ZERO DOWNTIME BI-DIRECTIONAL PHYSICAL TO VIRTUAL MIGRATION FOR ORACLE EBS R12 WITH RAC ON VBLOCK SYSTEMS

Transcription

1 Zero Downtime Bi-Directional Physical to Virtual Migration for Oracle EBS R12 with RAC on Vblock Systems Table of Contents ZERO DOWNTIME BI-DIRECTIONAL PHYSICAL TO VIRTUAL MIGRATION FOR ORACLE EBS R12 WITH RAC ON VBLOCK SYSTEMS Version 2.0 February

2 Copyright 2013 VCE Company, LLC. All Rights Reserved. VCE believes the information in this publication is accurate as of its publication date. The information is subject to change without notice. THE INFORMATION IN THIS PUBLICATION IS PROVIDED "AS IS." VCE MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WITH RESPECT TO THE INFORMATION IN THIS PUBLICATION, AND SPECIFICALLY DISCLAIMS IMPLIED WARRANTIES OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 2

3 Contents Introduction... 5 Solution overview... 5 Benefits of deployment on Vblock Systems... 5 About this paper... 6 Audience... 6 Feedback... 6 Technology overview... 7 Vblock Systems... 7 Vblock System Vblock System Oracle Database 11g Release 2 Enterprise Edition... 8 Oracle Real Application Clusters... 8 Oracle E-Business Suite Release Desktop tier... 9 Application tier... 9 Database tier Top-level directory structure EMC Unified Infrastructure Manager Architecture overview Validation environment Validation methodology Validation objectives Hardware components Software components Storage layout Migrating an Oracle RAC to a virtual environment (P2V) Prerequisites Overview of the steps Phase 1: Creating the physical Oracle RAC Step 1: Create the Oracle RAC Step 2: Provision the Oracle RAC Step 3: Activate the Oracle RAC Step 4: Create, provision, and activate the ESXi server Step 5: Add the ESXi server to vcenter Phase 2: Creating the virtual Oracle RAC Step 1: Create a virtual machine Step 2: Create a virtual machine template

4 Step 3: Allocate storage for the virtual node Step 4: Install Oracle Clusterware Step 5: Configure SSH for User Equivalence Step 6: Extend Oracle software to the new node Step 7: Add Oracle RAC instance on new node Step 8: Register the instance with the listener on the new node Step 9: Rebuild the context files on the database tier Step 10: Rebuild the context files on the application tier Step 11: Run Gather Schema Statistics Phase 3: Creating additional virtual nodes Phase 4: Removing the physical nodes from the cluster Step 1: Remove the instance and database software from the physical node Step 2: Remove Clusterware from the physical node Step 3: Delete the physical node Step 4: Perform post-removal tasks Step 5: Power down the server and disassociate the service profile Step 6: Deactivate and release the service blades Phase 5: Adding a Physical Node to the Oracle RAC Cluster (V2P) Step 1: Reactivate the Oracle RAC service Step 2: Add the physical Oracle RAC node Using VMware vmotion to reduce planned downtime Performing live migration Verifying the live migration is non-disruptive Scalability and performance considerations for Oracle EBS and RAC Conclusion Appendix A: Configuring SSH for User Equivalence

5 Introduction Deployment and maintenance of Oracle applications such as E-Business Suite (EBS) in a purely physical environment can be difficult. The multi-tier architecture of Oracle E-Business Suite makes it an ideal candidate for virtualization. With Vblock Systems, the deployment of Oracle EBS on a virtual platform can be accomplished securely and safely, without affecting production environments. Transitioning to a virtualized infrastructure can simplify Oracle EBS application management, and deliver superior levels of availability, performance, and scalability. Migration of physical environments can be performed with zero downtime by leveraging the virtualization technologies available in Vblock Systems and Oracle Real Application Cluster (RAC). A Vblock System with EMC Ionix Unified Infrastructure Manager (UIM) software can quickly provision virtual systems Oracle EBS and Real Application Cluster (RAC) environments. Running multiple Oracle EBS components on virtual machines on the same physical Vblock System provides consolidation benefits such as less hardware, data center space, and power consumption, while lowering total cost of ownership (TCO) and providing higher return on investment (ROI). Solution overview This paper presents a structured approach to migrating a physical Oracle RAC to a virtual Oracle RAC running Oracle EBS. This approach meets many of the challenges presented by virtualization of Oracle databases and applications. The following table describes how the solution addresses the main challenges to virtualizing Oracle EBS and similar applications. Challenge Customers want to use a Vblock System to run tier 1 applications such as Oracle EBS in a virtualized environment. However, they are concerned about Oracle s support policy requirement that reported issues be reproduced on a physical server. Customers want to combine the built-in virtualization mechanisms of Oracle EBS and Real Application Clusters (RAC) with VMware High Availability (HA) technology to guarantee very high uptime. Solution This solution demonstrates a non-disruptive method for migrating a physical Oracle database to VMware virtual machines, and then addresses performing this migration in reverse in order to meet Oracle support requirements. Oracle RAC 11g Release 2 (11g R2) is designed to be fault tolerant and to provide real-time HA with continuous database uptime. The use of VMware vmotion with VMware vsphere provides HA for Oracle EBS and RAC 11g R2 at both virtual and physical levels. Benefits of deployment on Vblock Systems With a Vblock System, customers can deploy all of their current applications in virtualized server environments with minimal or no modifications to operating systems, application versions, or other business software. Vblock Systems provide the ability to easily create snapshots and clones, application consistency on remote replication, and database refresh without sacrificing flexibility, openness, and optimization. 5

6 Deployment of Oracle EBS in the virtualized environment of a Vblock System provides the following key benefits: Decreased server sprawl and increased server utilization by running multiple Oracle EBS components in virtual machines consolidated onto fewer systems. Dynamic migration of Oracle instances on virtual machines to other systems to perform hardware maintenance or system changes without disruption to end users. Improved operational agility with both vertical and horizontal scaling to accommodate dynamic workloads. Provisioning of new pre-configured Oracle EBS environments in minutes using VMware vsphere templates. Automatic detection of failed physical servers running Oracle application instances in production, and automatic restart of failed Oracle application virtual machines with VMware High Availability (HA). About this paper This paper presents a structured approach to non-disruptive migration of a physical Oracle RAC database to a virtualized environment and addition of physical RAC nodes to the virtual cluster for support and problem resolution. This paper describes how to: Create a physical Oracle RAC and migrate it non-disruptively to a virtual environment on a Vblock System. Add a physical Oracle RAC node to a cluster to meet support requirements by Oracle to reproduce problems on a physical environment. Use VMware vmotion to perform live, non-disruptive migration of virtual machines to different hosts for planned maintenance. Audience Oracle database administrators, storage architects, VMware administrators, VCE customers, and individuals tasked with evaluating, acquiring, managing, operating, or deploying Oracle EBS in a virtualized data center environment will benefit from reading this paper. Feedback To suggest documentation changes and provide feedback on this paper, send to [email protected]. Include the title of this paper, the name of the topic to which your comment applies, and your feedback. 6

