Building an Oracle Grid with Oracle VM on Dell Blade Servers and

EqualLogic iSCSI storage

Kai Yu David MarSr. System Engineer Consultant Engineering ManagerDell Global Solutions Engineering Dell Global Solutions Engineering

ABOUT THE AUTHORS

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Kai Yu is a Senior System Engineer and works within the Dell Oracle Solutions Lab. He has over 14 years Oracle DBA and Solutions Engineering experience. His specialties include Oracle RAC, Oracle EBS and OVM. He is an avid author of various Oracle technology articles and frequent presenter at Oracle Open World and Collaborate. He is also the Oracle RAC SIG US Event Chair.

David Mar is an Engineering Manager for the Dell | Oracle Solutions group. He directs a team across the globe to create Oracle RAC reference configurations and build best practices based upon tested and validated configurations. He has worked for Dell since 2000 and has a MS in Computer Science and BS in Computer Engineering from Texas A&M University.

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COMPONENTS WITHIN THE GRID

Physical View

Logical View

Physical View

Scalability

dom1dom2

dom3 dom4

OVMServers

Scale –out blades

Database 1Database 2

Database 3Database 4

Volume 1Volume 2

Volume 3

OS

Compute Virtualization Roles / Components

• Oracle VM• Partitioning single server • Consolidation

• Oracle RAC• Scale-up through

scale-out of hw• DB Scalability only

OS

OS OS OS

OS OS

DB / app

OS

DB / app

Virtual Grid Physical Grid

VM Server Pool

OS OS

DB 1

DB 2

DB 3

RAC DB

Testing Oracle RAC infrastructure with minimal hardware Testing Oracle RAC pre-production areas App Servers testing and production Good to maximize server utilization rates Consolidation for low utilization servers Partitioning one application from another

OVM | VIRTUALIZATION’S ROLE

OVERVIEW OF EQUALLOGIC

4 Gigabit network ports per controller 2 GB cache per controller Intelligent automated management tools Self Managing Array Linear Scalability Data Protection Software

Volume 2Volume 3

Volume 1

Storage Pool

STORAGE LAYER ON EQUALLOGIC

EqualLogic and ASM work well together http://www.dell.com/oraclePerformance Implications of running Oracle ASM with Dell EqualLogicTM PS series storage

EqualLogic ASM Best Practices for Oraclehttp://www.dell.com/oracleBest Practices for Deployment of Oracle® ASM with DellTM EqualLogicTM PS iSCSI Storage System

Peer Storage architecture Setup Quickly Linear Performance Improvements

Volume 2Volume 3

Volume 1

Storage Pool

SERVER LAYER ON BLADES

Oracle RAC

Servers

Front View Back View

Energy efficient PowerEge M100e enclosure11th generation blade servers available

Intel “Nehalem” processorsIntel QuickPath memory technology

Three redundant fabrics16 half height blade servers

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GRID Reference Configuration POC Project

1 – PHYSICAL GRID

2 – THE VIRTUAL GRID

3 – MANAGEMENT

• Oracle Grid Control to manage both physical Grid and virtual Grid

• Consider HA for production management• Manage externally out of the Blade Cluster,

to avoid single point of failure • Dell Servers enable health monitoring from EM

4 - STORAGE

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GRID IMPLEMENTATION

GRID IMPLEMENTATION

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Implementation Tasks– Configure Grid Control Management Infrastructure– Configure EqualLogic Shared storage– Configure Physical Grid– Configure Virtual Grid

Grid Control Management Infrastructure Configuration– OEL 4.7 64 bit was installed for Grid control server– Oracle Enterprise Manager Grid control 10.2.0.3 installed:

with OMS server and repository database and Grid control agent – Grid control 10.2.0.5 with patch 3731593_10205_x84_64

Apply to OMS server, repository, and the agent– Enable Virtual Management Pack with patch 8244731 to OMS,

Install TightVnc Java Viewer to OMS server– Restart OMS server

GRID IMPLEMENTATION: EQUALLOGICSTORAGE

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EqualLogic shared storage configuration– Storage volumes for the physical Grid

– Storage volumes for the virtual Grid

Volume Size Raid Used for OS Mappingblade_crs 2GB 10 OCR/Votingdisk Yes

blade_data1 100GB 10 Data for DB1 ASM diskgroup1blade_data2 100GB 10 Data for DB2 ASM diskgroup2blade_data3 150GB 10 Data for DB3 ASM diskgroup3blade_data5 150GB 10 Data for DB4 ASM diskgroup5

