. By the end of this book, you will gain all the knowledge needed to be an expert in working with the KVM virtualization infrastructure.
Table of Contents (15 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Installing and configuring the OpenStack Glance image service


The Glance image service provides an API that we can use to discover, register, and obtain images for virtual machines. When we later use Nova compute to build a new KVM instance, the Nova service will send a request to Glance to obtain the requested image type.

In this recipe, we are going to install Glance and register a new Ubuntu image.

Getting ready

For this recipe, we are going to need the following things:

  • An Ubuntu server with great virtualization capabilities
  • Access to the internet for package installation
  • A database server, a message queue, andmemcachedinstalled and configured, as described in thePreparing the host for the OpenStack deploymentrecipe
  • The Keystone service we deployed in the Installing and configuring the OpenStack Keystone identity service recipe

How to do it...

To install, configure, and register an image with Glance, follow the steps outlined here:

  1. Create the Glance database and user:
root@controller:~# mysql ...