7 Technology overview This solution uses the following major hardware and software components and technologies: Vblock Systems Oracle Database 11g R2 Enterprise Edition Oracle RAC 11g R2 Oracle E-Business Suite Release 12 EMC UIM 2.1 Vblock Systems The Vblock System from VCE is the world's most advanced converged infrastructure one that optimizes infrastructure, lowers costs, secures the environment, simplifies management, speeds deployment, and promotes innovation. The Vblock System is designed as one architecture that spans the entire portfolio, includes best-in-class components, offers a single point of contact from initiation through support, and provides the industry's most robust range of configurations. Vblock System 720 The Vblock System 720 is an enterprise, service provider class mission-critical system in the Vblock System 700 family, for the most demanding IT environments supporting enterprise workloads and SLAs that run thousands of virtual machines and virtual desktops. It is architecturally designed to be modular, providing flexibility and choice of configurations based on demanding workloads. These workloads include business-critical enterprise resource planning (ERP), customer relationship management (CRM), and database, messaging, and collaboration services. The Vblock System 720 leverages the industry s best director-class fabric switch, the most advanced fabric based blade server, and the most trusted storage platform. The Vblock System 720 delivers greater configuration choices, 2X performance and scale from prior generations, flexible storage options, denser compute, five 9s of availability, and converged network and support for a new virtualization platform that accelerates time to service and reduces operations costs. Vblock System 320 The Vblock System 320 is an enterprise and service provider ready system in the Vblock System 300 family, designed to address a wide spectrum of virtual machines, users, and applications. It is ideally suited to achieve the scale required in both private and public cloud environments. The Vblock System 320 has been engineered for greater scalability and performance to support large enterprise deployments of mission-critical applications, cloud services, VDI, mixed workloads and application development and testing. The Vblock System 320 delivers greater configuration choices, 2X performance and scale from prior generations, flexible storage options, denser compute, five 9s of availability, and converged network and support for a new virtualization platform that accelerates time to service and reduces operations costs. Every Vblock System 320 is available with the marketleading EMC VNX storage arrays. For more information, go to 7

8 Oracle Database 11g Release 2 Enterprise Edition In Oracle Database 11g R2, Oracle Automatic Storage Management (ASM) and Oracle Clusterware have been integrated into a single set of binaries and named Oracle Grid Infrastructure. This now provides all cluster and storage services required to run an Oracle RAC database. Oracle Real Application Clusters Oracle RAC, with Oracle Database 11g Enterprise Edition, enables a single database to run across a cluster of servers, providing fault tolerance, performance, and scalability with no application changes necessary. In line with Oracle s support position for Oracle products running on VMware, the solution described in this paper was deployed using Oracle RAC Note: For Oracle's support policy on Oracle products running on VMware, refer to My Oracle Support Doc [ID ] in support.oracle.com. Oracle E-Business Suite Release 12 Oracle E-Business Suite architecture is a framework for multi-tiered distributed computing. In the Oracle E- Business Suite model, services are distributed among multiple levels or tiers. A service is a process or a group of processes that exercise some business logic and provide a particular functionality. A tier is a logical grouping of services that is not limited by physical nodes or machines. Each tier can consist of one or more nodes, and each node can accommodate more than one tier. For example, a single machine can contain database, application, and desktop tiers; in the same way, a database can reside on one of many application servers or on a separate machine by itself. 8

9 Figure 1. Oracle E-Business Suite tiers Desktop tier The desktop tier is normally the client Web browser. The user interface for the desktop tier is provided through HTML for self-service applications and a Java applet for forms. The desktop client is installed on demand and then stored locally for future use. The forms client applet is packaged as JAR files and mainly represents the presentation layer of Oracle forms. The JAR files are also downloaded on first use. The forms client must run within a Java Virtual Machine (JVM) and is supplied by Oracle JInitiator. Application tier The application tier hosts one or more servers that process the business logic. It communicates between the desktop tier and database. The application tier, also commonly known as the middle tier, includes the following major components: Web Server, Forms Server, Concurrent Processing Server, Business Intelligence System, Reports Server, Admin Server, and Discover Server. These components usually run as services on the application tier and may run on one or more nodes. For more details about the components, refer to Oracle Applications Concepts [B ]. 9

10 Database tier The database tier contains the RDBMS Oracle home, along with the Applications database, which stores all the data maintained by Oracle Applications. It also contains Oracle Applications processing code stored inside the Applications database to optimize performance. The database does not directly communicate with desktop clients; instead, it works with application tier services that mediate the communication between the desktop and database tier. Top-level directory structure An Oracle EBS Release 12 system uses components from many Oracle products. These product files are stored in a number of top-level directories on the database and application servers (Figure 2). These top-level directories are: The db/apps_st/data (DATA_TOP) directory is located on the database node machine and contains database data files for Oracle Applications. The db/tech_st/ directory is located on the database node machine and contains Oracle 11g database software. The apps/apps_st/appl (APPL_TOP) directory is located on the application node machine, and contains Oracle Applications product directories such as General Ledger (GL), and Purchasing (PO). The apps/apps_st/comn (COMMON_TOP) directory contains common directories and files such as log files and Java libraries shared across different products. The apps/tech_st/ directory is the top-level technology stack directory for Oracle Developer 10g (Forms and Reports). The apps/tech_st/ directory is the top-level technology stack directory for the components of Oracle Application Server The most significant components used in Oracle Applications R12 are Oracle HTTP Server (Apache) and Oracle Components for Java (OC4J), which runs most of the code written in Java. 10

11 Figure 2. Oracle top-level directory structure EMC Unified Infrastructure Manager 2.1 EMC Ionix UIM provides simplified management for Vblock Systems, including provisioning, configuration, change, and compliance management. This solution uses UIM to simplify the tasks required to provision a Vblock System for an Oracle RAC implementation. UIM provides the functionality to package portions of the compute, storage, and network resources of a Vblock System. Once in a service, the resources can be reserved, deployed, allocated, and managed as a single entity through UIM. 11

