KVM virtualization cookbook : learn how to effectively use KVM in production / Konstantin Ivanov.

Format:

Book

Author/Creator:

Ivanov, Konstantin, author.

Language:

English

Subjects (All):

Virtual computer systems.

Physical Description:

1 online resource (317 pages) : illustrations

Edition:

1st edition

Other Title:

Kernel-based Virtual Machine virtualization cookbook

Place of Publication:

Birmingham, England : Packt, 2017.

System Details:

text file

Biography/History:

Ivanov Konstantin: Konstantin Ivanov is a Linux Systems Engineer, an open source developer, and a technology blogger who has been designing, configuring, deploying, and administering large-scale, highly available Linux environments for more than 15 years. His interests include large distributed systems and task automation, along with solving technical challenges involving multiple technology stacks. Konstantin received two Master of Science in Computer Science degrees from universities in Bulgaria and the United States, specializing in System and Network security and Software engineering. In his spare time, he loves writing technology blogs and spending time with his two boys.

Summary:

Deploy, manage, and scale virtual instances using Kernel-based Virtual Machines About This Book Build, manage and scale virtual machines with practical step-by-step examples Leverage the libvirt user-space tools and libraries to manage the life-cycle of KVM instances Deploy and scale applications inside KVM virtual machines with OpenStack Who This Book Is For If you are a system administrator working KVM virtualization, this book will help you grow on your expertise of working with the infrastructure to manage things in a better way. You should have a knowledge of working with Linux based systems. What You Will Learn Deploy different workloads in isolation with KVM virtualization and better utilize the available compute resources Explore the benefits of running applications with KVM and learn to prevent the “bad-neighbor” effect Leveraging various networking technologies in the context of virtualization with Open vSwitch and the Linux bridge. Create KVM instances using Python and inspect running KVM instances Understand Kernel Tuning for enhanced KVM performance and better memory utilization In Detail 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. Style and approach This book takes a complete practical approach with many step-by-step example recipes on how to use KVM in production. The book assumes certain level of expertise with Linux...

Contents:

Cover

Copyright

Credits

About the Author

About the Reviewer

www.PacktPub.com

Customer Feedback

Table of Contents

Preface

Chapter 1: Getting Started with QEMU and KVM

Introduction

Installing and configuring QEMU

Getting ready

How to do it...

How it works...

Managing disk images with qemu-img

There's more...

Preparing images for OS installation with qemu-nbd

Installing a custom OS on the image with debootstrap

Resizing an image

Using pre-existing images

See also

Running virtual machines with qemu-system-*

Starting the QEMU VM with KVM support

Connecting to a running instance with VNC

Chapter 2: Using libvirt to Manage KVM

Installing and configuring libvirt

Defining KVM instances

Starting, stopping, and removing KVM instances

Inspecting and editing KVM configs

Building new KVM instances with virt-install and using the console

Managing CPU and memory resources in KVM

Attaching block devices to virtual machines.

Getting ready

Sharing directories between a running VM and the host OS

Autostarting KVM instances

Working with storage pools

Managing volumes

Managing secrets

Chapter 3: KVM Networking with libvirt

The Linux bridge

The Open vSwitch

Configuring NAT forwarding network

Configuring bridged network

Configuring PCI passthrough network

Manipulating network interfaces

Chapter 4: Migrating KVM Instances

Manual offline migration using an iSCSI storage pool

Manual offline migration using GlusterFS shared volumes

Online migration using the virsh command with shared storage

Offline migration using the virsh command and local image

Online migration using the virsh command and local image

Chapter 5: Monitoring and Backup of KVM Virtual Machines

Introduction.

Resource usage collection with libvirt

Monitoring KVM instances with Sensu

Simple KVM backups with tar and rsync

Creating snapshots

Listing snapshots

Inspecting snapshots

Editing snapshots

Reverting snapshots

Deleting snapshots

Chapter 6: Deploying KVM Instances with OpenStack

Preparing the host for the OpenStack deployment

Installing and configuring the OpenStack Keystone identity service

Installing and configuring the OpenStack Glance image service

Installing and configuring the OpenStack Nova compute service

Installing and configuring the OpenStack Neutron networking service

Building and inspecting KVM instances with OpenStack

Stopping KVM instances with OpenStack

Terminating KVM instances with OpenStack

Chapter 7: Using Python to Build and Manage KVM Instances

Installing and using the Python libvirt library

Defining KVM instances with Python

Starting, stopping, and deleting KVM instances with Python

Inspecting KVM instances with Python

Building a simple REST API server with libvirt and bottle

Chapter 8: Kernel Tuning for KVM Performance

Tuning the kernel for low I/O latency

Memory tuning for KVM guests

CPU performance options

NUMA tuning with libvirt

There is more...

Tuning the kernel for network performance

Index.

Notes:

Includes index.

Description based on online resource; title from PDF title page (ebrary, viewed September 2, 2017).

ISBN:

9781788291507

1788291506

OCLC:

993258504