Virtualized Environments Oracle Enterprise Linux and Oracle VM (SUN)Virtual Box

John Heaton, iSeerix

Oracle OpenWorld UnConference Sep 2010

Agenda • Overview of Virtualization

• Terminology

• Types of Virtualization

• Oracle VM (Sun) VirtualBox

• Creating the Virtual Machine

• Virtual Machine – Guest O/S Install

• Oracle VM VirtualBox Additions

• Oracle Installation

• Post Install Steps

• Open Virtualization Format

• Conclusion

Overview of Virtualization

• Virtualization is the abstraction of computer resources.

• Widespread.

• Different types.

• Similar goal: how to more efficiently utilize available resources.

Terminology

• Host – the environment and operating system upon which the virtual machines are being executed.

• Guest – the operating system which is executed within the virtual machine.

• Virtual Hard Drive – file acting as a HD for a guest

• Virtual Machine – an environment which is created and runs on the host. Dedicated hardware resources and software.

Types of Virtualization

• Platform – separates operating system from underlying resources.

• Application – hosting of applications. • Storage – abstraction of logical storage from

physical storage. • Memory – creating virtualized memory pools. • Network – virtual private networks. • Desktop – remote desktop environments. • Database – decoupling of the database layer.

ORACLE VM (SUN) VIRTUALBOX

• Supports both 32 bit and 64 bit host and guest operating systems.

• Intel VT or AMD-V are supported.

• Support SMP up to 32 virtual processors.

• Large number of host platform options.

• Supports unmodified guests operating systems.

• Compatible with industry standards for OVF.

Oracle VM (Sun) VirtualBox Usage

• Maintaining legacy environments for applications.

• Testing of new operating systems and environments.

• Separate environments to isolate applications (development vs. office).

• Research and development environments to test features or functionality.

• Demo / Sandbox environments.

BUILDING AN ORACLE ENTERPRISE LINUX VIRTUALIZED ENVIRONMENT

• Requirements

Component Processor Memory Graphics

Memory

HDD

Host -

Windows 7

1Ghz or

higher

1GB minimum 128 MB 16 GB

Guest -

Oracle

Enterprise Linux

1Ghz or

higher

512 MB

minimum

32 MB 4 GB

Oracle 11GR2 1Ghz or

higher

1.5 GB 32 MB 24 GB

Total Hardware

Required

1 Ghz

higher

3 GB 128 MB 44 GB

VirtualBox - http://www.virtualbox.org Oracle Enterprise Linux - http://edelivery.oracle.com Oracle 11GR2 obtained - http://otn.oracle.com

Virtual Hard Drive • File which simulates the HD

for the guest operating system.

• Formatted and partitioned by the guest operating system.

• Can be fixed size or dynamic.

• Managed by the virtual media manager.

• Portable across the same host operating systems.

• Pre-create.

Demo Virtual Media Manager

Software Images

• CD / DVD images in ISO format.

• Can be shared across multiple Virtual Machines.

• When mounted are the same as a CD.

• Can be a boot device.

• Easier to use than CD / DVD.

• Best to be local on the Host HDD – faster access.

Demo Virtual Media Manager

Creating the Virtual Machine

• Container for the Guest Operating System.

• Identifies Guest Operating System.

• Can allocate system resources. – Memory

– Storage

– Networks

– Video

– Serial Ports

– USB Drives

– Shared Folders

• Configurable at any stage.

Demo Create Virtual Machine

Virtual Machine Options

• 32 / 64 Bit – Intel VT or AMD-V are required for 64 bit and must be enabled.

• Video Memory – use at least 32mb .

• Load the ISO image for O/S installation under Storage.

• Use Bridged network options. Allows you to interact with the VM. You can change these as necessary based on location and network options.

Virtual Machine – Guest O/S Install • Ensure the compatible

version for the Host. • If the ISO is configured

Linux will start the install process automatically

• Initial setup and package loading screen may take some time.

• Use the Host Key (Right CTRL) to toggle mouse support on/off for the VM.

Demo Install Guest O/S

• Graphical. • Same install process as a

physical server. • Walk through the

wizard. • Configure IP as DHCP if

no static address available and on different networks.

• The Virtual HDD will be partitioned for the O/S.

Virtual Machine – Guest O/S Install

• You can choose the default installation.

• Additional required packages can be installed later and are listed for Oracle.

• The Virtual HDD will be formatted for the Guest O/S.

• Package install could take 45 minutes + .

Virtual Machine – Guest O/S Packages

Virtual Machine – Guest O/S Install Continued

• After packages, reboot.

• Unmount CD.

• Continue the setup.

• Disable Firewall and SELinux.

• Use Oracle as the additional user.

• Once complete, reboot.

Oracle VM VirtualBox Additions • Installed from supplied ISO.

• Adds support for: – Shared Folder – the ability to share a folder

between the host operating system and guest operating system. • Read or Read / Write Mode.

• Mounted as a drive within Oracle Linux

– Mouse Support – removes the need to use the host key. (Right CTRL) to toggle the mouse support for the Virtual Machine.

– Enhanced Graphics Support – dependant on the kernel. Auto screen size and seamless mode is available.

Demo Additions and file mount

Configuring the Environment

• Prepare the Oracle Enterprise Linux for Oracle 11GR2 – Extraction of the software.

– Installation of Additional Linux Packages.

– Configuring the environment: • System configuration

• File Limits

• Profile Settings

• Oracle User

• Bash profile

Demo Environment Config

Installation of Oracle Software

• Select the type of installation. – Software and database

– Desktop Class

• Validate and verify the prerequisites, if not clean then correct and continue.

• Verify directory settings and database names.

Installation of Oracle Database

• Database configuration.

• Run root scripts.

• Configure the Listener with the database (NETMGR).

• If database create fails, use DBCA.

Demo NETMGR and DBCA

Open Virtualization Format • Independent. • Portable across

Operating Systems. • Can be used for

Backups. • Compresses. • Most reliable way to

Virtual Machines. • DO NOT INSTALL

VBADDITIONS FOR CLONES.

Demo OVF

Conclusion

• Oracle VM (Sun) Virtual Box is a robust cost effective virtualization technology.

• Multi Platform.

• Supports 32 bit and 64 bit.

• Effective as a sandbox environment from desktop to server using clones.

• Whitepaper as a download is available from

– www.iseerix.com