12 Architecture overview VCE solutions are designed to reflect and validate real-world deployments. The solution in this paper describes a live, non-disruptive migration of the two-node physical Oracle RAC 11g R2 database underlying Oracle EBS to a virtualized four-node Oracle RAC 11g R2 database. Figure 3 shows the high-level architecture of this solution. Figure 3. High-level solution architecture Figure 4 shows the logical configuration of the components used to implement the solution. 12

13 Figure 4. Vblock System architecture Validation environment The validated solution was built on an Oracle EBS application configured as follows: Application tier: virtualized 2-node application server, FC SAN connected (or NAS NFS over IP) Database tier: physical 2-node Oracle RAC database, FC SAN connected The Oracle RAC nodes communicated with each other through a dedicated 1-Gb private network VLAN, which also synchronized cache across the various database instances. Two 4-Gb Fibre Channel (FC) switches provided FC SAN connectivity. 13

14 Validation methodology Validation of the solution was conducted in several phases, as shown in Figure 5. Figure 5. Solution validation phases The validation phases consisted of: Physical to virtual (P2V) Phase 1 Create a single-instance Oracle database on a physical machine. Phase 2 Convert the Oracle single-instance database to an Oracle RAC cluster. Add a second physical node to the cluster. Phase 3 Add two virtual machines to the cluster. Phase 4 Add two additional virtual machines to the cluster. Drop the physical nodes from the cluster (V2P). Virtual to physical (V2P) Phase 5 Add two physical machines back into the cluster. Validation objectives The purpose of this validation was to: Provide customers with a non-disruptive method to migrate their Oracle RAC databases from their current physical environment to a virtualized environment. Provide customers with a non-disruptive method to migrate their virtualized (on VMware) Oracle RAC database environment to a physical environment if Oracle support mandates it. Demonstrate how customers can reduce planned downtime of Oracle EBS applications using VMware vmotion to move virtual machines from one physical server to another non-disruptively. 14

15 Hardware components A virtual Oracle RAC can be deployed on a Vblock System 320, Vblock System 720, or any Vblock System that provides SAN connectivity. The following table details the Vblock System 700 hardware components used for the solution. Component Quantity Configuration Cisco UCS 1 12 x CPU cores, 192 GB memory Storage 1 EMC storage 2 x 6120 Fabric Interconnects 4 x Cisco B250-M2 blades (database tier) Network 2 Cisco MDS 9222i Switch 2 x B200-M1 or higher performance blades (application tier) Software components The following table details the software used for the solution. Component Quantity Configuration Oracle E-Business Suite 1 Release Enterprise Linux (EL) VMware vsphere Oracle RAC 1 Version EMC UIM Storage layout Raw device mapping (RDM) allows a special file in a VMFS volume to act as a proxy for a raw device. The mapping file contains metadata used to manage and redirect disk accesses to the physical device. It provides some of the advantages of a virtual disk in the VMFS file system, while keeping some advantages of direct access to physical device characteristics. VMware recommends the use of RDM with virtual machine clusters that need to access the same raw LUN for failover scenarios. The setup is similar to a virtual machine cluster that accesses the same virtual disk file, but an RDM file replaces the virtual disk file. The VMFS must be configured in shared access mode, to allow more than one virtual machine to open the mapping file simultaneously. Figure 6 shows raw device mappings for the Oracle database. Figure 7 shows the layout of Oracle database storage mapped to the virtualization layer. 15

16 Figure 6. Oracle database storage layout 16

17 Figure 7. Mapping Oracle database storage to virtual layer 17

18 Migrating an Oracle RAC to a virtual environment (P2V) Vblock Systems allow the live migration of virtual machines from one physical server to another using VMware vmotion technology. An administrator can take a virtual machine offline for maintenance or upgrading without subjecting users to downtime. One of the most significant advantages of live migration is that it facilitates proactive maintenance. If a failure is suspected, the potential problem can be resolved before disruption of service occurs. Live migration can also be used for workload balancing. The following procedures describe how to create a two-node physical Oracle RAC, migrate the physical Oracle RAC to a virtual environment, and then release the physical Oracle RAC infrastructure resources for other uses. Prerequisites EMC UIM is used to help simplify the process of creating the Oracle RAC. Before you begin, make sure that UIM: Is installed according to the instructions in the EMC Ionix Unified Infrastructure Manager Version 2.1 Installation Guide. Is configured with the correct VLANs and Storage Groups according to the instructions in the EMC Ionix Unified Infrastructure Manager Version 2.1 Administration and User Guide. Has a service offering defined for an Oracle service. Vblock System resources are allocated for services through the service offerings. Refer to the EMC Ionix Unified Infrastructure Manager Version 2.1 Administration and User Guide for instructions to create service offerings. Overview of the steps Create, provision, and activate the physical Oracle RAC Create, provision, and activate an ESXi server Migrate the physical Oracle RAC to a virtual Oracle RAC Remove the physical nodes from the cluster Deactivate and release the service blades 18

19 Phase 1: Creating the physical Oracle RAC This procedure creates, provisions, and activates an Oracle RAC service. Created services are moved to the Service Manager and are put into a planned state. Services in the planned state can be customized and edited within the boundaries defined by the service offering. Once planning is complete, the resources of the service can be provisioned and activated on a Vblock System. Step 1: Create the Oracle RAC 1. From the Administration, Service Catalog view, select a Service Offering (in this example, OracleRAC). 2. Click Create Service. 3. Enter the Name and Description of the service. When naming the service, ensure that the service name: a. Is between 2 and 32 characters. b. Does not contain spaces. c. Contains only alphanumeric or the following special characters: decimal point (.), dash (-), colon (:), underscore (_). 4. Select the specific Vblock System on which the service will be deployed, and click OK. 5. From the Administration, Service Manager view, select the service to edit (in this example, MyOracleRACService). 6. On the General tab, click Edit. 7. In the Edit General dialog box, select Do not install OS. Note: UIM does not support automatic installation of Red Hat Linux, so it will be installed manually in a later procedure. 19

20 8. On the Servers tab, click Add or Edit. 9. In the Edit Server dialog box: a. Specify ora-node1 as the first host, and select Gold. Click Save. b. Specify ora-node2 as the second host, and select Gold. Click Save. Note: UIM. Gold is the pool of blades defined as appropriate for this service offering during the setup phase of 10. Leave the Storage layout with the default settings, which were defined in the Service Offering according to Oracle RAC best practices. 11. On the Network tab, click Add or Edit. 12. Define the networking requirements (public network, heartbeat, and Oracle intercommunications) to be bound to the blades. Note: The network profile is used to set up the connectivity that will be used between the servers of the service and the external networks after the service is activated. 13. Click Save to save the network profile. 20

