Transcript Installing and Configuring Oracle VM

Oracle VM
Julian Dyke
Independent Consultant
Web Version - October 2008
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© 2008 Julian Dyke
juliandyke.com
Agenda
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Virtualization
Oracle VM
 Oracle VM Server
 Oracle VM Agent
 Oracle VM Manager
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Virtualization
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Virtualization
Overview
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Virtualization is the process of abstracting computing resources
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Multiple operating systems and application images share same physical
server
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Benefits include:
 Cost of ownership
 Hardware
 Licensing
 Power
 Cooling
 Space
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Functionality
 High Availability
 Resource Management
 Cloning
 Migration
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Virtualization
Types of Virtualization
Hardware
Partitions
Operating System
Partitions
Physical Partitions
Partitions
Binary Translation
- Physically isolated
- Native hardware speed
- Dedicated resources
- Must run same OS
- May support different
levels of same OS
- Limited fault isolation
- De-privileged kernel
- Near native speed
- Some code changes
required
- Run time translation
- Any hardware / OS
- Slower
Virtual Partitions
- Online Add / Remove
- Near native hardware speed
- Shared I/O
Shared Partitions
AIX and HP/UX
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Para-Virtualization
- Special O/S Build
- Any hardware/ Linux
- Faster
Hardware Virtualization
- Early support (Intel / AMD)
- Any O/S
- Will be fastest
- Shared CPU
- Dynamic CPU cycle allocation
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Virtual
Machines
Solaris
X86 / X86-64
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Virtualization
Supported Platforms
VENDOR
Oracle
HP
IBM
SUN
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2
3
4
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Product
Virtualization
Type
Processor
Platform
Operating
System(s)
Hard
Partition
Licensing
Basic
Support
Live
Migration
DB
RAC
DB
RAC
X86
Linux,
Windows
Pinned only
Yes
Yes³
Yes¹
Test
Physical Partition
IA, PA
HP-UX
Yes
Yes²
Yes³
N/A
N/A
vPar
Virtual Partition
IA, PA
HP-UX
Yes
Yes
Yes
N/A
N/A
Integrity Virtual Machines
Virtual Machine
IA
HP-UX
Capped only
Yes
No
N/A
N/A
LPAR¹
Virtual Partition
Power
AIX
Yes
Yes³
Yes³
N/A
N/A
dLPAR
Virtual Partition
Power
AIX
Yes
Yes
Yes
Test
Test
Micro-partitions
Shared Partition
Power
AIX
Capped only
Yes
Yes
Test
Test
VIO4
Shared storage
Power
N/A
N/A
Yes
Yes
N/A
N/A
WPAR
OS Partition
Power
AIX
No
Test
No
Test
No
zVM
Shared Partition
zSeries
Linux
No
Yes
No
N/A
N/A
Dynamic System Domains Physical Partition
Sparc
Solaris
Yes
Yes
Yes³
N/A
N/A
Logical Domains
Virtual Partition
Sparc
Solaris
No
Test
Test
N/A
N/A
Solaris Containers
OS Partition
Sparc
Solaris
Capped only
Yes
No
N/A
N/A
Oracle Virtual Machine
Virtual Machine (PV, HVM)
nPar
Supported with Oracle Database 11.0.7
Need to disable Numa for dynamic support.
Static support only.
VIO is an option for dLPAR and micro-partitions.
Information supplied by Oracle Corporation
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Virtualization
Certified Application Server Platforms
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The following virtualized platforms are certified for Oracle Application Server
Operating System
Virtualization / Partitioning Technology
Linux x86, x86-64
Oracle VM
Windows x86, x86-64
Oracle VM
IBM AIX POWER
IBM LPAR
IBM Linux POWER
IBM LPAR
Sun Solaris SPARC
Sun Containers (Solaris 10)
Sun Solaris x86, x86-64
Sun Containers (Solaris 10)
HP HP/UX PA RISC
nPar, vPar
HP HP/UX Itanium
nPar, vPar
HP Linux Itanium
nPar
HP Windows Itanium
nPar
On Solaris both global and local zones/containers are supported, but LDOMs are not supported
See http://www.oracle.com/technology/products/ias/hi_av/oracleas_supported_virtualization.html
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VMware
Oracle Support Status
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Limited support for Oracle products on VMware
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Oracle has not certified any of its products on VMware
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Oracle will support customers running Oracle products running on VMware
 for issues known to occur on the native OS
 for issues that can be demonstrated not to be a result of using VMware
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See Metalink Note 249212.1 - Support Position for Oracle Products running on
VMware virtualized environments for more details
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Virtualization
Hypervisor-Based Virtualization
Applications
Applications
Guest OS
Guest OS
Guest VM
Guest VM
Hypervisor
X86 or X86/64 Bare-Metal Server
CPU
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Memory