Volume Size Raid Used for OS Mapping

blade_data4 400GB 10 VM Repositories /OVS

blade_data6 500GB 10 VM Repositories /OVS/9A87460A7EDE43EE92201B8B7989DBA6

vmcor1-5 1GB each 10 OCR/vogtingdisk 2XOCRs/3Xvotingdisks

vmracdb1 50GB 10 Data for RAC DB ASM diskgroup1

vmracdb2 50GB 10 Data for RAC DB ASM diskgroup2

GRID IMPLEMENTATION: EQUALLOGICSTORAGE

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EqualLogic storage management console

GRID IMPLEMENTATION: PHYSICALGRID

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Physical Grid Configuration : 8-node 11g RAC– Network configuration

– iSCSI storage connections • Open-iSCSI administration utility to configure host access to storage • volumes: eth2-iface on eth2, eth3-iface on eth3• Linux Device Mapper to establish mutipath devices to storage alias:

/etc/multipath:multipaths {

multipath { wwid 36090a028e093dc7c6099140639aae1c7alias ocr-crs

}– Check multipath devices in /dev/mapper: /dev/mapper/ocr-crsp1

Network Interface IO modules Connections IP addresseth0 A1 Public Network 155.16.9.71-78eth2 B1 iSCSI connection 10.16.7.241-255(odd)eth3 B2 iSCSI connection 10.16.7.240-254(odd)

eth4,eth5 C1,C2 Bonded to bond0 192.168.9.71-78VIP Virtual IP for 11g RAC 155.16.9.171-178

GRID IMPLEMENTATION: PHYSICALGRID

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– Use block devices for 11g Clusterware and RAC databases• OEL 5 no longer supports raw devices,• Use block devices for 11g clusterware/RAC databases• /etc/rc.local to set proper ownerships and permissions

– Configure 11g RAC database Infrastructure• 11g RAC clusterware configuration:

private interconnect : bond0: 192.168.9.71-782 x OCRs and 3 X votingdisks on mutipath devices

• 11g ASM configuration: ORA_ASM_HOME =/opt/oracle/product/11.1.0

ASM instances provide the storage virtualization• 11g RAC software to provide the database service

ORA_HOME=/opt/oracle/product/11.1.0/db_1 • Grid control agent 10.2.0.5 to connect to OMS server

– Consolidate multiple databases

GRID IMPLEMENTATION: PHYSICALGRID

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• Sizing the DB requirement: CPU, IO and memory• Determine storage needs and # of DB instances• Determine which nodes to run the database• Provision the storage volumes and create the ASM diskgroup• User DBCA to create the database using the ASM diskgroups• For some ERP applications, convert the installed DB to RAC

– Examples of Pre-created Databases

GRID IMPLEMENTATION: PHYSICALGRID

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GRID IMPLEMENTATION: PHYSICALGRID

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– Scale out the physical Grid Infrastructure• Consolidate more databases to the Grid• Increase capability of the existing databases• Scale out the storage:

a. add additional Equallogic array to the storage groupb. expand existing or create new volumesc. make new volume accessible to the serversd. create ASM diskgroup or add partition to the existing

diskgroup or resize the partition of an diskgroup [1]• Scale the Grid by adding servers: Use 11g RAC add node

procedure to add new node to the cluster and add the• Expand the database to additional RAC nodes:

Use the adding instance procedure of enterprise manager to add new database instance to the database [2]

• Dynamically move the database to less busy node:User the adding instance and removing instance of enterprisemanager to add new database instance to the database [2]

GRID IMPLEMENTATION: VIRTUAL GRID

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Implementation Tasks– Virtual servers Installation– Virtual server network and stroage configuration.– Connect VM servers to the Grid Control– Management VM infrastructure through Grid control– Create guest VM using VM template– Manage the resources of guest VMs.

Virtual servers Installation– Prepare local disk and enable virtualization on BIOs– Install Oracle VM server 2.1.2 – Change Dom0 memory : /boot/grub/menu.lst:

edit line: kernel /xen-64bit.gz dom0_mem=1024M– Ensure VM agent working: #service ovs-agent status

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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Oracle VM server network configuration

– eth0 : public in dom0, presented to domU through xenbr0– eth2, eth3: iSCSI connections– eh4 and eth4 bonded to bond0 for the private interconnect

between VMs for 11g RAC configuration through xenbr1– Secure OVM agent is running: service ovs-agent status

GRID IMPLEMENTATION: VIRTUAL GRID

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– Customize the default Xen bridge configurationa. Stop the default bridges”/etc/xen/scripts/network-bridges stopb. Edit /etc/xen/xend-config.sxp:

replace line: (network-script network-bridges) with (network-script network-bridges-dummy)

a. Edit /etc/xen/scripts/network-bridges-dummy : /bin/trueb. Create infcg-bond0, ifcfg-xenbr0, ifcfg-xenbr1 scripts in

