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Cognos 8 & WebSphere · PDF file Proven Practice . Application Servers - IBM Cognos 8...

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  • Proven Practice

    Application Servers - IBM Cognos 8 & WebSphere Clustering

    Product(s): IBM Cognos 8.4, IBM WebSphere

    Area of Interest: Infrastructure

    DOC ID: AS03 Version 8.4.0.0

  • Application Servers – IBM Cognos 8 & WebSphere Clustering

    Copyright and Trademarks

    Licensed Materials - Property of IBM. © Copyright IBM Corp. 2009 IBM, the IBM logo, and Cognos are trademarks or registered trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at http://www.ibm.com/legal/copytrade.shtml

    While every attempt has been made to ensure that the information in this document is accurate and complete, some typographical errors or technical inaccuracies may exist. IBM does not accept responsibility for any kind of loss resulting from the use of information contained in this document. The information contained in this document is subject to change without notice. This document is maintained by the Best Practices, Product and Technology team. You can send comments, suggestions, and additions to [email protected]

    Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both.

    Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both.

    UNIX is a registered trademark of The Open Group in the United States and other countries.

    Java and all Java-based trademarks and logos are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.

    http://www.ibm.com/legal/copytrade.shtml mailto:[email protected]

  • Application Servers – IBM Cognos 8 & WebSphere Clustering

    TABLE OF CONTENT 1 Introduction ...........................................................................................................................................1

    1.1 Purpose..............................................................................................................................................1 1.2 Scope.................................................................................................................................................1 1.3 Definitions, Acronyms, and Abbreviations.......................................................................................1 1.4 References.........................................................................................................................................1 1.5 Assumptions......................................................................................................................................1

    2 WAS Clustering.....................................................................................................................................2 2.1 Overview...........................................................................................................................................2 2.2 Software Requirements .....................................................................................................................2 2.3 Clusters .............................................................................................................................................3 2.4 Cluster Types: Vertical & Horizontal ...............................................................................................4 2.5 Workload Management.....................................................................................................................6 2.6 Static Web Content Files...................................................................................................................6 2.7 Failover .............................................................................................................................................8

    3 Clustering and the IBM Cognos Application......................................................................................8 3.1 General..............................................................................................................................................8 3.2 Clustering without WLM..................................................................................................................9 3.3 Clustering with WLM .......................................................................................................................9 3.4 IBM Cognos Component Types......................................................................................................10 3.5 IBM Cognos Content Manager .......................................................................................................11 3.6 IBM Cognos Report Server / Application Tier Components ..........................................................12 3.7 IBM Cognos Servlet Gateway ........................................................................................................13 3.8 Drawbacks.......................................................................................................................................13

    4 Scenarios ..............................................................................................................................................14 4.1 Vertical Clustering by Component Type ........................................................................................14 4.2 Horizontal Clustering by Component Type ....................................................................................16 4.3 Web Server Farming .......................................................................................................................18 4.4 Clustering for Scalability ................................................................................................................20 4.5 IBM Cognos Servlet Gateway Clustering.......................................................................................22

    5 Clustering & IBM Cognos Setup .......................................................................................................24 5.1 Install and Configure the Software .................................................................................................24

    5.1.1 IBM WebSphere....................................................................................................................24 5.1.2 IBM Cognos Applicaiton ......................................................................................................25 5.1.3 Web Server ............................................................................................................................26

    5.2 IBM Cognos Setup Steps ................................................................................................................27 5.2.1 Install Order...........................................................................................................................27 5.2.2 General Setup ........................................................................................................................28 5.2.3 IBM Cognos Configuration ...................................................................................................28 5.2.4 IBM WebSphere....................................................................................................................28

    5.3 Additional Notes .............................................................................................................................31 6 IBM Web Site Information.................................................................................................................32

    6.1 WebSphere Web server plug-in connections ..................................................................................32

  • Cognos 8 & WebSphere Clustering 1

    1 Introduction

    1.1 Purpose

    Provide an understanding of how IBM WebSphere clustering works and provide a list of advantages and disadvantages as it relates to IBM Cognos ReportNet and IBM Cognos 8.

    1.2 Scope

    IBM WebSphere clustering only. Other Application Servers are not covered by this document although the same principles and concepts may apply.

    WebSphere clustering with failover assumes the inclusion of plugin support and therefore also entails communicating directly to the IBM Cognos ReportNet / IBM Cognos 8 dispatcher.

    This document is not intended to be an architectural design paper. The clustering concept will be used and IBM Cognos ReportNet / IBM Cognos 8 will be discussed at a component level (Content Manager, Application Tier and Servlet Gateway). Individual services may be further replicated or distributed in a client environment. Similarly, sizing and performance will not be discussed in this paper but may be indirectly referenced.

    1.3 Definitions, Acronyms, and Abbreviations

    Term Definition WAS IBM WebSphere Application Server IHS IBM HTTP Server (Apache) WLM IBM WebSphere Work Load Management

    1.4 References Ref. ID Author/Paper Location WebSphere Multi-Server Setup Configuring WebSphere for ReportNet

    1.5 Assumptions

    That the consumer of this document has prior knowledge of IBM WebSphere, IBM WebSphere Network Deployment, IBM HTTP Server, IBM WebSphere Plugins.

  • Cognos 8 & WebSphere Clustering 2

    2 WAS Clustering

    2.1 Overview

    Clustering provides the client with the ability to group together server instances either on the same physical system, diffe

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