OpenNebula 3 Cloud Computing

Giovanni Toraldo

• Publisher: Packt Publishing
• Year: 2012
• eBook ISBN: 9781849517461
• Edition: 1
• Topic: Computer Science
• Subtopic: Computer Networking
• Index: Computer Science

In Detail

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 toolkits- 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.

Approach

This is a step-by-step practical guide to get you started easily with openNebula. It guides you to build, maintain, and configure your cloud infrastructure, providing real-world examples in a simple and coherent manner.

Who this book is for

If you are a GNU/Linux system administrator with no experience with virtualization or cloud computing but eager to learn about it, or you are thwarted by your current virtualized infrastructure, this book is for you. You are expected to have some basic knowledge of GNU/Linux, with knowledge of basic package management tools and system configuration.

OpenNebula 3 Cloud Computing

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Table of Contents

OpenNebula 3 Cloud Computing

Credits

Foreword

About the Author

About the Reviewers

www.PacktPub.com

Support files, eBooks, discount offers and more

Why Subscribe?

Free Access for Packt account holders

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. OpenNebula and Why it Matters?

The core features

Standing on the shoulders of the giants

Xen

KVM

QEMU/KVM

Libvirt

VMware

Summary

2. Building Up Your Cloud

Typical cloud hardware

CPU

Memory

Disk and RAID

Network card

Book conventions

Basic OS installation and partitioning

Commonly required configurations

Frontend software requirements

Host software requirements

Image Repository and storage

Networking

The oneadmin user

OpenNebula installation through sources

Ruby dependencies

OpenNebula installation through pre-built packages

Basic OpenNebula configuration

SSH public-key authentication

One daemon per oneadmin user

Self-contained installations

First start of oned

OpenNebula frontend configuration

MySQL backend configuration

Virtual network configuration

Image Repository configuration

Information Manager driver configuration

Virtualization Manager driver configuration

Transfer Manager driver configuration

Image Manager driver configuration

Hook system configuration

Managing users and groups

Local and remote user login

Creating custom groups with custom ACLs

Quota

Summary

3. Hypervisors

Configuring hosts

The oneadmin account and passwordless login

Verifying the SSH host fingerprints

Configuring a simple DNS with dnsmasq

Configuring sudo

Configuring network bridges

Managing hosts in OpenNebula

Networking drivers

Configuring the fw support

Configuring the ebtables support

KVM installation

Enabling kernel samepage merging

Using an updated kernel in Ubuntu Lucid

The Xen installation

Installing on Debian Squeeze through standard repositories

Installing Xen through sources

A suitable kernel with dom0 support – Debian Squeeze

A suitable Kernel with dom0 support – Oneiric backport

Checking if your current kernel has Xen support

Building a custom kernel with dom0 and domU support

Autoloading necessary modules

Onehost create for Xen hosts

Installing VMware ESXi

Required software on the frontend

Installing Libvirt with ESX support

Adding a oneadmin user with privileges

Summary

4. Choosing Your Storage Carefully

How a transfer manager works

Non-shared storage through SSH/CP

Non-shared storage scripts

Shared storage through NFS on the frontend

Shared storage through NFS using NAS/SAN

Shared storage scripts

Shared storage through distributed file systems

Shared storage through GlusterFS

GlusterFS hardware requirements

GlusterFS server installation

Setting up a GlusterFS volume

Starting a GlusterFS volume

Accessing GlusterFS data

Tuning volume options

Operations on volume

Self-heal on replicated volumes

Overview of GlusterFS integration with OpenNebula

Shared Storage through MooseFS

MooseFS hardware requirements

MooseFS server installation through sources

MooseFS server installation through PPA

MooseFS master configuration

MooseFS chunkserver configuration

MooseFS metalogger configuration

Master takeover with metalogger data

MooseFS client mounting

NFS fallback mount through unfs3

MooseFS web interface

Setting goals and fault tolerance

Setting trash time and access to the trash bin

Making snapshots

MooseFS OpenNebula integration

Summary

5. Being Operational—Everything Starts Here!

Launch a test instance—ttylinux

Managing the virtual networks

Template for ranged networks

Template for fixed networks

Submitting and managing a network template

Managing the disk images

Template for operating system images

Template for datablock images

Template for CDROMs

Specific image handling for VMware

Submitting a new disk image

Changing attributes of submitted templates

Managing virtual machines

Virtual machine life-cycle

Managing the instances

The virtual machine template

The capacity section

The OS and boot options section

The disks section

The network section

The I/O devices section

The placement section

The context section

The RAW section

Simple examples

KVM example

Xen HVM example

Xen pygrub example

VMware example

Contextualization

The basic contextualization

The generic contextualization

The template repository

Summary

6. Web Managem...

Table of contents

• OpenNebula 3 Cloud Computing