21 Step 2: Provision the Oracle RAC Provisioning allocates and reserves the resources, and configures the necessary hardware. Once allocated, the resources are unavailable to other services. For example, the necessary storage is allocated from the storage pools, the UCS service profiles are created on the UCS, and the blades are reserved. If the option to install an operating system is selected, the operating system is installed at this time. To provision the Oracle RAC service: 1. From the Administration, Service Manager view, select the service to provision. 2. Click Provision. 3. Follow the progress of the provisioning on the Details, Service History view. 21

22 4. If provisioning is successful, activate the service. If not, troubleshoot the issue. Refer to EMC Ionix Unified Infrastructure Manager Version 2.1 Administration and User Guide for troubleshooting information. Step 3: Activate the Oracle RAC Provisioning allocates and reserves the necessary components for the service, as well as installs the operating system on the blades, if applicable. Activating the service turns on the system. The UCS service profiles are booted on the equipment, which includes activating the network paths and fabric paths. Note: The operating system will be installed manually and started in a later procedure. To activate the Oracle RAC service: 1. From the Administration, Service Manager view, select the service to activate. 2. Click Activate. MyOracleRACService has now been provisioned and activated on ora-node1 and ora-node2. Step 4: Create, provision, and activate the ESXi server The ESXi server provides the virtualization capabilities that aggregate and present the host hardware to virtual machines as a normalized set of resources. Use UIM to provision an ESXi server to instantiate the physical infrastructure for the virtual Oracle RAC nodes. 1. From the Service Catalog, select the ESXi server service offering (in the example, vsphereinfrastructure). 2. Click Create Service. 3. Optionally, go to the Service Manager tab to customize the default settings of the service offering. a. Select the service to customize from the list of services. b. Click Edit. c. Make the necessary changes to the Server, Network, and Storage profiles. 4. Go to the Service Manager tab to provision and activate the service. 22

23 5. After activating the service, establish connectivity between the ESXi servers and the networks selected for service operations. Note: Make sure you connect the blades with the appropriate networks for public network, heartbeat, and Oracle intercommunications. Step 5: Add the ESXi server to vcenter After activating the ESXi server service, add it to VMware vcenter using the Connect Host wizard, which prompts for a host name, user ID, and password. Adding the ESXi server to vcenter enables administrators to perform management tasks on virtual machines that reside on the ESXi server. Note: Refer to the VMware vsphere Datacenter Administration Guide for detailed instructions on adding a host to vcenter. 23

24 Phase 2: Creating the virtual Oracle RAC Now that you have created the physical Oracle RAC and provisioned an ESXi server, create the virtual Oracle RAC. Step 1: Create a virtual machine Create a single virtual machine to use as a database node, and install the operating system on it. This virtual machine will be used to create a template from which to clone other virtual machines. 1. Use VMware vsphere to create a new virtual machine (oel5u4-rac1) with the settings shown in the following screen. 2. After creating the virtual machine, install the Enterprise Linux (EL) operating system on it. 24

25 Step 2: Create a virtual machine template For rapid deployment of new virtual machines into the cluster, create a virtual machine template. A template is a master copy of a virtual machine that you can use to create and provision other virtual machines. In VMware vsphere, use the Clone Virtual Machine to Template wizard as shown in the following screen. The template in this document was configured with the requirements and pre-requisites detailed in the following table. 25

26 Description 26

27 CPU Memory 4 vcpus 20 GB Operating system Enterprise Linux 5.4 Kernel OS users (users created and passwords set) OS groups Software pre-installed RPM packages installed (as Oracle prerequisites) System Configuration (as Oracle prerequisites) el5 Username: grid UserID:1100 Username: oracle UserID:1101 Group: oinstall GroupID:500 Group: asmadmin GroupID:1100 Group: dba GroupID:400 Group: asmdba GroupID:1200 Group: asmoper GroupID:1201 Oracle ASMLIB support library oracleasm el el5.x86_64.rpm oracleasmlib el5.x86_64.rpm oracleasm-support el5.x86_64.rpm See the relevant Oracle installation guide: Oracle Real Application Clusters Installation Guide 11g Release 2 (11.2) for Linux Oracle Grid Infrastructure Installation Guide 11g Release 2 (11.2) Step 3: Allocate storage for the virtual node 27

28 Allocate storage for the virtual node using RDM, which allows the migration of virtual machines with VMware vmotion. The mapping file acts as a proxy to allow migration of the virtual machine using the same mechanism that exists for virtual disk files. Select physical compatibility mode. Physical mode for a raw device mapping specifies minimal SCSI virtualization of the mapped device, allowing the greatest flexibility for SAN management software. Physical mode also allows virtual to physical clustering for cost-effective high availability. 1. Use the Hardware tab on the Virtual Machine Properties screen to add RDMs for the virtual node (oel5u4-rac1). 2. Repeat the procedure until all of the LUNs are added to the virtual machine. Step 4: Install Oracle Clusterware Oracle RAC enables you to create a cluster of Oracle databases so that they operate as a single entity. Oracle RAC uses Oracle Clusterware to create a cluster. Install the Oracle Grid Infrastructure 11g R2 on the virtual machine. Use the instructions in Oracle Grid Infrastructure Installation Guide 11g Release 2 for Linux. 28

29 Step 5: Configure SSH for User Equivalence Before adding the new virtual node to Oracle RAC, set up Secure Shell (SSH) for User Equivalence on the virtual node for the grid and oracle users. Refer to Appendix A: Command Examples for an example of how to set up SSH for user equivalence. Step 6: Extend Oracle software to the new node This procedure describes how to add the virtual node to the cluster. Note: For additional information, refer to Adding and Deleting Oracle RAC Nodes for Oracle E-Business Suite Release 12 [ID ] or Oracle Clusterware Administration and Deployment Guide 11g Release 2 (11.2). 1. Before adding the node to the cluster, run the Cluster Verification Utility (CVU) to validate that the new virtual node meets all Oracle prerequisites. Execute the following command from the primary physical node (oel5u4-node1) as the grid user: [root@oel5u4-node1 /]# su grid [grid@oel5u4-node1 ~]$ cluvfy stage -pre nodeadd -n oel5u4-rac1 2. After successful validation, add the new virtual node (oel5u4-rac1) to the cluster. The following example shows the standard Oracle-supplied script run as the grid user: [grid@oel5u4-node1 ~]$ cd $Oracle_HOME/oui/bin [grid@oel5u4-node1 bin]$./addnode.sh "CLUSTER_NEW_NODES={oel5u4rac1}" "CLUSTER_NEW_PRIVATE_NODE_NAMES={oel5u4-rac1-priv}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={oel5u4-rac1-vip} 3. Run orainstroot.sh and root.sh on the new node (oel5u4-rac1). [root@oel5u4-rac1 ~]# /u01/app/orainventory/orainstroot.sh [root@oel5u4-rac1 ~]# /u01/app/11.2.0/grid/root.sh 4. Verify the node has been added successfully. Execute the following command as a grid user from the primary node (oel5u4-node1): [grid@oel5u4-node1 admin]$ cluvfy stage -post nodeadd -n oel5u4-rac1 5. Copy the updated Oracle_HOME from the primary node in the cluster (oel5u4-node1) to the new node. [root@oel5u4-node1 ~]# su - oracle [oracle@oel5u4-node1 ~]$ cd $Oracle_HOME/oui/bin 6. Execute the following to add the new node: a. Run the addnode.sh script on the primary node (oel5u4-node1). b. Run root.sh and rootcrs.pl on the virtual node (oel5u4-rac1). 29

