HP WebQoS Software manual Role and Benefits of HP WebQoS

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Understanding HP WebQoS

The Role and Benefits of HP WebQoS

The Role and Benefits of HP WebQoS

HP WebQoS is an enhancement to your operating environment that stabilizes, optimizes, and prioritizes Internet-related applications and transactions that run on Windows 2000 and NT servers (Windows) and

SPARC1 servers (Solaris1 operating environment). HP WebQoS works with web-enabled applications built on top of the iPlanet Web Server1

version 4.1 (UNIX®) and Microsoft® IIS2 (Internet Information Server) version 4.0 (Windows NT) and version 5.0 (Windows 2000).

HP WebQoS enables you to use your resources efficiently to deliver predictable and differentiated service levels for your web-based applications, based on the type of customer or transaction. It allows you to determine these service levels based on business policies.

Although the Internet represents significant opportunities for expanding your business, the following risks may hamper your ability to deliver web-based services to customers and partners reliably:

Unpredictable and possibly fluctuating demand for services.

Because the Internet offers instantaneous access to your site, promotional, seasonal, or current events may instigate sudden and immediate interest in your services. Although the additional interest and business may be welcome, your server may not be able to handle the load if significant numbers of clients come all at one time. Or if you are a service provider hosting multiple sites on one server, you should make sure that the demands of one site do not restrict use by other sites on the same server.

Heavier than expected system processing per user request.

The actual workloads exhibited by each visitor to your site may not align with the workload models you generated during the capacity planning stage. Perhaps users are performing far more searches than you anticipated or are spending a lot more time performing compute intensive operations while at your site.

1.SPARC, Solaris, and the iPlanet Web Server are products of Sun Microsystems, Inc.

2.Microsoft IIS is a product of Microsoft Corporation.

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Chapter 1

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Contents Edition E0801Legal Notices Contents Services, Sites, and Systems Troubleshooting Policy and Rule Descriptions Synopsis Arguments Return Value Sample Program Contents Printing History Page Understanding HP WebQoS Role and Benefits of HP WebQoS Role and Benefits of HP WebQoS Service WebQoS ConceptsRequest Classifications SessionsCapacity Protection SLOs, Thresholds, and Corrective ActionsRole and Benefits of HP WebQoS How WebQoS Fits Into Your Environment WebQoS in Your EnvironmentWebQoS Components WebQoS ComponentsComponent Installed On Description Management SCA ServiceWeb Services SCI ServiceHow WebQoS Fits Into Your Environment Chapter Setup WebQoS Software Installation WebQoS Configuration FilesSCA and Web Server Parameter Web Server ParametersDefault HTTP/1.1 MonitorInterval seconds SCA Parameters SCO Parameters Logging and Tracing Parameters Unix Only URL Encoding Parameters WebQoS setup Script Unix Restarting Individual WebQoS ComponentsRestarting WebQoS Components Unix Restarting WebQoS Components WindowsSingle Server Setup Continue? Multiple Server Setup Server 1 Setup Servers 2 and 4 Setup Server 3 Setup Opt/webqos/install/setup -r Removing WebQoSWebQoS setup Script Unix Chapter Management Console Management Console Login WebQoS Login Dialog BoxConsole Main Screen Management Console Main ScreenWindow Area Description Console Main Screen Services/Systems View Auto DiscoveryConsole Administration PasswordDomain Management Console Administration Chapter Templates Preconfigured and Default Templates Default TemplatesPreconfigured Templates Service Template DescriptionFor the service template Service Template StatisticsService Statistics StatisticsURL Group Statistics Service Template SLOs SLOsAdd/Edit Service Level Objectives Add/Edit SLOsAdd/Edit Corrective Actions Service Template Advanced AdvancedDefer Defer Corrective ActionRedirect Redirect Corrective ActionReject Reject Corrective ActionSite Template 10 Site Template DescriptionClassification Rules 11 Site Template Classification RulesAdd/Edit Classification Rules 12 Add/Edit Request Classifications Rules13 Site Template SLOs Add/Edit SLOs 15Add/Edit Corrective Actions Threshold Policies 16 Site Template Threshold PoliciesAdd/Edit Threshold Policies 17 Add Thresholds Dialog Box18Add/Edit Corrective Actions 19 Edit Site Configuration Advanced Dialog Box Session Timeouts 20 Site Advanced Session Timeouts Dialog BoxWeb Server Accept Threads Corrective Action Policy Details22 Defer Corrective Action 23 Redirect Corrective Action 24 Reject Corrective Action Site Statistics 25 Site Template StatisticsSite Template Site Template Chapter Services, Sites, and Systems Services Add a ServiceEdit a Service Move a ServiceDelete a Service Sites Add a SiteEdit a Site Move a SiteDelete a Site Microsoft IISIPlanet Web Server Starting and Stopping IISSystems Add a SystemDelete a System Systems Systems Chapter Statistics Service Statistics Service SLO Related StatisticsService SLO Related Statistics Service Session Control Statistics Service Session Control StatisticsService Defer Related Statistics Service Defer Related StatisticsSite Statistics Site StatisticsSite SLO Related Statistics Site SLO Related StatisticsSite Session Control Statistics Site Session Control StatisticsSite Statistics Site Statistics Chapter Logs and Filters Service Level Objectives View Service Level Objectives ViewSLOs, Thresholds, and the History Log SLOs, Thresholds, and the History Log History Log View History Log View SLO and Threshold Filters SLO and Threshold FiltersSLO Filters History Log Filter History Filters DialogChapter 103 Service and Site Statistics OpenView LogsSite Measurements Policy and Corrective Action Events Field Values Chapter 107 108 Troubleshooting Troubleshooting on Unix Management Console Error MessagesShared Memory Error Logging and Tracing Logging TracingMeasurement Logging Statistics LoggingChapter 113 Troubleshooting on Windows Problems with Shared MemoryResetting the Management Console Password Error Messages Viewable From the Management Console Logging and Tracing Registry Editor Window for WebQoS Deleting WebQoS Log and Trace Files118 Policy and Rule Descriptions Request Classification Rules Appendix a 121 Service Level Objectives for Site Policies Set in WebQoSService Level Objectives for the Service Threshold Policy Corrective Actions for SLO and Threshold Policy ViolationsCustomizing the Defer and Reject Web Pages 126 Appendix a 127 Request to be retried see Figure A-2 Figure A-2 Example of Custom Defer Page with LinkAppendix a 129 Expired see Figure A-3 Figure A-3 Example of Custom Defer Page with Popup DialogAppendix a 131 132 External Measurement API Using the External Measurement API Appendix B 135 WqCreateConnection SynopsisArguments Return ValueWqSendMeasurement Values in the following formatReturn Values Status WqCloseConnection Connection with WebQoS has been closedSample Program Appendix B 141 142 Glossary Class See request classification rule144 145 146 Index 148 149 150
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