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Oracle VM Experiences

Experiences with

OracleVM 3.3

Hans Forbrich

Oracle ACE Director

Forbrich Consulting Ltd


Based in Alberta, Canada

Why I use Oracle VM

• Oracle shop

• Oracle product licensing

• Hard Partitioning

• Fixed servers

• 5x Dell Precision 490 w/ 36GB RAM each

• 2x Dell Precision T5500 w/ 48GB RAM each

• All machines: 3x GB Ethernet NIC

• Replace 22 smaller servers

• Test, Dev, Prod, Education


My Architecture

• 2x Dell Optiplex 760

• DNS, DHCP, NTP

• 1x Dell Optiplex 760

• Cloud Control & OracleVM Manager

• 3x GB switches

• Public, Storage, Interconnect

• 1x custom NAS

• 5TB, iSCSI and NFS

• 7x Dual CPU, Quad Core machines for VM

• 2 Prod, 2 Test, 3 Dev


Part 1 – Overview of Oracle VM



What is Oracle VM

• Two VM solutions

– Oracle VM for X86

– Oracle VM for Sparc

• Two management solutions

– Oracle VM Manager

– Oracle Enterprise Manager PlugIn for OVM


Oracle VM Architecture

From Oracle VM

User Guide, Ch 2


Oracle VM for x86

• Based on XEN 4.x

– Enhanced for Multi-Server 'pools'

• Not latest version of XEN

– Stability

– Central repository

– UUID for all resources

– Uses own CLI, not ‘xm’


Raw Iron Virtualization

• Thin layer called Hypervisor

• Responsible for drivers

• Primary Domain (Dom0)

• Management utilities, start/stop VMs

• ODA has a Dom1 called ODA_BASE

• Extra privileges, such as Disk access

• VMs go into User Domains (DomU)

• Resources that can host OS and App

Oracle VM Server 3.3

• Only 64 bit

• Based on XEN Project 4.3

• Oracle Linux 6 core with UEK 6

• Dom0 is Oracle Linux 6

• Huge Pages support

• Interoperable with OpenStack

• OVM Manager is WS enabled

• OVM Agent to talk back to Manager

• Uses Berkeley DB for local configuration


Experiences OVM-Server

Install • Very simple install

• Get from http://edelivery.oracle.com/linux

• Free FOSS license

• ISO (DVD) is 547MB

• Small enough to fit in a Desktop VM

• VMWare Fusion has HVM support

• VirtualBox 4.3 does not

• Can not use for demo Windows ‘raw’


http://edelivery.oracle.com/linux

Experiences OVM-S Install

• Prepare with the information

• Host name,

• IP address,

• DNS,

• Gateway


Plus some more (boring) screens over the

next 5 minutes

To get …



• Install complete (about 15 minutes)

• After that, access is via

• ssh

• OVM Manager Console through OVM

Manager


• What kind of disk • NFS

• iSCSI (perhaps ZFS Appliance)

• Need to set up mounts

• Perhaps iSCSI initiator • Probably the trickiest part of all



Post Install


Oracle VM Manager

• Centralized management tool

– All resources are identified by UUID

– Use repository to 'translate' name – UUID

• Both Graphical and CLI front ends

• Manage

– Server, Server Pool

– Storage

– Network

– Domains, Virtual Machines

• Start, Stop, Create, Destroy, Kill, move

Oracle VM Manager 3.3

• Application installed in a Linux machine

• Repository is based on MySQL EE

• UI based on WebLogic 12c and ADF 12c

• Supports WebServices API

• Both SOAP and REST

• SOA compatible


Oracle VM Manager Install

• Requires a host

• Install a plain Oracle Linux 6 (u5)

• Wants 8GB RAM

• 2-4GB RAM seems OK for small configuration

• 40GB disk seem adequate

• Extra space can be given to NFS

• Get the Oracle VM Manager software from


• Install into the prepared host





• A ‘pre-install’ script prepares host

• Pre-install using ‘createOracle.sh’

• Same concept as oracle-validated.rpm

• Creates user, sets up kernel and permissions



Oracle VM Manager 3.3 Install

• runInstaller.sh

• MUCH faster than previous versions

• Shell script, not GUI

• Install, upgrade, remove

• Goes through 9 steps



Oracle VM Console

Getting Going

• Oracle VM Manager is ‘easy’ to use


Important Concept

• Oracle VM Server has multiple domains

• At least Dom0 and potentially many DomU

• A domain is a named set of resources

that can hold a Virtual Machine

• A Virtual Machine runs inside of a Domain


The console


• The console has not changed much

Using OVM Manager GUI

• Simple workflow

• Create Server Pools

• Discover OracleVM Servers

• Assign to Server Pools

• Set up networking that is visible to servers

• Several Network Pools – needs thought

• Discover storage that is visible to servers

• Several Storage Pools – needs thought

• Create repositories and fill with templates …

• Create VMs


Discover Servers


Assign to Pools


Networking


Storage and Repositories



Oracle VM CLI

• Command line client

• Accessed using ssh

• Commands

– Discover

– Create, Add, Import, Edit, Remove

– Set, Show, List

– Start, Restart, Stop, Kill, Suspend, Restart, Move

• Scripts using expect

– Supplement/replace Oracle VM Utilities

• I’m still learning it!


Jobs, Jobs everywhere

• Create and Manage Jobs

• Jobs will be scheduled

• Jobs are executed by Agents

• Console used to display status

Jobs – Check the Console!



Explore OVM Manager Docs

• Users Guide

• CLI Manual

• Utilities Guide


Oracle Enterprise Manager

Ops Center • Central management GUI

– Data Center View of Oracle HW

– Self-service opportunity

• Alternate to OVM Manager Console

– Higher level

– Allocate, move resources between VM Managers

• www.youtube.com/user/OracleLearning

– Oracle Ops Center 12c and Oracle VM

http://www.youtube.com/user/OracleLearning

http://www.youtube.com/user/OracleLearning


Oracle Enterprise Manager

Cloud Control • Centralized monitoring and management

• Central

– Console

– Dashboard

– Job Scheduler

• Distributed Agents

– For Oracle VM, Agent is deployed on VM

Manager host

OEM Cloud Control 12c

• Workflow • Discover OVM Manager host

• Ensure Self-Service updates enabled • Setup, Extensibility

• Ensure VM PlugIns are deployed • On EM Oracle Management Server and

• On OVM Manager

• Ensure OVM Manager keystore is shared with OM Agent

• Discover OVM Manager (Add Targets)

• Register OVM Manager (Infrastructure)


Add PlugIns (OEM Downtime)


Create and Share OVMM

Keystore


Register OVM Manager


Use OVM Manager


How it works for me

• OVM Manager GUI to manage VMs

• Not used often

• I don’t have any scripts yet

• OEM Cloud Control to monitor

• Part of larger OEM monitor strategy

• Allows remote monitoring

• Plans to incorporate sctipts



Conclusion

• Many tools involved

• VM Manager is required

• Cloud Control for monitoring

• Scripting, Command Line

– Learning curve

• It takes time

• But it’s worth it!


Questions?


Thank You

Hans Forbrich

mailto:[email protected]

http://www.forbrichcomputing.com

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