I/O
Network
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Xen Hypervisor
Overview
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Xen hypervisor
 Small, lightweight, software virtual machine monitor
 Supports x86 and x86-64 only
 Executes multiple virtual machines on one physical system
 Each virtual machine has its own guest operating system
 Originally developed at Cambridge University
 Now open source
 Included in
 Oracle Enterprise Linux 5.0 and above
 Red Hat Enterprise Linux 5.0 and above
 SUSE Linux Enterprise Server 10
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Enhanced version included in Oracle VM Server
Beware - Oracle VM Manager overrides
some Xen default properties
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Oracle VM
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Oracle VM
Overview
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Server virtualization software
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Supports both Oracle and non-Oracle applications
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Claimed to be three times more efficient than other server virtualization
products
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Backed by Oracle support
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Available for free download
 edelivery.oracle.com/oracle/vm
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Guests supported include:
 Linux
 Windows
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Runs on x86 and x86-64 based systems
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Oracle VM
Overview
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Oracle products certified with Oracle VM include:
 Oracle Database
 Oracle Fusion Middleware
 Oracle Applications
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Consists of
 Open Source server software
 integrated Web browser-based management console
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Oracle VM
Virtual Machines
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
Oracle VM allows users to create and manage Virtual Machines (VMs)
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VMs
 exist on same physical server
 behave like independent physical servers
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Each VM has its own
 virtual CPUs
 network interfaces
 storage
 operating system
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Oracle VM
Components
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Oracle VM Server
 Self-contained virtualization environment
 Provides lightweight, secure, server-based platform forrunning VMs
 Based on updated version of Xen hypervisor technology
 Includes Oracle VM Agent
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Oracle VM Agent
 Installed with Oracle VM Server
 Communicates with Oracle VM Manager for management of virtual
machines
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Oracle VM Manager
 Provides user interface to manage Oracle VM servers and resources
 Standard Application Development Framework (ADF) web applications
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Oracle VM
Architecture
Oracle VM Manager
Web Browser-based User Interface
Java-based Management Server
Oracle VM
Manager
Repository
Oracle VM Server
OracleVM
Agent
dom0
domU
domU
domU
Hypervisor
Host Hardware CPU, Network, Memory, Disk
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Oracle VM
Supported Hardware
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Oracle VM requirements
 32 bit or 64 bit host
 i686-class processor
 all Intel Pentium Pro or newer models
 Intel Pentium 4 recommended as a minimum
 all AMD Athlon/Duron processors or newer models
 AMD Athlon recommended as a minimum
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For unmodified guest operating systems CPU must provide hardware
virtualization support
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Hardware virtualization optionally provided by the following processors:
 Intel Pentium D, Core, Core2, Xeon
 AMD Athlon, Opteron
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Oracle VM
Supported Guest Operating Systems
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Oracle VM supports the following guest operating systems:
 Oracle Enterprise Linux 4
 Oracle Enterprise Linux 5
 Red Hat Enterprise Linux 3
 Red Hat Enterprise Linux 4
 Red Hat Enterprise Linux 5
 Microsoft Windows 2003
 Microsoft Windows Server 2003
 Microsoft Windows HP
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Note that Microsoft Windows is only supported on hardware virtualization
(HV) capable hardware
 Currently Windows runs significantly slower on Oracle VM than on native
hardware
 Oracle is developing paravirtualized Windows drivers to improve
performance of Windows on Oracle VM
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Oracle VM
Product Certification
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
Oracle VM is the only x86 based server virtualization environment on which
