Step-By-Step Build and Deploy Xen Hypervisor Virtualization on Linux OpenSUSE 11.3 Server

Global Open Versity, HPC Cloud Labs Install Guide Xen Virtualization on Linux openSUSE v1.0

April 2007, Kefa Rabah, Global Open Versity, Vancouver Canada www.globalopenversity.org VCC200 – Introduction to the Xen Hypervisor & Virtualization

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Global Open Versity

Virtualization Computing Hands-on Labs Training Manual

Step-By-Step Build & Deploy Xen Hypervisor Virtualization on Linux OpenSUSE 11.3 Server

Kefa Rabah

Global Open Versity, Vancouver Canada [email protected] www.globalopenversity.org

Table of Contents Page No.

STEP-BY-STEP BUILD & DEPLOY XEN HYPERVISOR VIRTUALIZATION ON LINUX OPENSUSE 11.3 SERVER 2

Introduction 2

Hands-on Labs Sessions 3

Part 1: Installing and Configuring Xen Package 3 Step 1: Xen Virtualization Overview 3 Step 2: Install Xen Virtualization 4 Step 3: Using Command Line Tools 9

Part 2: Creating a Virtual Machine 12 Step 1: Preparing the System for virt-install 12 Step 2: Running virt-install to build the Xen Guest System 13 Step 3: Install & Configure a Fedora 13 VM 13 Step 4: Run the VM using Command-line 25 Step 5: Modify Firewall Configuration 26

5.1 Task: Disable / Turn off Linux Firewall (Red hat/CentOS/Fedora Core) 26 5.2 Task: Enable / Turn on Linux Firewall (Red hat/CentOS/Fedora Core) 26

Part 3: Installing Apache, PHP, MySQL 27 Step 1: Install LAMP 27 Step 2: Modify Hostname 28 Step 3: Manage your VM using Command-line 29

Part 4: Need More Training on Linux 29 Introduction to the Xen Hypervisor & Virtualization – VCC200 29 Linux Administration Training 30

Part 5: Hands-on Labs Assignments 30 A GOV Open Access Technical Academic Publications Enhancing education & empowering people worldwide through eLearning in the 21st Century



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Global Open Versity

Virtualization Computing Hands-on Labs Training Manual Step-By-Step Build & Deploy Xen Hypervisor Virtualization on Linux

OpenSUSE 11.3 Server By Kefa Rabah, [email protected] Nov 22, 2010 GTS Institute

Introduction

In computing, Xen® hypervisor is a virtual-machine monitor for IA-32, x86-64, Itanium and PowerPC 970 architectures. It allows several guest operating systems to execute on the same computer hardware concurrently. The University of Cambridge Computer Laboratory developed the first versions of Xen; as of 2010 the Xen community develops and maintains Xen as free software, licensed under the GNU General Public License (GPLv2). Xen systems have a structure with the Xen hypervisor as the lowest and most privileged layer. Above this layer come one or more guest operating systems, which the hypervisor schedules across the physical CPUs. The first guest operating system, called in Xen terminology "domain 0" (dom0), boots automatically when the hypervisor boots and receives special management privileges and direct access to all physical hardware by default. The system administrator can log into dom0 in order to manage any further guest operating systems, called "domain U" (domU) in Xen terminology. Xen is a free open source software virtual machine monitor for Intel / PowerPC architectures. It is software that runs on a host operating system and allows several guest operating systems to be run on top of the host on the same computer hardware at the same time (just like VMWare software). Luckily Installing and managing XEN is quite easy under Linux openSUSE 11.3 Server. The openSUSE project is a worldwide effort that promotes the use of Linux everywhere. OpenSUSE creates one of the world's best Linux distributions, working together in an open, transparent and friendly manner as part of the worldwide Free and Open Source Software community. The latest release, openSUSE 11.3, features new and massively improved versions of all useful server and desktop applications. It comes with more than 1,000 open source applications. The openSUSE distribution is a stable, easy to use and complete multi-purpose distribution. It is aimed for users and developers working on desktop or server. It's great for beginners, experienced users and ultra geeks, short it's perfect for everybody! openSUSE is also the base for Novell's award-winning SUSE Linux Enterprise products. Fedora is a Linux-based operating system that brings the latest in free and open source software to your desktop, laptop and server, and gives you access to thousands of different open source applications. This helpful, user-friendly operating system is built by people across the globe; who work together as a community to create the Fedora Project. Fedora 13 (Goddard) is filled with improvements that make Linux better than ever for all types of users. Here are a few of the new things you can expect to see when you try out Fedora 13.



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Hands-on Labs Sessions

In this hands-on lab you will learn how to install and configure Xen Hypervisor on Linux openSUSE 11.3. It’s assumed that you know how to install and configure Linux openSUSE 11.3 Server. I’ll also show you how to install & configure your first Fedora 13 virtual machine and use it to deploy a LAMP Server. Upon completion of this hands-on lab session you should have gained a competency and skills necessary to install Xen hypervisor with multiple guest machines to build a complete network infrastructure: DNS server, messaging server etc.

Assumptions:

1. It’s assumed that you have a good understanding of Linux operating system and its working environment. It’s also assumed that you know how to install and configure Linux openSUSE 11.3 server, if not go ahead and pop over to Docstoc.com and check out a good hands-on manual entitled “Step-By-Step Install Guide Linux OpenSUSE 11.3 Server v1.1” to get you started.

2. It’s assumed that you have a good understanding of Linux operating system and its working

environment. It’s also assumed that you know how to install and configure Linux Fedora 13 server, if not go ahead and pop over to Dosctoc.com and check out a good hands-on manual entitled “Step-By-Step Install Guide Fedora 13 Server v1.0” to get you started.

