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

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Examples on how to use a cloud-config script with cloud-init

First, you need to download the cloud images and resize them in order to make sure that the disk size after everything is installed is large enough to accommodate all the files you plan to put in the machine you created. In these examples, we are going to use two images, one for CentOS, and another for Ubuntu Server. We can see that the CentOS image we are using is 8 GB in size, and we will enlarge it to 10 GB. Note that the actual size on the disk is not going to be 10 GB; we are just allowing the image to grow to this size.

We are going to do the same with the Ubuntu image, after we get it from the internet. Ubuntu also publishes cloud versions of their distribution daily, for all supported versions. The main difference is that Ubuntu creates images that are designed to be 2.2 GB when full. We downloaded an image from https://cloud.centos.org; let's now get some information about it:

Figure...