Oracle products are supported
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Oracle products currently certified with Oracle VM (September 2008) include:
 Oracle Database 10gR2 and11gR1
 Oracle RAC 10gR2 (10.2.0.4)
 Oracle Application Server 10gR2 and 10gR3
 Oracle Enterprise Manager 10.2.0.4
 Oracle Berkeley DB4.6
 Oracle TimesTen 7.0.3.1
 Oracle E-Business Suite11.5.10 and12
 Oracle PeopleSoft Enterprise 8.4.x and 9.0
 PeopleTools 8.49.07and above
 Oracle Siebel CRM 8.0
 Oracle Hyperion 9.3.1
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See Metalink Note 464754.1 - Certified Software on Oracle VM
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Oracle VM
Product Certification
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Only the following Application Server components are currently certified:
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SOA 10.1.3.1.0 with 10.1.3.3.0 patchset
WebCenter 10.1.3.2.0 with 10.1.3.3.0 patchset
Oralce Communication and Mobility Server 10.1.3.3.0 (Linux x86 only)
Oracle Data Integrator 10.1.3.3.0
Business Intelligence Enterprise Edition 10.1.3.3.0
Identity Management 10.1.4.0.1 and 10.1.4.2.0
Oracle Identify Federation 10.1.4.0.1 and 10.1.4.2.0
Oracle Virtual Directory 10.1.4.2.0
Oracle Access Manager 10.1.4.2.0
Oracle Identity Manager 9.1.0.0
Oracle Universal Content Management 10.1.3.3.1 (Linux x86 only)
Oracle Universal Records Management 10.1.3.3.1 (Linux x86 only)
See Metalink Note 464754.1 - Certified Software on Oracle VM
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Oracle VM
Oracle Single Instance Database Support
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As of September 2008 Oracle single instance databases are certified with
Oracle VM with the following restrictions
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x86 and x86-64 platforms
Oracle Enterprise Linux 4.x, 5.x, Red Hat Enterprise Linux 4.x, 5.x
Oracle 10.2.0.3 or above
Oracle VM 2.1 or above
Para-virtualized and hardware virtualized modes
 Use para-virtualized drivers in both modes
Windows supported in Oracle 11.1.0.7 and above
Live migration supported in Oracle 11.1.0.7 and above
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Oracle VM
Oracle RAC Database Support
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As of September 2008 RAC is certified with Oracle VM with the following
restrictions
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X86 32-bit platform only
Oracle Enterprise Linux 5.1 or above
Oracle 10.2.0.4 only
Oracle VM 2.1.2 only
Para-virtualized mode only
Static mode support only
No dynamic resource changes
No live migration
Oracle Recommendations
 Each RAC node should be deployed on a different physical server
 Use physical block devices for database files
 Do not over-commit CPUs
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Oracle VM
Oracle RAC Database Support
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Why would you want to run RAC on Oracle VM?
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Resource Management
 Control amount of CPU and memory used by each instance
Cloning
 For development, test and pre-production
Migration
 Move instance from one node to another
 Hardware must currently be identical
Live Migration
 Not supported with RAC
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Oracle VM
Oracle Support Costs
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Support costs (August 2008):
Price per system
Up to 2 physical
CPUs (sockets)
Price per system
Unlimited physical
CPUs (sockets)
Installable binaries
(both server and manager)
Free
Free
Oracle VM Premier Support (1 year)
$599
$1,199
Oracle VM Premier Support (3 year)
$1,797
$3,597
Oracle VM Premier Support includes
 Access to software and updates through the Unbreakable Linux Network
 24x7 global support
Pricing / licensing for Oracle products used with Oracle VM is unaffected
 CPU licensing is still based on physical processors
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Oracle VM
Server
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Oracle VM Server
Installation
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Oracle VM Server installation is similar to current Enterprise Linux installation
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Oracle VM Server
Installation
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Default partitioning layout for an 80GB disk:
Device
Start
End
Size
Type
Mount Point
hdb1
1
13
101M
ext3
/boot
hbb2
14
485
3074M
ext3
/
hdb3
486
9598
72112M
ocfs2
/OVS
hdb4
9599
9729
1027M
Extended
hdb5
9599
9729
1027M
swap
/dev/hdb
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
Defaults can be overwritten during installation
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Note that all unallocated storage is assigned to /OVS
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Component list cannot be updated
 Package installation takes around 6 minutes
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Oracle VM Server
Virtualization Types
28