30 bin]$./addnode.sh "CLUSTER_NEW_NODES={oel5u4-rac1}" ~]# /u01/app/oracle/product/11.2.0/dbhome_1/root.sh ~]# /u01/app/11.2.0/grid/crs/install/rootcrs.pl 30

31 Step 7: Add Oracle RAC instance on new node After creating a virtual node and adding it to the physical Oracle RAC, use the Database Configuration Assistant (DBCA) to add a new instance to the new node. Note: DBCA uses the listener named LISTENER. You can run DBCA on any existing Oracle RAC node, but the listener must be enabled and running on that node. 1. Enable the listener on the physical node (oel5u4-node1). [grid@oel5u4-node1 ~]$ srvctl enable listener -l listener -n oel5u4-node1 2. Register the instance (VIS1) with the listener on the physical node (oel5u4-node1). Static registration: [grid@oel5u4-node1 ~]$ vi /u01/app/11.2.0/grid/network/admin/listener.ora Add followings SID_LIST_LISTENER= (sid_list= sid_desc= (GLOBAL_DBNAME=VIS1) (Oracle_HOME=/u01/app/oracle/product/11.2.0/dbhome_1) (SID_NAME=VIS1) ) ) 3. Start the listener on the physical node (oel5u4-node1). grid@oel5u4-node1 ~]$ srvctl start listener -l listener -n oel5u4-node1 4. Verify the listener is running. [grid@oel5u4-node1 ~]$ lsnrctl status listener 5. Launch DBCA to add an instance (VIS3) to the virtual node. a. Select Oracle Real Application Clusters (RAC) database. Click Next. b. Select Instance Management. Click Next. c. Select Add an Instance. Click Next. d. Click Next to accept the default instance name (VIS3) or change it. 31

32 e. Check the summary window. Note: For additional information, refer to Oracle Real Application Clusters Administration and Deployment Guide 11g Release 2 (11.2). Step 8: Register the instance with the listener on the new node 1. Remove the listener entry for the physical node (oel5u4-node1). [grid@oel5u4-node1 ~]$ vi /u01/app/11.2.0/grid/network/admin/listener.ora Delete the followings: SID_LIST_LISTENER= (sid_list= (sid_desc= (GLOBAL_DBNAME=VIS1) (Oracle_HOME=/u01/app/oracle/product/11.2.0/dbhome_1) (SID_NAME=VIS1) ) ) 2. Stop and disable the listener on the physical node (oel5u4-node1). [grid@oel5u4-node1 ~]$ srvctl stop listener -l listener -n oel5u4-node1 [grid@oel5u4-node1 ~]$ srvctl disable listener -l listener -n oel5u4-node1 3. Modify the local_listener parameter on the new virtual node (oel5u4-rac1). [oracle@oel5u4-rac1 ~]$ sqlplus / as sysdba SQL> alter system set local_listener='(description=(address_list=(address=(protocol=tcp)(host= )(port=1521))))'; 4. Register the instance with the listener on the new virtual node. SQL> alter system register; System altered. 32

33 Step 9: Rebuild the context files on the database tier The context file stores all the configuration details of your Oracle Applications system. After you modify this file, run adconfig.pl to make the configuration changes. 1. Generate a new context file (VIS3_oel5u4-rac1.xml) on the new node. [oracle@oel5u4-rac1 bin]$./adbldxml.pl appsuser=apps appspasswd=apps /u01/app/oracle/product/11.2.0/dbhome_1/appsutil/vis3_oel5u4-rac1.xml [oracle@oel5u4-rac1 bin]$ 2. In the new context file, set the value of s_virtual_hostname to point to the hostname for the new virtual database node. vi /u01/app/oracle/product/11.2.0/dbhome_1/appsutil/vis3_oel5u4-rac1.xml Changed to : <host oa_var="s_virtual_hostname">oel5u4-rac1-vip</host> 3. Run adconf.pl to apply the changes to the new virtual database node. [oracle@oel5u4-rac1 ~]$ cd $Oracle_HOME/appsutil/bin [oracle@oel5u4-rac1 bin]$ perl adconfig.pl Enter the full file path to the Context file: /u01/app/oracle/product/11.2.0/dbhome_1/appsutil/vis3_oel5u4-rac1.xml 4. Edit the context file on each physical node in the cluster with the following change to the DB_LISTENER. [oracle@oel5u4-node1 ~]$ vi $Oracle_HOME/appsutil/VIS1_oel5u4-node1.xml <DB_LISTENER oa_var="s_db_listener">vis</db_listener> Changed to: <DB_LISTENER oa_var="s_db_listener">listener_ebs</db_listener> 5. Run adautocfg.sh to update the change on these nodes. The example below is for oel5u4- node1. [oracle@oel5u4-node1 ~]$ $Oracle_HOME/appsutil/scripts/VIS1_oel5u4- node1/adautocfg.sh 33

34 Step 10: Rebuild the context files on the application tier 1. Modify the context file on both application nodes (oel5u4-app1 and oel5u4-app2) to include the VIP connection for the new virtual node. <jdbc_url _LIST=(LOAD_BALANCE=YES)(FAILOVER=YES)(ADDRESS=(PROTOCOL=tcp)(HOST=oel5u4- node1-vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-node2- vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-rac1- vip.mordor.vce)(port=1521)))(connect_data=(service_name=vis)))</jdbc_url> 2. Run adconfig.sh on each application node to update it with the connection information for the new virtual node. ~]$ $AD_TOP/bin/adconfig.sh contextfile=/u01/local/oracle/vis/inst/apps/vis_oel5u4- app1/appl/admin/vis_oel5u4-app1.xml Note: The following optional step is to make sure that you can connect to either of the application nodes using a Web browser in future. 3. Run adconfig.sh on oel5u4-app1 again. Step 11: Run Gather Schema Statistics Run a standard application concurrent request, Gather Schema Statistics, to ensure the Oracle EBS environment is functioning with no connectivity issues between the application and database tiers. For more information on how to run the concurrent request, refer to the Oracle Applications System Administrator User Guide. 1. Restart the application tier. 2. Run Gather Schema Statistics. 34