/etc/sysconfig/network-scripts

dom0 IO modules connection IP domU

eth0 A1 Public Network 155.16.9.71-78 eth0

eth2,eth3 B1, B2 iSCSI connections 10.16.7.238-235

eth4,eth5 C1,C2 Bonded to bond0 192.168.9.82-85 eth1

GRID IMPLEMENTATION: VIRTUAL GRID

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ifcfg-eth0: ifcfg-eth4 ifcfg-bond0 ifcfg-xenbr0 ifcfg-xenbr1DEVICE=eth0 DEVICE=eth4 DEVICE=bond0 DEVICE=xenbr0 DEVICE=xenbr1

ONBOOT=yes TYPE=Ethernet ONBOOT=yes ONBOOT=yes ONBOOT=yesBOOTPROTO=none MASTER=bond0 BOOTPROTO=none TYPE=Bridge TYPE=BridgeBRIDGE=xenbr0 USERCTL=no BRIDGE=xenbr1 IPADDR=155.16.9.82 TYPE=Bridge ONBOOT=yes NETMASK=255.255.0.0 NETMASK=255.255.255.0

restart network services: #service network restartcheck Xen bridges: [root@kblade9 scripts]# brctl show

bridge name bridge id STP enabled interfacesxenbr0 8000.002219d1ded0 no eth0xenbr1 8000.002219d1ded2 no bond0

– Configure shared storages on dom0 for VM servers• For OVM repositories : blade_data4: 400GB, Blade_data6_ 500GB• For 11g RAC shared disks: OCRs, votingdisks, ASM diskgroups• Configure iSCSI and multipath devices on dom0

Use iSCSI admin tool and Linux DM as the physical serverCheck the multipath devices : ls /dev/mapper/*

/dev/mapper/blade-data6 /dev/mapper/mpath5 /dev/mapper/ovs_data4p1/dev/mapper/blade-data6p1 /dev/mapper/vmocr-css1 /dev/mapper/vmocr-css1p1/dev/mapper/vmracdb1 /dev/mapper/vmracdb1p1 /dev/mapper/ovs_data4

GRID IMPLEMENTATION: VIRTUAL GRID

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Convert OVM repository to the shared disks: configure OCFS2a) Edit /etc/ocfs2/clutser.conf b) service o2cb stop

C) • Fcb

–d) # mkfs.ocfs2 -b 4k -C 64k -L ovs /dev/mapper/ovs_data4p1e) umount /OVSf) edit /etc/fstab:#/dev/sda3 /OVS ocfs2 defaults 1,0

/dev/mapper/ovs_data4p1 /OVS ocfs2 _netdev,datavolume,nointr 0 0

GRID IMPLEMENTATION: VIRTUAL GRID

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g) mount ocfs2 partitions: mount -a -t ocfs2h) create directories under /OVS: running_pool, seed_pool,sharedDiski) repeat steps a-h on all the VM servers

• Add additional volume to the OVS repositories

– Connect the VM servers to Enterprise Manager Grid Control• Meet pre-requisites:

a. Oracle user with oinstall group b. Oracle user’s ssh user equivalence between dom0 & OMS

Sdsadfasd

GRID IMPLEMENTATION: VIRTUAL GRID

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c. Create /OVS/provxyd. Oracle user sudo privileges: visudo /etc/sudoers

Add line: oracle ALL=(ALL) NOPASSWD: ALLComment out line: Defaults requiretty

• Create VM server Pool: login to Grid control

GRID IMPLEMENTATION: VIRTUAL GRID

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• Add additional VM servers to the VM server pool

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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Create Guest VMs using VM template– Virtual Machine as node of Virtual Grid– Methods of guest VMs: VM template; install media; PXE boot– Import a VM template

• Download OVM_EL5U2_X86_64_11GRAC_PVM.gz to repository• Discover VM template from Grid control Virtual Central

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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– Create VM using the template

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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• Add additional disk to the VM

• Attach shared disk to the VM

• s

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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• Images files in repository:Local disk:

Shared disk

• Disks as resources for VM:

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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• Disks shown in VM as the virtual disk partitions:

• Attached the storage to to the guest VM a) vm.cfg: disk = [''file:/OVS/sharedDisk/racdb.img,xvdc,w!', b) vm.cfg: disk = ['‘phy: /dev/mapper/vmracdbp1, xvdc,w!',