Oracle VM servers can be
 Para virtualized
 Hardware virtualized
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Para virtualization
 Requires virtualization aware kernel
 Available in Enterprise Linux 4 and 5 (Oracle and Red Hat)
 Currently best performance

Hardware virtualization
 Can run unmodified kernels e.g Enterprise Linux 3, Windows etc
 Requires virtualization aware CPUs
 Virtualization must be enabled in BIOS
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Oracle VM Server
Hardware Virtualization
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
Why is para-virtualization currently faster?

Intel currently supports hardware virtualization of CPU
 VT-x on x86 / x86-64
 VT-i on Itanium
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In future processors Intel will support hardware virtualization for:
 Directed I/O
 VT-d
 Memory / Page Tables
 Extended Page Tables (EPT)
 Networking Devices
 VT-c
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When these are available hardware virtualization will be faster then paravirtualization

Note: AMD also provides hardware virtualization
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Oracle VM Server
Hardware Virtualization
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Oracle VM Server
Paravirtualization
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Para-virtualization requires a xen-aware kernel
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Available in Enterprise Linux 4 Update 5 and above
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For example for paravirtualized kernel /etc/grub.conf contains:
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Enterprise Linux (2.6.18-8.el5xen)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5xen ro root=/dev/VolGroup00/LogVol00
console=xvc0 rhgb quiet
initrd /initrd-2.6.18-8.el5xen.img
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Default kernel is:
[root@server11 ~]# uname -r
2.6.18-8.1.15.1.16.el5xen
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Oracle VM Server
Installation

Example of /etc/issue for para-virtualized guest
Oracle VM server release 2.1.2
Hypervisor running in 64 bit mode with NO Hardware Virtualization support.
Network :
Management Interface :
If : eth0(Up) Mac : 00:17:3F:99:F3:7C IP address : 192.168.2.111
Configured Networks and Bridges :
If : eth0
Mac : 00:17:3F:99:F3:7C
If : eth1
Mac : 00:17:3F:9A:03:B9
If : xenbr0
Mac : FE:FF:FF:FF:FF:FF
If : xenbr1
Mac : FE:FF:FF:FF:FF:FF
CPU :
cpu family
model
model name
: 6
: 15
: Intel(R) Pentium(R) Dual
CPU
E2160
@ 1.80GHz
[root@server11 ~]# cat /etc/redhat-release
Oracle VM server release 2.1.2
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Oracle VM Server
Installation

Example of /etc/issue for hardware virtualized guest
Oracle VM server release 2.1.2
Hypervisor running in 64 bit mode with Hardware Virtualization support.
Network :
Management Interface :
If : eth0(Up) Mac : 00:04:23:DC:1E:78 IP address :
Configured Networks and Bridges :
If : eth0
Mac : 00:04:23:DC:1E:78
If : eth1
Mac : 00:04:23:DC:1E:79
If : xenbr0
Mac : 00:04:23:DC:1E:78
If : xenbr1
Mac : 00:04:23:DC:1E:79
CPU :
cpu family
model
model name
: 6
: 15
: Intel(R) Xeon(R) Dual
CPU
X5355
@ 2.66GHz
[root@server11 ~]# cat /etc/redhat-release
Oracle VM server release 2.1.2
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Oracle VM Server
Xen Configuration
34
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Xen is configured in /etc/sysconfig/xendomains
 It should not be necessary to modify this file
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Services installed for xen include:
 xend
 xendomains
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Oracle VM Server
OCFS2 Configuration
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OCFS2 is configured in /etc/ocfs2/cluster.conf
Initially configured as single node. For example:
node:
ip_port = 7777
ip_address = 192.168.2.111
number = 0
name = server11.juliandyke.com
cluster = ocfs2
cluster:
node_count = 1
name = ocfs2
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Should be extended to contain all servers in pool
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Services installed for OCFS2 include:
 o2cb
 ocfs2
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Oracle VM Server
OVS Configuration
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OVS release is reported in /etc/ovs-release
[root@server11 ~]# cat /etc/ovs-release
Oracle VM server release 2.1.2
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Services installed for Oracle VM include:
 ovs-agent
 ovsrepositories
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Oracle VM agent is configured in /etc/ovs-agent/agent.ini
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Oracle VM Server
Shared Storage
37
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Multiple Oracle VM Servers must share storage
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Oracle VM uses OCFS2 by default
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Shared directory is created by Oracle VM Server installation
 Called /OVS
 Created as ocfs2
 Must be manually extended to other VM servers in pool
 Contains various pools including:
 iso_pool - contains ISO images
 running_pool - contains run-time images for guests
 seed_pool
 publish_pool
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Oracle VM Server
Guest Installation
38