Part 1: Installing and Configuring Xen Package

Step 1: Xen Virtualization Overview

Xen Virtualization with Novell openSUSE Linux Server 111.3 is quite easy. Virtualization has become the buzz word of the industry, with people looking at consolidation of multiple servers onto a single server. Many reasons for consolidation come to mind, including cost reduction, better utilization of hardware, and better control of resources, more-so in the data center environment. This document will look at virtualization using Xen on Novell’s open source openSUSE 11.3 servers. Novell is committed to the propagation of Xen* virtualization technologies. These technologies are included in the release of openSUSE 11.3 servers, the latest open source server operating system from Novell. This unique opportunity for Novell to take a leading role in the shift to virtualization-based IT is due to the convergence of commodity hardware and open source software i.e., Linux running on x86 and x86-64 computers. Currently, resource utilization, efficiency, scalability, availability, manageability and security, are today what they key issues that keep data center managers awake late into the night. Virtualization technologies can address these concerns and benefit the entire enterprise, but they haven’t been widely adopted, that is, until recently. What’s changed? Well, for starters, the data center. To-date, the numbers of physical servers has grown to unmanageable proportions. Enterprises need virtualization technologies to compensate for the inefficiencies of increasing server sprawl. Open source Linux has taken a more prominent role in



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enterprises – handling everything from edge services (Web, firewall, DNS and DHCP) to middle-tier application and middleware; from backend database, e-mail and file serving to commercial high-performance cluster computing and enterprise grid deployments. More and more enterprises are also turning to Linux to help address their multi-tier server consolidation issues – and it’s great in terms of ROI as most of the implementation is from the open source. In addition, Intel and AMD have designed virtualization functionality into the latest x86 and x86-64 processors – adding hardware support for server consolidation by enabling strict fault and performance isolation. They’ve also added functionality that enables unmodified operating systems to run concurrently on the same physical machine.

Step 2: Install Xen Virtualization

Virtualization cannot be that simpler than in openSUSE 11.3. In openSUSE 11.3, Xen Virtualization is pre-built and all it takes is a few clicks away from up and running with Virtualization in no time. Xen is a virtual machine monitor for x86 that supports execution of multiple guest operating systems with unprecedented levels of performance and resource isolation. This package contains the Xen Hypervisor. 1. Login as the root user and then to install Xen Virtualization in openSUSE 11.3 perform the following

procedure: 1. Click Computer YaST. From YaST2 Control Center, click Virtualization Install Hypervisor

Tools, as shown in Fig. 1

Fig. 1



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2. From Fig. 2, Configuring the VM Server (domain 0), click on the Install button start the installation.

Fig. 2 3. From Fig. 3, this system will start downloading the Xen Virtualization packages and the modified

kernel for Xen virtualization. It’ll take several minutes so just relax or grab a cup of coffee.



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Fig. 3 4. When done with the installation, it will prompt you to reboot and start the system by selecting the

openSUSE option with Xen kernel from the list, as shown in Fig. 4. Click on the OK button to reboot the system.



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Fig. 4 5. From Fig. 5, select Xen – openSUSE 1.3 – 2.6.34.7-0.5 option to boot your system. This will boot

openSUSE with the modified kernel which supports Xen virtualization and everything else should load normally.



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Fig. 5 6. Let’s install tightVNC for GUI installation of our VMs, run:

# yast –install tightvnc

7. Now, from the Computer icon Applications – System Virtualization and then click on

"Create Virtual Machines" to start creating virtual machines, as shown in Fig. 6.

Fig. 6



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8. You’re now ready to create and install your cool VMs and use them for any application as desired. You can click on the Forward button and proceed to install a VM. However, for this hands-on session we’re going to use command-line option to install our VMs. Feel free to use the GUI option.

Fig. 7 9. In the next section I’ll show you that you how to use command-line to test and install your VMs.

Step 3: Using Command Line Tools

1. The system should now automatically boot the new Xen kernel. After the system has booted, we can check that by running

uname -r



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Note: well, we have now verified that the system is indeed using the new Xen kernel!

2. Next, run "xm list" to check if Xen has started. It should list "Domain-0" (dom0), see Fig. 4:

Fig. 4 3. Follow the link below to access the full document. The full document has moved to Docstoc.com. You can access and download it from here:

• Step-By-Step Build and Deploy Xen Hypervisor Virtualization on Linux OpenSUSE 11.3 Server OR

• http://www.docstoc.com/docs/64800860/Step-By-Step-Build-and-Deploy-Xen-Hypervisor-Virtualization-on-Linux-OpenSUSE-113-Server

Introduction to the Xen Hypervisor & Virtualization – VCC200

You can now register and take our superb Introduction to the Xen Hypervisor Training course:

• VCC200 – Introduction to the Xen Hypervisor & Virtualization Contact us today: Email: [email protected] URL: www.globalopenversity.org

----------------------------------------------- Kefa Rabah is the Founder of Global Technology Solutions Institute. Kefa is knowledgeable in several fields of Science & Technology, Information Security Compliance and Project Management, and Renewable Energy Systems. He is also the founder of Global Open Versity, a place to enhance your educating and career goals using the latest innovations and technologies.

Fellow us on Twitter: Global Open Versity and Kefa Rabah A GOV Open Access Technical Academic Publications Enhancing education & empowering people worldwide through eLearning in the 21st Century

Step-By-Step Build and Deploy Xen Hypervisor Virtualization on Linux OpenSUSE 11.3 Server

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