You're reading from Mastering KVM Virtualization Design expert data center virtualization solutions with the power of Linux KVM

Product type Paperback

Published in Oct 2020

Publisher Packt

ISBN-13 9781838828714

Length 686 pages

Edition 2nd Edition

Tools

KVM

Concepts

Design

Authors (4):

Humble Devassy Chirammal

Prasad Mukhedkar

Vedran Dakic

Anil Vettathu

View More author details

Table of Contents (22) Chapters

Preface

1. Section 1: KVM Virtualization Basics

2. Chapter 1: Understanding Linux Virtualization FREE CHAPTER

3. Chapter 2: KVM as a Virtualization Solution

4. Section 2: libvirt and ovirt for Virtual Machine Management

5. Chapter 3: Installing KVM Hypervisor, libvirt, and oVirt

6. Chapter 4: Libvirt Networking

7. Chapter 5: Libvirt Storage

8. Chapter 6: Virtual Display Devices and Protocols

9. Chapter 7: Virtual Machines: Installation, Configuration, and Life Cycle Management

10. Chapter 8: Creating and Modifying VM Disks, Templates, and Snapshots

11. Section 3: Automation, Customization, and Orchestration for KVM VMs

12. Chapter 9: Customizing a Virtual Machine with cloud-init

13. Chapter 10: Automated Windows Guest Deployment and Customization

14. Chapter 11: Ansible and Scripting for Orchestration and Automation

15. Section 4: Scalability, Monitoring, Performance Tuning, and Troubleshooting

16. Chapter 12: Scaling Out KVM with OpenStack

17. Chapter 13: Scaling out KVM with AWS

18. Chapter 14: Monitoring the KVM Virtualization Platform

19. Chapter 15: Performance Tuning and Optimization for KVM VMs

20. Chapter 16: Troubleshooting Guidelines for the KVM Platform

21. Other Books You May Enjoy

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Verifying the KVM service status

We're starting off with the simplest of all examples – verifying the KVM service status and some of its normal influence on host configuration.

In Chapter 3, Installing a KVM Hypervisor, libvirt, and ovirt, we did a basic installation of the overall KVM stack by installing virt module and using the dnf command to deploy various packages. There are a couple of reasons why this might not end up being a good idea:

A lot of servers, desktops, workstations, and laptops come pre-configured with virtualization turned off in BIOS. If you're using an Intel-based CPU, make sure that you find all the VT-based options and enable them (VT, VT-d, VT I/O). If you're using an AMD-based CPU, make sure that you turn on AMD-V. There's a simple test that you can do to check if virtualization is enabled. If you boot any Linux live distribution, go to the shell and type in the following command:
```
cat /proc/cpuinfo | egrep "vmx|svm...
```