Linux guest installation uses Anaconda
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Guest operating system MUST be installed from ISO images
 Cannot directly mount CD/ROM
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Installation can use
 NFS - from local or remote server
 HTTP - from remote web server
 FTP - from remove FTP server

See Metalink Note 466005.1 - Mounting an ISO for Paravirtualized Guest
Operating System Installation
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Oracle VM Server
Guest Installation
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Guest can be installed using
 virt-install
 operating system utility
 VM Manager
 GUI-based installation
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Install utilities are not entirely compatible e.g.
 virt-install creates configuration file in /etc/xen
 e.g. /etc/xen/guest11
 VM Manager creates additional configuration file called vm.cfg
 e.g. /OVS/running_pool/guest1/vm.cfg
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Prior to first installation create Oracle VM standard pools in /OVS:
[root@server11]# mkdir /OVS/running_pool
[root@server11]# mkdir /OVS/iso_pool
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Oracle VM Server
Guest Installation using NFS
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NFS can be mounted on the local host
NFS services must be started:
[root@server11]# service portmap start
Starting portmap:
[ OK ]
[root@server11]# service nfs start
Starting NFS services:
Starting NFS quotes:
Starting NFS daemon:
Starting NFS mountd:
[
[
[
[

]
]
]
]
Firewall must be disabled:
[root@server11]# service iptables stop
Flushing firewall rules:
Setting chains to policy ACCEPT: filter
Unloading iptables modules:
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OK
OK
OK
OK
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[
[
[
OK
OK
OK
]
]
]
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Oracle VM Server
Guest Installation using NFS
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If the installation software is delivered in a single (DVD-ROM) image
Create a mount point
[root@server11]# mkdir /el
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If the installation is on a DVD then mount the device
[root@server11]# mount /dev/cdrom /el
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If the installation software is in an ISO file mount as a loopback device
[root@server11]# mount -o ro,loop /dev/cdrom /el
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Export the file system
[root@server11]# exportfs *:/el
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Verify the file has been exported
[root@server11]# exportfs
/el
<world>
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Oracle VM Server
Guest Installation using NFS
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If the installation software is delivered in multiple (CD-ROM) images
Create a directory
[root@server11]# mkdir /el
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If the installation is on a CD-ROM then mount the device
[root@server11]# mount /dev/cdrom /media/iso
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If the installation software is in an ISO file mount as a loopback device
[root@server11]# mount -o ro,loop <filename> /media/iso
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Copy the contents to the /el directory
[root@server11]# cd /media/iso
[root@server11]# cp -var * /media/iso
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Unmount the directory
[root@server11]# cd
[root@server11]# umount /media/iso
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Repeat for remaining disks or ISO images
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Export the file system as shown on previous slide
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Oracle VM Server
virt-install
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The virt-install can be executed by the root user either interactively or using
arguments
For example interactively (as root)
[root@server11]# virt-install
What is the name of your virtual machine? guest1
How much RAM should be allocated (in megabytes?) 512
What would you like to use as the disk (path)? /OVS/running_pool/guest1
How large would you like the disk (/OVS/running_pool/guest1) to be
(in gigabytes)? 5
Would you like to enable graphics support? (yes or no) yes
What is the install location? nfs:server11:/el
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Using arguments:
[root@server11]# virt-install \
--name guest1 \
--ram=512 \
--file=/OVS/running_pool/guest1 \
--file-size=5 \
--location=nfs:192.168.2.111:/el \
--nographics
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Oracle VM Server
virt-install

