Book Image

OpenNebula 3 Cloud Computing

Book Image

OpenNebula 3 Cloud Computing

Overview of this book

OpenNebula is one of the most advanced and highly-scalable open source cloud computing toolkits. If you ever wanted to understand what Cloud Computing is and how to realize it, or if you need a handy way to manage your messy infrastructure in a simple and coherent manner, this is your way. OpenNebula 3 Cloud Computing guides you along the building and maintenance of your cloud infrastructure, providing real-world examples, step-by-step configuration and other critical information. The book keeps you a step ahead in dealing with the demanding nature of cloud computing and virtual infrastructure management using one of the most advanced cloud computing toolkitsñ OpenNebula. The book takes you from a basic knowledge of OpenNebula to expert understanding of the most advanced features.The book starts with a basic planning of hardware resources and presents the unique benefits of the supported hypervisors; you will go in deep with day-to-day management of virtual instances, infrastructure monitoring and integration with Public Clouds like Amazon EC2.With this book you will be able to get started with fast and cheap configuration recipes, but also go deeper for a correct integration with your existing infrastructure.You will deal with well-know virtualization technologies like Xen and VMware, but also with the promising KVM technology integrated in the Linux kernel. After the basic infrastructure set-up, you will learn how to create and manage virtual instance via both command-line and web interfaces, and how to monitor your existing resources.At the end, the book acquaints you with integrating your local infrastructure with external Cloud resources but also publishing your resources to others via common API interfaces.
Table of Contents (17 chapters)
OpenNebula 3 Cloud Computing
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
1
OpenNebula and Why it Matters?
Index

The virtual machine template


In the following paragraphs, we will analyze every section and its relative attributes that can be used to configure a VM.

The capacity section

The first section of a VM template is used to configure the resources allocated to it. The following table provides information about the various capacity attributes and their descriptions:

Attribute

Description

Default

NAME

Name assigned to the VM.

one-id

MEMORY

Amount of RAM required for the VM, in MB.

Must be set.

CPU

Percentage of CPU divided by 100 assigned to the VM.

1.0

VCPU

Number of virtual CPUs attached to VM.

1

An updated reference is available at the following link:

http://opennebula.org/documentation:rel3.2:template#capacity_section

An example for assigning the values to the capacity section parameters is as follows:

NAME   = test-vm
MEMORY = 1024
CPU    = 0.5
VCPU = 4

The OS and boot options section

This section is used to specify boot options, such as kernel, initrd, and bootloader. Every attribute...