Mastering KVM Virtualization Second Edition

Design expert data center virtualization solutions with the power of Linux KVM

Vedran Dakic , Humble Devassy Chirammal , Prasad Mukhedkar , Anil Vettathu 지음

Packt(GCO Science) 2020년 10월 23일 출간

작품소개

책소개

Learn how to configure, automate, orchestrate, troubleshoot, and monitor KVM-based environments capable of scaling to private and hybrid cloud models.

▶Book Description
Kernel-based Virtual Machine (KVM) enables you to virtualize your data center by transforming your Linux operating system into a powerful hypervisor that allows you to manage multiple operating systems with minimal fuss. With this book, you'll gain insights into configuring, troubleshooting, and fixing bugs in KVM virtualization and related software.

This second edition of Mastering KVM Virtualization is updated to cover the latest developments in the core KVM components - libvirt and QEMU. Starting with the basics of Linux virtualization, you'll explore VM lifecycle management and migration techniques. You'll then learn how to use SPICE and VNC protocols while creating VMs and discover best practices for using snapshots. As you progress, you'll integrate third-party tools with Ansible for automation and orchestration. You'll also learn to scale out and monitor your environments, and will cover oVirt, OpenStack, Eucalyptus, AWS, and ELK stack. Throughout the book, you'll find out more about tools such as Cloud-Init and Cloudbase-Init. Finally, you'll be taken through the performance tuning and troubleshooting guidelines for KVM-based virtual machines and a hypervisor.

By the end of this book, you'll be well-versed with KVM virtualization and the tools and technologies needed to build and manage diverse virtualization environments.

▶What You Will Learn
？Implement KVM virtualization using libvirt and oVirt
？Delve into KVM storage and network
？Understand snapshots, templates, and live migration features
？Get to grips with managing, scaling, and optimizing the KVM ecosystem
？Discover how to tune and optimize KVM virtualization hosts
？Adopt best practices for KVM platform troubleshooting

▶Key Features
？Gain expert insights into Linux virtualization and the KVM ecosystem with this comprehensive guide
？Learn to use various Linux tools such as QEMU, oVirt, libvirt, Cloud-Init, and Cloudbase-Init
？Scale, monitor, and troubleshoot your VMs on various platforms, including OpenStack and AWS

▶Who This Book Is For
If you are a systems administrator, DevOps practitioner, or developer with Linux experience looking to sharpen your open-source virtualization skills, this virtualization book is for you. Prior understanding of the Linux command line and virtualization is required before getting started with this book.

목차

▶TABLE of CONTENTS
▷ Section 1: KVM Virtualization Basics
？Chapter 1: Understanding Linux Virtualization
？Chapter 2: KVM as a Virtualization Solution

▷ Section 2: libvirt and ovirt for Virtual Machine Management
？Chapter 3: Installing KVM Hypervisor, libvirt, and oVirt
？Chapter 4: Libvirt Networking
？Chapter 5: Libvirt Storage
？Chapter 6: Virtual Display Devices and Protocols
？Chapter 7: Virtual Machines: Installation, Configuration, and Life Cycle Management
？Chapter 8: Creating and Modifying VM Disks, Templates, and Snapshots

▷ Section 3: Automation, Customization, and Orchestration for KVM VMs
？Chapter 9: Customizing a Virtual Machine with cloud-init
？Chapter 10: Automated Windows Guest Deployment and Customization
？Chapter 11: Ansible and Scripting for Orchestration and Automation

▷ Section 4: Scalability, Monitoring, Performance Tuning, and Troubleshooting
？Chapter 12: Scaling Out KVM with OpenStack
？Chapter 13: Scaling out KVM with AWS
？Chapter 14: Monitoring the KVM Virtualization Platform
？Chapter 15: Performance Tuning and Optimization for KVM VMs
？Chapter 16: Troubleshooting Guidelines for the KVM Platform

책 속으로

▶What this book covers
？ Chapter 1, Understanding Linux Virtualization, discusses different types of virtualization, hypervisor types, and Linux virtualization concepts (Xen and KVM). In this chapter, we try to explain some basics of Linux virtualization and how it fits into the cloud environment from a high-level perspective.

？ Chapter 2, KVM as a Virtualization Solution, starts with a discussion of virtualization concepts and the need to virtualize our environments, explains the basic hardware and software aspects of virtualization, and the various approaches to virtualization. In this chapter, we start discussing KVM and libvirt, concepts that we'll use throughout this book.

？ Chapter 3, Installing KVM Hypervisor, libvirt, and oVirt, expands on Chapter 2 by introducing some new concepts including oVirt, a GUI that can be used to manage our virtualized Linux infrastructure. We take you through the process of checking whether the hardware used is compatible with KVM, introduce some basic commands for virtual machine deployment, and then move on to explain how we'd use oVirt in the same scenario.