35 Phase 3: Creating additional virtual nodes Use the Deploy Template option in VMware vsphere and the template created earlier (oel5u4-rac1) to create additional virtual database nodes. In the deployment described in this paper, four virtual database nodes were created (oel5u4-rac1, oel5u4-rac2, oel5u4-rac3, and oel5u4-rac4). Phase 4: Removing the physical nodes from the cluster After the Oracle RAC has been migrated to virtual nodes, you can remove the corresponding physical nodes. After removing the instance and the database software, deactivate the physical Oracle RAC database service. Note: The commands in the following procedures relate to physical node oel5u4-node2. Repeat the procedures for the other physical node: oel5u4-node1. Step 1: Remove the instance and database software from the physical node 1. Shut down the application tier. scripts]$./adstpall.sh apps/apps 2. On any virtual node (for example, oel5u4-rac1), make sure the listener is running on that node. 3. As oracle user, use the Database Configuration Assistant (DBCA) to remove the Oracle RAC instance from the physical node you want to remove (oel5u4-node2). 35

36 4. Stop and disable the listener on the virtual node (oel5u4-rac1). 5. Stop and disable the listener on the physical node (oel5u4-node2). 6. Update the inventory on the physical node by running the following commands as oracle user. bin]$./runinstaller -updatenodelist Oracle_HOME=/u01/app/oracle/product/11.2.0/dbhome_1 CLUSTER_NODES={oel5u4- node2} -local 7. Remove Oracle_HOME from the physical node. deinstall]$./deinstall -local 8. Update the Oracle RAC inventory. bin]$./runinstaller - updatenodelistoracle_home=/u01/app/oracle/product/11.2.0/dbhome_1 "CLUSTER_NODES={oel5u4-rac1,oel5u4-rac2,oel5u4-rac3,oel5u4-rac4}" 9. Verify the node has been removed from inventory.xml. [oracle@oel5u4-rac4 ~]$ vi /u01/app/orainventory/contentsxml/inventory.xml Step 2: Remove Clusterware from the physical node Execute the following to remove the Oracle Clusterware, [root@oel5u4-node2 ~]# cd /u01/app/11.2.0/grid/crs/install [root@oel5u4-node2 install]#./rootcrs.pl -deconfig -force Step 3: Delete the physical node From one of the virtual nodes (for example, oel5u4-rac1), remove the physical node from the cluster. 1. As root user, remove the physical node (oel5u4-node2) from the cluster. [root@oel5u4-rac1 ~]# cd /u01/app/11.2.0/grid/bin [root@oel5u4-rac1 bin]#./crsctl delete node -n oel5u4-node2 2. On the physical node you are removing, run the following to update the inventory. [grid@oel5u4-node2 bin]$./runinstaller -updatenodelist Oracle_HOME=/u01/app/11.2.0/grid "CLUSTER_NODES={oel5u4-node2}" CRS=TRUE - silent -local 3. As grid user, de-install the Oracle Clusterware on the physical node you are deleting. [grid@oel5u4-node2 ~]$ /u01/app/11.2.0/grid/deinstall/deinstall local 36

37 4. Run the following commands as the root user or the administrator on the physical node (oel5u4- node2). Press Enter after you finish running the commands. Note: The deconfig commands can be executed in parallel on all remote nodes. Execute the command on the local node after execution completes on all of the remote nodes. /tmp/deinstall _ pm/perl/bin/perl -I/tmp/deinstall _ PM/perl/lib -I/tmp/deinstall _ PM/crs/install /tmp/deinstall _ pm/crs/install/rootcrs.pl -force -deconfig paramfile "/tmp/deinstall _ pm/response deinstall_ora11g_gridinfrahome1.rsp" 5. Run the following to update the inventory. bin]$./runinstaller -updatenodelist Oracle_HOME=/u01/app/11.2.0/grid "CLUSTER_NODES={oel5u4-rac1,oel5u4- rac2,oel5u4-rac3,oel5u4-rac4}" CRS=TRUE silent 6. Verify the physical node was deleted. bin]$ cluvfy stage -post nodedel -n oel5u4-node Step 4: Perform post-removal tasks 1. Update the application tier and database tier. ~]$ sqlplus apps/apps SQL> exec fnd_conc_clone.setup_clean; 2. Reconfigure the context on every existing database node. For example: ~]$ $Oracle_HOME/appsutil/scripts/VIS1_oel5u4- node1/adautocfg.sh 3. Edit the context file on the two application nodes to remove the deleted physical node. 4. Run adconfig.sh on both application nodes. ~]$ $AD_TOP/bin/adconfig.sh contextfile=/u01/local/oracle/vis/inst/apps/vis_oel5u4- app1/appl/admin/vis_oel5u4-app1.xml ~]$ $AD_TOP/bin/adconfig.sh contextfile=/u01/local/oracle/vis/inst/apps/vis_oel5u4- app2/appl/admin/vis_oel5u4-app2.xml 37

38 5. Run autoconfig.sh on oel5u4-app1 again. ~]$ $AD_TOP/bin/adconfig.sh contextfile=/u01/local/oracle/vis/inst/apps/vis_oel5u4- app1/appl/admin/vis_oel5u4-app1.xml 6. Restart the application tier. admin]$ cd $ADMIN_SCRIPTS_HOME scripts]$./adstrtal.sh apps/apps 7. Run a standard application concurrent request, Gather Schema Statistics, to ensure the Oracle EBS environment is functioning with no connectivity issues between the application and database tiers. For more information on how to run the concurrent request, refer to the Oracle Applications System Administrator User Guide. Step 5: Power down the server and disassociate the service profile 1. Log in to UCS Manager. 2. In the navigation pane, click the Servers tab. 3. Select the service profile for the blade. 4. Select KVM Console from the right-click menu. 5. In the console, click Shutdown Server. 6. Click OK. 7. Click OK again to shut down the server. The server begins shutting down. 38

