HP WebQoS Software manual Role and Beneﬁts of HP WebQoS

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Understanding HP WebQoS

The Role and Beneﬁts of HP WebQoS

Corrective Actions Corrective actions help bring the violated SLO or threshold into compliance. You conﬁgure and prioritize corrective actions, which are executed when a violation occurs.

There are three types of corrective actions:

•Redirect requests to another system.

•Defer requests for a few moments until current sessions are completed.

•Reject low priority customers in extreme overload conditions.

16

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 BoxManagement Console Main Screen Console Main ScreenWindow Area Description Console Main Screen Services/Systems View Auto DiscoveryConsole Administration PasswordDomain Management Console Administration Chapter Templates Default Templates Preconﬁgured and 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 IISAdd a System SystemsDelete 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 OpenView Logs Service and Site StatisticsSite Measurements Policy and Corrective Action Events Field Values Chapter 107 108 Troubleshooting Management Console Error Messages Troubleshooting on UnixShared Memory Error Logging and Tracing Logging TracingMeasurement Logging Statistics LoggingChapter 113 Problems with Shared Memory Troubleshooting on WindowsResetting 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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