During installation of Enterprise Linux guest you will be prompted for a
TCP/IP configuration

Ensure that a Gateway IP address is specified otherwise installation will fail
with the following error:
That directory could not be mounted from the server
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44
By default guest O/S will be installed in /dev/xvda
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Oracle VM Server
virt-install
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During initialization virt-install always reports the following error
libvir: Xen Daemon error: GET operation failed:
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This error can be ignored
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Folllowing restart of new operating system virt-install using text graphics
reports the following error
libvir: Xen Daemon error: internal error domain information incomplete,
missing kernel
Entity: line 25: parser error : Opening and ending tag mismatch: os line 5
and domain
</domain>
Entity: line 26: parser error : Premature end of data in tag domain line 1


45
This error can also be ignored
See Metalink Note 466563.1 - Oracle VM: First Boot after Installation of Guest
OS Fails with Text Console
© 2008 Julian Dyke
juliandyke.com
Oracle VM Server
Xen Configuration

Default virt-install of a guest O/S creates configuration /etc/xen
 e.g. /etc/xen/guest1
# Automatically generated xen config file
name = "guest1"
memory = "512"
disk = [ 'file:/OVS/running_pool/guest1,xvda,w', ]
vif = [ 'mac=00:16:3e:6d:c2:92, bridge=xenbr0', ]
uuid = "286c380b-4cd6-9308-5987-4ff05d4d2278"
bootloader="/usr/bin/pygrub"
vcpus=1
on_reboot
= 'restart'
on_crash
= 'restart'
46
© 2008 Julian Dyke
juliandyke.com
Oracle VM Server
xm utility

xm is the Xen management user interface

To list valid options
[root@server11]# xm help

To print the message buffer
[root@server11]# xm dmesg

To start a VM
[root@server11]# xm create -c /etc/xen/guest1

To shutdown a VM
[root@server11]# xm shutdown guest1
47
© 2008 Julian Dyke
juliandyke.com
Oracle VM Server
xm utility

To list running VMs
[root@server11]# xm list
Name
Domain-0
guest1
guest2

ID
0
9
10
Mem VCPUs
468
2
256
1
256
1
State
r-----b----b----
Time(s)
254.1
19.7
16.0
To start a console session
[root@server11]# xm console 9
48

where 9 is the ID in xm list

To end the console session press CTRL-]
© 2008 Julian Dyke
juliandyke.com
Oracle VM Server
xentop utility




Similar to top
Same as xm top
Executed from dom0
Shows current state of all domains including dom0 and guests
[root@server11 ~]# xentop

For example
xentop - 10:23:58
Xen 3.1.4
3 domains: 1 running, 2 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 1037820k total, 1034928k used, 2892k free
CPUs: 2 @ 1800MHz
NAME STATE
CPU(sec) CPU(%)
MEM(k) MEM(%) MAXMEM(k) MAXMEM(%) VCPUS
NETS NETTX(k) NETRX(k) VBDS
VBD_OO
VBD_RD
VBD_WR SSID
Domain-0 -----r
256
0.3
479232
46.2
no limit
n/a
2
8 1358489
9219
0
0
0
0
0
guest1 --b--20
0.1
262144
25.3
262144
25.3
1
1
6
9
1
0
3295
1834
0
guest2 --b--21
0.1
262144
25.3
262144
25.3
1
1
7
0
1
0
3240
1727
0
49
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Agent
50
© 2008 Julian Dyke
juliandyke.com
Oracle VM Agent
Management


By default Oracle VM Agent is configured with username admin and the
password specified during installation
To check current status of Oracle VM Agent
[root@server11 ~]# service ovs-agent status
ok! process OVSPolicyServer exists
ok! process OVSMonitorServer exists
ok! process OVSLogServer exists
ok! process OVSAgentServer exists
ok! OVSAgentServer is alive

To start Oracle VM Agent
[root@server11] service ovs-agent start
OVSAgentServer is now starting...
OVSAgentServer started.