39 8. On the FSM tab, monitor status of blade shutdown to make sure it finishes. Step 6: Deactivate and release the service blades Deactivating a service shuts down the UCS service profiles while preserving the service configuration and resources. Once a service is inactive, the blades can be released for use in another service or for an application outside of UIM. During deactivation, the service profiles are booted down. All of the configuration and resources are preserved, identities such as MAC addresses and World Wide Port Names (WWPNs) are kept intact, and the storage is preserved on the storage array. Optionally, the blades can be released after the service is deactivated. The storage, however, must stay reserved to ensure the data is preserved for reactivation. 1. From the Administration, Service Manager view, select the active service to deactivate (in the example, MyOracleRACService). 2. Click Deactivate. 3. Wait for deactivation to complete, which is indicated by an Inactive status. 4. Click Release Blades. 39

40 Phase 5: Adding a Physical Node to the Oracle RAC Cluster (V2P) The following sections describe how to add a physical node (oel5u4-node2) to the virtualized Oracle RAC. This operation enables you to meet any support requirement by Oracle to reproduce problems in a physical environment. To add a physical server to the cluster, use UIM to reactivate the physical Oracle RAC service, and then add a physical node to the Oracle RAC. Reactivate the service to turn the system on. The UCS service profiles are booted on the equipment, which reactivates the network paths and fabric paths. Step 1: Reactivate the Oracle RAC service 1. Confirm that the Vblock System setup will still support the service. a. Go to the Administration, Vblock Systems tab. b. Locate the Vblock System on which you are reactivating the service. c. Check the alert and status messages in the first column of the row and respond as indicated in the UIM online help. 2. Validate that the service is still in compliance. a. From the Administration, Service Manager view, select the inactive service to activate. b. Click Verify Compliance. c. Once the test is finished, check the Alert column and respond as indicated in the UIM online help. 3. From the Administration, Service Manager view, select the service to activate (in the example, MyOracleRACService). 4. Click Activate. 40

41 Step 2: Add the physical Oracle RAC node 1. Configure SSH for User Equivalence for the node you are adding. Refer to Appendix A: Command Examples for an example of configuring SSH for User Equivalence. 2. Execute the following to verify the node does not already exist. ~]$ cluvfy stage -pre nodeadd -n oel5u4-node2 3. Extend Oracle Clusterware to the new node. Note: Refer to the checks and steps in Oracle Clusterware Administration and Deployment Guide 11g Release 2 (11.2). [grid@oel5u4-node1 bin]$./addnode.sh "CLUSTER_NEW_NODES={oel5u4rac1}" "CLUSTER_NEW_PRIVATE_NODE_NAMES={oel5u4-rac1-priv}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={oel5u4-rac1-vip} 4. When the script has completed successfully and script output has been validated, run root.sh on the new node as root user. [root@oel5u4-node2 ~]# /u01/app/11.2.0/grid/root.sh 5. Extend the Oracle software to the new node. Execute the following from $Oracle_HOME/oui/bin on an existing node in the cluster: [root@oel5u4-rac1 ~]# su oracle [oracle@oel5u4-rac1 ~]$ cd $Oracle_HOME/oui/bin [oracle@oel5u4-rac1 bin]$./addnode.sh "CLUSTER_NEW_NODES={oel5u4-node2}" 41

42 6. Run root.sh on the new node: ~]# /u01/app/oracle/product/11.2.0/dbhome_1/root.sh 7. Optionally, execute rootcrs.pl to check the Cluster Ready Services (CRS) resource for errors. ~]# /u01/app/11.2.0/grid/crs/install/rootcrs.pl 8. Add an Oracle RAC database instance to the new node. Note: Refer to Oracle Real Application Clusters Administration and Deployment Guide 11g Release 2 (11.2) for detailed instructions. a. Make sure the listener is running on any existing database node (for example, oel5u4-rac1). b. As oracle user on any existing database node, run the Database Configuration Assistant (DBCA) to add an Oracle RAC database instance (VIS7). 9. Rebuild the context on the database tier. a. Generate a context file on the new physical node (oel5u4-node2). [[email protected]]$ cd $Oracle_HOME/appsutil/bin b. Edit the context file to the following to change the hostname of the new node to its VIP hostname. <jdbc_url oa_var="s_apps_jdbc_connect_descriptor">jdbc:oracle:thin:@(description=(address _LIST=(LOAD_BALANCE=YES)(FAILOVER=YES)(ADDRESS=(PROTOCOL=tcp)(HOST=oel5u4-rac4- vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-rac1- vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-rac2- vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-rac3- vip.mordor.vce)(port=1521))(address=(protocol=tcp)(host=oel5u4-node2- vip.mordor.vce)(port=1521)))(connect_data=(service_name=vis)))</jdbc_url c. On the newly added physical node, alter the local_listener parameter to make it aware of the new database instance (VIS7). [oracle@oel5u4-rac1 ~]$ sqlplus / as sysdba SQL> alter system set local_listener='(description=(address_list=(address=(protocol=tcp)(host= )(port=1521))))'; d. Run adconfig.sh on all physical database nodes. For example: [oracle@oel5u4-node2 bin]$ cd $Oracle_HOME/appsutil/bin [oracle@oel5u4-node2 bin]$ perl adconfig.pl Enter the full file path to the Context file: /u01/app/oracle/product/11.2.0/dbhome_1/appsutil/vis7_oel5u4-node2.xml 10. Run autoconfig.sh on each application nodes (oel5u4-app1 and oel5u4-app2). 42

43 11. Run autoconfig.sh on oel5u4-app1 again. 12. Start the application tier. 13. Run a standard application concurrent request, Gather Schema Statistics, to ensure the Oracle EBS environment is functioning with no connectivity issues between the application and database tiers. For more information on how to run the concurrent request, refer to the Oracle Applications System Administrator User Guide. 43

44 Using VMware vmotion to reduce planned downtime VMware vmotion allows users to perform the live migration of virtual machines from one physical server to another with zero downtime, continuous availability, and complete transaction integrity. Live migration of virtual machines allows hardware maintenance to be performed without scheduling downtime and disrupting business operations. VMware vmotion is a key technology for creating a dynamic, automated, and self-optimizing data center. This application makes it possible to service hardware and software with no disruption so that you can manage your Oracle EBS applications without the risk of the application going offline. For maintaining high availability, vmotion enables you to: Perform hardware maintenance without scheduled downtime. Proactively migrate virtual machines away from failing or underperforming servers. Keep your resources optimized to align with business priorities. The migration of a virtual machine with vmotion preserves the precise execution state, the network identity, and the active network connections. As a result, there is zero downtime and no disruption to the user. This ensures that your Oracle EBS applications remain online, even under conditions in which a non-virtualized instance of the application becomes unavailable. Performing live migration In this example, the virtual machine (oel5u4-app1) is an Oracle EBS application node, and the virtual machine is migrated to a different physical host: 1. Login to the VMware vsphere Client. 2. In the navigation pane, right-click the virtual machine (oel5u4-app1), and then select Migrate from the menu. 44