？ Chapter 4, Libvirt Networking, explains how libvirt interacts with various networking concepts ？ virtual switches in different modes, how to use CLI tools to manage libvirt networking, TAP and TUN devices, Linux bridging, and Open vSwitch. After that, we discuss more extreme examples of networking by using SR-IOV, a concept that should get us the lowest latency and highest throughput and is used in cases where every single millisecond counts.

？ Chapter 5, Libvirt Storage, is a big one, as storage concepts are extremely important when building virtualized and cloud environments. We discuss every type of storage that KVM supports ？ local storage pools, NFS, iSCSI, SAN, Ceph, Gluster, multipathing and redundancy, virtual disk types, and so on. We also offer you a glimpse into the future of storage ？ with NVMe and NVMeoF being some of the technologies discussed.

？ Chapter 6, Virtual Display Devices and Protocols, talks about various virtual machine display types, remote protocols including VNC and Spice, as well as NoVNC, which ensures display portability as we can use a virtual machine console inside a web browser by using NoVNC.

？ Chapter 7, Virtual Machines: Installation, Configuration, and Life Cycle Management, introduces additional ways of deploying and configuring KVM virtual machines, as well as migration processes, which are very important for any kind of production environment.

？ Chapter 8, Creating and Modifying VM Disks, Templates, and Snapshots, discusses various virtual machine image types, virtual machine templating processes, the use of snapshots, and some of the use cases and best practices while using snapshots. It also serves as an introduction to the next chapter, where we will be using templating and virtual machine disks in a much more streamlined fashion to customize virtual machines post-boot by using cloud-init and cloudbase-init.

？ Chapter 9, Customize a Virtual Machine with cloud-init, discusses one of the most fundamental concepts in cloud environments ？ how to customize a virtual machine image/template post-boot. Cloud-init is used in almost all of the cloud environments to do post-boot Linux virtual machine configuration, and we explain how it works and how to make it work in your environment.

？ Chapter 10, Automated Windows Guest Deployment and Customization, is a continuation of Chapter 9, with a razor-sharp focus on Microsoft Windows virtual machine templatization and post-boot customization. For that, we use cloudbase-init, a concept that's basically the same as cloud-init, but which is suited for Microsoft-based operating systems only.
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▶ Preface
Mastering KVM Virtualization is a book that should get you "from zero to hero" status in the time it takes for you to go through this book. This book is a large collection of everything that KVM has to offer, both for a DevOps and regular system administration audience, and developers. It is our hope that, by going through this book, you'll be able to understand everything about the inner workings of KVM, as well as the more advanced concepts and everything in between. It doesn't matter if you're just barely starting with KVM virtualization or if you're already well on the way ？ you should find some valuable information on the pages of this book.

작가정보

저자(글) Vedran Dakic

Vedran Dakic works as a head of Department of operating systems at Algebra University College. He began using Linux while in college back in 1995 and became a RedHat Certified Technician/System Administrator, Engineer and Trainer in 2005., and RedHat Certified Virtualization Administrator in 2016. He's also a certified Microsoft Trainer and VMware Instructor, with key areas of expertise being virtualization, application and cloud technologies (OpenStack, OpenShift, Office 365, Exchange, Azure, vRealize, vCloud Director, etc.)

저자(글) Humble Devassy Chirammal

Humble Devassy Chirammal is a senior software engineer in the Storage Engineering team at Red Hat. He has more than 15 years of IT experience, and his area of expertise is in understanding the full stack in an ecosystem, with emphasis on architecting solutions based on demand. These days he primarily concentrates on Ceph and GlusterFS and its integration to container orchestrator systems like Kubernetes. He has hands-on experience of emerging technologies, such as IaaS and PaaS solutions in Cloud and Containers. In the past, he has worked on intrusion detection systems, Clustering solutions, and Virtualization. As an open source advocate, he is a core contributor to many open source projects like Kubernetes. He actively organizes meetups on Openshift/ Kubernetes, Virtualization, GlusterFS, CentOS. His twitter handle is @hchiramm.

저자(글) Prasad Mukhedkar

Prasad Mukhedkar is a specialist cloud solution architect at Red Hat India with over 10 years of experience in helping customers in their journey to Virtualization and Cloud adoption. He is a Red Hat Certified Architect and has extensive experience in designing and implementing high performing cloud infrastructure. His areas of expertise are Red Hat Enterprise Linux 7/8 performance tuning, KVM virtualization, Ansible Automation, and Red Hat OpenStack. He is a huge fan of the Linux "GNU screen" utility.

저자(글) Anil Vettathu

Anil Vettathu began his association with Linux while in college and began his career as a Linux System Administrator soon after. He is a generalist, with an interest in open source technologies. He has hands-on experience in designing and implementing large scale virtualization environments using open source technologies and has extensive knowledge in libvirt and KVM. These days he primarily works on Red Hat Enterprise Virtualization, containers, and real time performance tuning. Currently, he is working as a Technical Account Manager for Red Hat.