To stop Oracle VM Agent
[root@server11] service ovs-agent stop
OVSAgentServer shutdown...
OVSAgentServer stopped.
51
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Manager
52
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Overview

53
Oracle VM Manager
 Provides user interface to manage Oracle VM servers
 Standard Application Development Framework (ADF) web applications
 Manages VM lifecycle
 Creates VMs
 from installation media
 from VM templates
 Deletes VMs
 Power On / Off VMs
 Uploads VMs
 High Availability Deployment
 Live migration
 Dynamic Resource Management
 CPU, memory etc
 Static Resource Management
 ISO files, VM templates etc
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Installation

Insert CD-ROM or mount ISO image as loopback device
[root@server12]#

mount -o ro,loop /dev/cdrom /mnt
Run installer
[root@server12 ~]# /mnt/runInstaller.sh
Welcome to Oracle VM Manager 2.1.2
Please enter the choice: [1|2|3]
1. Install Oracle VM Manager
2. Uninstall Oracle VM Manager
3. Upgrade Oracle VM Manager
Starting Oracle VM Manager 2.1.2 installation ...
Do you want to install a new database or use an
existing one? [1|2]
1. Install a new Oracle XE database on localhost
2. Use an existing Oracle database in my network

54
Installer prompts for port numbers and passwords
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Starting and Stopping VM Manager


The Oracle VM Manager application runs within an OC4J container
To check the status of Oracle Containers for J2EE:
[root@server12]# service oc4j status

To start the Oracle VM Manager:
[root@server12]# service oc4j start

To stop the Oracle VM Manager:
[root@server12]# service oc4j stop

To access Oracle VM Manager home page from a browser use:
http://<server_name>:8888/OVS
55
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Accessing VM Manager

To access Oracle VM Manager home page from a browser use:
http://<server_name>:8888/OVS
56
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Server Pools
57

Multiple Oracle VM servers can be grouped into Server Pools

Each server in a server pool has access to shared storage
 Can be NFS, SAN or iSCSI

VMs can be started on any server in the pool that is available and has
resources free

VMs can be live Migrated between any servers in the pool
 Except for RAC instances

VMs can be auto-restarted across any servers in the pool

For each VM a Preferred Server List can optionally be specified
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Server Pools
Oracle VM Manager
VM
VM
VM
VM
VM
VM
Server Pool 1
Oracle
VM
Server
Oracle
VM
Server
Shared
Storage
58
© 2008 Julian Dyke
VM
VM
VM
VM
Server Pool 2
Oracle
VM
Server
Oracle
VM
Server
Oracle
VM
Server
Shared
Storage
juliandyke.com
Oracle VM Manager
Server Pool Roles
59

Each Oracle VM Server can have up to three roles:
 Server Pool Master Agent
 Utility Server
 Virtual Machine Server

Each Server Pool must contain
 One Server Pool Master Agent
 One or more Utility Servers
 One or more Virtual Machine Servers

One Oracle VM Server can perform all three roles

Alternatively each role can be performed by different servers
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Server Pool Master Agent

Each Server Pool has one (and only one) Server Pool Master Agent

Master agents manage:
 Load balancing
 Live migration
 HA restarts

All Management Agents in pool communicate with Master Agent
Master Agent communicates with Management Server

60

Server Pool Master Agent can:
 be dedicated server (recommended for availability)
 host guest VMs

If Management Server fails, Server Pool Master Agents continue to operate

If Server Pool Master Agent fails
 Virtual machines within Server Pool continue to operate
 Live migration or High Availability functionality is not available
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Utility Server
61

Responsible for I/O intensive operations such as copying or moving files

Used when creating or removing
 virtual machines
 servers
 server pools

There can be one or more utility servers in a Server Pool
 If there is more than one, Server Pool Master chooses Utility Server with
maximum CPU resources to complete task
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Server Pool Configuration