45 3. Select Change Host. Click Next. 45

46 4. Select the destination host or cluster ( ). Click Next. 46

47 5. For better performance, select High Priority for vmotion Priority. Click Next. 47

48 6. Click Finish to start the migration. 48

49 Verifying the live migration is non-disruptive Verify that the live migration is non-disruptive: 1. Log in to Oracle EBS. 2. Run the Concurrent program, Gather Schema Statistics. 3. In vsphere Client, migrate the virtual machine (oel5u4-app1) back to the original host ( ) while Gather Schema Statistics is running. a. In the navigation pane, right-click the virtual machine (oel5u4-app1), and then select Migrate from the menu. b. Select Change Host. Click Next. c. Select the destination host or cluster ( ). Click Next. d. Select High Priority. Click Next. e. Click Finish to start the migration. 49

50 Scalability and performance considerations for Oracle EBS and RAC There are several factors to consider when sizing Oracle E-Business Suite systems for RAC environments on a Vblock System. These include: Virtual machine configuration (vcpus, memory, network configuration) Network configuration with Cisco switches Storage performance and sizing for the EMC VMAX Oracle Release12 EBS configuration Virtual machine configuration takes advantage of the VMware Distributed Resource Scheduler (DRS) load distribution technology to balance the workload of each virtual machine in the Vblock System used to host the Oracle EBS application. VMware DRS continuously monitors utilization across a resource pool and allocates available resources among virtual machines according to need. When a virtual machine experiences increased load, VMware DRS first evaluates its priority against established resource allocation rules and policies, and allocates additional resources if necessary. Resources are allocated to the virtual machine by either migrating it to another server with more available resources or by allocating more resources on the same server by migrating other virtual machines to different servers. The live migration of virtual machines to different physical servers is completely transparent to end users. Network performance is an important consideration when sizing the performance of Oracle EBS applications. By tuning the Cisco Nexus switches deployed within a Vblock System, you can optimize the available network traffic sent between all of the nodes within the application, concurrent managers, and database tiers for Oracle EBS. In addition, to enhance performance and to scale out, either software-based load balancing can be deployed for Oracle or hardware-based load balancers, such as Cisco ACE, can be implemented to take advantage of enhanced performance and security. The storage array used with the Vblock System should be tuned based on best practices available from Oracle and EMC. In addition, tuning the Oracle application tier servers and database server will allow further performance and scalability enhancements. 50

51 Conclusion With Vblock Systems, VCE delivers the industry's first completely integrated IT offering that combines best-in-class virtualization, networking, computing, storage, security, and management technologies with end-to-end vendor accountability. This paper was written to demonstrate the simplicity and ease with which you can virtualize a physical Oracle RAC database on a Vblock System. Virtualizing Oracle EBS applications on a Vblock System provides a number of key values: Containment of server sprawl and increased server utilization. Dynamic, non-disruptive migration of Oracle instances on virtual machines to other systems to perform hardware maintenance or system changes without disruption. Improved operational agility through live virtual machine migration to accommodate dynamic workloads. Fast provisioning of pre-configured Oracle EBS environments using vsphere templates. Automatic detection and restart of failed Oracle EBS virtual machines with VMware HA. 51

52 Appendix A: Configuring SSH for User Equivalence Configuring SSH for User Equivalence provides a secure means of copying files and executing programs on nodes in the cluster without requiring passwords prompts. Secure Shell configuration is covered in detail in the Oracle Real Application Clusters Installation Guide and Oracle Grid Infrastructure Installation Guide. Note: Refer to Appendix E in Oracle Grid Infrastructure Installation Guide 11g Release 2 (11.2) for further details on manual set up of SSH. The main steps to configure SSH for User Equivalence are: 1. Create authentication keys (rsa and dsa) using ssh-keygen on the new virtual node (oel5u4- rac1) as the grid user. 2. Authorize access to the new virtual node using the local key by copying the public key into the ~/.ssh/authorized_keys file (for example, [[email protected]]$ cat id_rsa.pub >> authorized_keys) 3. Copy the ~/.ssh/authorized_keys files to other systems to allow access from the local system (for example, [[email protected]]$ scp authorized_keys oel5u4- rac1:/home/grid/.ssh) 4. Repeat this procedure for each newly added virtual node and other existing physical nodes in the cluster. The following is an example of configuring SSH for User Equivalence. 52

53 ~]# su grid ~]$ /usr/bin/ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/home/grid/.ssh/id_rsa): Created directory '/home/grid/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/grid/.ssh/id_rsa. Your public key has been saved in /home/grid/.ssh/id_rsa.pub. The key fingerprint is: f0:97:07:16:37:38:29:3f:d0:b7:9f:23:9f:d9:41:27 ~]$ /usr/bin/ssh-keygen -t dsa Generating public/private dsa key pair. Enter file in which to save the key (/home/grid/.ssh/id_dsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/grid/.ssh/id_dsa. Your public key has been saved in /home/grid/.ssh/id_dsa.pub. The key fingerprint is: f9:0b:06:c4:44:2f:cf:2a:0c:eb:68:03:cd:be:87:16 rac1.mordor.vce ~]$ cd.ssh cat id_rsa.pub >> authorized_keys cat id_dsa.pub >> authorized_keys ~]$ cd.ssh ssh oel5u4-rac1 cat /home/grid/.ssh/authorized_keys >> authorized_keys ssh oel5u4-rac1 cat /home/grid/.ssh/authorized_keys >> authorized_keys scp authorized_keys oel5u4-rac1:/home/grid/.ssh 53

54 ABOUT VCE VCE, formed by Cisco and EMC with investments from VMware and Intel, accelerates the adoption of converged infrastructure and cloud-based computing models that dramatically reduce the cost of IT while improving time to market for our customers. VCE, through the Vblock Systems, delivers the industry's only fully integrated and fully virtualized cloud infrastructure system. VCE solutions are available through an extensive partner network, and cover horizontal applications, vertical industry offerings, and application development environments, allowing customers to focus on business innovation instead of integrating, validating, and managing IT infrastructure. For more information, go to Copyright 2013 VCE Company, LLC. All Rights Reserved. Vblock and the VCE logo are registered trademarks or trademarks of VCE Company, LLC and/or its affiliates in the United States or other countries. All other trademarks used herein are the property of their respective owners.