• Exposed Xen bridge for virtual network interfacevm.cfg:vif = ['bridge=xenbr0,mac=00:16:3E:11:8E:CE,type=netfront','bridge=xenbr1,mac=00:16:3E:50:63:25,type=netfront',]xenbr0 - eth0 in the guest VMxenbr1 eth1 in the guest VM

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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• Storage/Network configuration for 11g RAC on VMs:

ORACLE VIRTUALIZATIONINFRASTRUCTURE IMPLEMENTATION

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Consolidate enterprise applications on the Grid– Applications and middleware on the virtual Grid

• Create a guest VM using Oracle OEL 5.2 template• Deploy application on the guest VM • Build the VM template of the VM• Create new guest VMs based on the VM template

– Deploy database service on the physical Grid• Provision adequate size of storage volume from SAN• Make the volume accessible to all the physical Grid Nodes• Create the ASM diskgroup• Create database service on the ASM diskgroup• Create application database schema on the database • Establish the application database connections

– Deploy DEV/Test Application suite on the virtual Grid• Multi-tier nodes are on the VMs• Fast deployment based on templates

CASE STUDIES OF GRID HOSTING APPLICATIONS

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Grid Architecture to host applications– Oracle Applications E-Business suites on RAC/VM

• Three Applications Tier nodes on three VMs• Two Database Tier nodes on Two node RAC.

– Oracle E-Business Suite single node on Virtual Grid• Both Applications tier and Database tier node on VMs

– Banner applications on physical/virtual Grid • Two Applications Tier nodes on two VMs• Two Database Tier nodes on Two node RAC

– Provisioning Oracle 11g RAC on Virtual Grid• Two Database RAC nodes on two VMs• 11g RAC provisioning by Grid control Provisioning Pack

11g RAC provisionging procedure• Add additonal RAC node on new VM Grid control Provisioning

Pack Add node Procedure

CASE STUDIES OF GRID HOSTING APPLICATIONS

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Grid Architecture to host applications

CASE STUDIES OF GRID HOSTING APPLICATIONS

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Virtual Grid shown on Grid Control Virtual Central

SUMMARY

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• Dell Grid POC Project: Pre-built Grid with physical and virtual grids• Grid control as the unified management solution for the Grid• Dell blades as the platform of the Grid: RAC node and VM servers• EqualLogic provides the shared storage for the physical and virtual

Grid• The Grid provides the infrastructure to consolidate the enterprise

applications as well as the RAC databases• Acknowledge the support of Oracle engineers: Akanksha Sheoran,

Rajat Nigam, Daniel Dibbets, Kurt Hackel, Channabasappa Nekar, Premjith Rayaroth, and Dell Engineer: Roger Lopez

• Related OpenWorld Presentations:– ID#: S308185, Provisioning Oracle RAC in a Virtualized Environment,

Using Oracle Enterprise Manager, 10/11/09 13:00-14:00, Kai Yu & Rajat Nigam

– ID#: S310132, Oracle E-Business Suite on Oracle RAC and Oracle VM: Architecture and Implementation, 10/14/09 10:15 -11:15 Kai Yu and John Tao

References:

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1. Best Practices of Deployment of Oracle® ASM with Dell EqualLogic PS iSCSI Storage System, Dell White Paper

2 . Oracle Press Release: Oracle® Enterprise Manager Extends Management to Oracle VM Server Virtualization

3. Oracle® Enterprise Manager Concepts 10g Release 5 (10.2.0.5)Part Number B31949-10

4. Oracle Enterprise Manager Grid Control ReadMe for Linux x86-6410g Release 5 (10.2.0.5) April 2009

5. How to Enable Oracle VM Management Pack in EM Grid Control 10.2.0.5, Metalink Note #: 781879.1

6. Oracle VM: Converting from a Local to Shared OVS Repository, Metalinknote # 756968.1

7. How to Add Shared Repositories to Oracle VM Pools with Multiple Servers, Metalink Note # 869430.1

8. Implementing Oracle Grid: A successful Customer Case Study, Kai Yu, Dan Brint, IOUG Select Journal Volume 16, Number 2, Second Quarter 2009

9. Deploying Oracle VM Release 2.1 on Dell PowewrEdge servers and Dell/EMC storage Dell white paper

10. Dell Reference Configuration Deploying Oracle® Database on Dell™ EqualLogic™ PS5000XV iSCSI Storage A Dell Technical White Paper

11. Technical Best Practices for Virtualization & RAC – Oracle RAC SIG webseminar slides, Michael Timpanaro-Perota & Daniel Dibbets