62
After installation Oracle VM Manager will automatically run the Server Pool
Wizard
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Server Pool Configuration
63
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Server Pool Configuration
64
© 2008 Julian Dyke
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Oracle VM Manager
Server Pool Configuration
65
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Templates


66
Oracle supplies some templates which can be used to rapidly create VMs
Operating system templates available in September 2008 included:
Template
Kernel
VCPUs
RAM(GB)
OVM_EL4U5_X86-HVM-10GB
2.6.9-55.0.1.2.100.1.ELsmp
2
2
10
OVM_EL4U5_X86_64-HVM-10GB
2.6.9-55.0.1.2.100.1.ELsmp
2
2
10
OVM_EL4U5_X86-HVM-4GB
2.6.9-55.0.1.2.100.1.ELsmp
1
1
4
OVM_EL4U5_X86_64-HVM-4GB
2.6.9-55.0.1.2.100.1.ELsmp
1
1
4
OVM_EL4U5_X86-PVM-10GB
2.6.9-55.0.1.2.9.1.ELxenU
2
2
10
OVM_EL4U5_X86-PVM-4GB
2.6.9-55.0.1.2.9.1.ELxenU
1
1
4
OVM_EL5_X86_64_HVM_10GB
2.6.18-8.1.15.100.1.el5
2
2
10
OVM_EL5_X86_64_HVM_4GB
2.6.18-8.1.15.100.1.el5
1
1
4
OVM_EL5U1_X86_64_HVM_10GB
2.6.18-53.0.0.100.1.el5
2
2
10
OVM_EL5U1_X86_64_HVM_4GB
2.6.18-53.0.0.100.1.el5
1
1
4
OVM_EL5U1_X86_64_PVM_10GB
2.6.18-53.1.4.9.1.el5xen
2
2
10
OVM_EL5U1_X86_64_HVM_4GB
2.6.18-53.1.4.9.1.el5xen
1
1
4
OVM_EL4U5_X86_HVM_ORACLE_11G
2.6.9-55.0.12.100.1.ELsmp
1
1
4
OVM_EL4U5_X86_PVM_ORACLE_11G
2.6.9-55.0.12.9.1.ELxenU
1
1
4
© 2008 Julian Dyke
Storage(GB)
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Oracle VM Manager
Guest VM Creation
67
© 2008 Julian Dyke
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Oracle VM Manager
Guest VM Creation
68
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Guest VM Creation
69
© 2008 Julian Dyke
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Oracle VM Manager
Guest VM Creation
70
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Oracle VM Manager
Guest VM Creation
71
© 2008 Julian Dyke
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Oracle VM Manager
Guest VM Creation
72
© 2008 Julian Dyke
juliandyke.com
Oracle VM Manager
Templates

Oracle Database 11g disk images available in September 2008 included:


73
Oracle Database 11g x86
Oracle Database 11g x86-64

Disk images are also available for:
 Oracle Enterprise Manager
 Siebel

See Metalink Note 551261.1 - Oracle VM Guest Templates for Oracle
Enterprise Linux
© 2008 Julian Dyke
juliandyke.com
Oracle VM
Conclusions
74

Promising technology
 Full hardware virtualization should be very impressive
 Could be really useful for High Availability

Still relatively immature technology
 Few customers using Oracle VM in production

Still numerous installation and operational issues
 Beware of conflicts between Oracle VM Manager and Xen tools
 Use Oracle VM Manager if possible
 Documentation is relatively weak
 Often several ways to achieve same goal
 Not obvious which is best

Start investigating now
 Worth considering when planning
 Probably not production-ready yet but not far away
© 2008 Julian Dyke
juliandyke.com
References
75

http://www.oracle.com/technologies/virtualization/index.html

http://www.oracle.com/technology/documentation/vm.html

http://wiki.oracle.com/page/Oracle+VM
© 2008 Julian Dyke
juliandyke.com
Acknowledgements

Thanks to the following for their assistance with the development of this
presentation:





Steve Shaw - Intel Corporation
Martin Bach - eDBA
Simon Haslam - Veriton
Michael Timpanaro-Perrotta - Oracle
Adam Hawley - Oracle
[email protected]
76
© 2008 Julian Dyke
juliandyke.com