HP WebQoS Software Service Level Objectives for the Service, Threshold Policies, Appendix a 159

Page 159

Policy and Rule Descriptions

Policies Set in WebQoS

Concurrent sessions means the total number of sessions that have not expired (based on the conﬁguration of the advanced features discussed in “Modifying Session Timeouts” on page 74) and are possibly active. This number does not indicate the total number of sessions currently active on the system.

•Support at most NUMBER concurrent sessions

This SLO lets you support a speciﬁc NUMBER (for example, 1000) of concurrent sessions. The request classiﬁcation CLASS information is not supported.

Concurrent sessions means the total number of sessions that have not expired (based on the conﬁguration of the advanced features discussed in “Modifying Session Timeouts” on page 74) and are possibly active. This number does not indicate the total number of sessions currently active on the system.

Service Level Objectives for the Service

WebQoS offers the following SLO at the Service Level which provides you with an aggregate session count for the entire service.

•Support at most NUMBER concurrent sessions

This SLO lets you support a speciﬁc NUMBER (for example, 1000) of concurrent sessions. The request classiﬁcation CLASS information is not supported.

Concurrent sessions means the total number of sessions that have not expired and are possibly active.

Threshold Policies

Threshold policies are “internal” measures used to ensure that your system is operating in a reasonable performance range and does not get overloaded. They put limits on CPU load and queue depth.

If CPU load gets too high, your server may get into a thrashing state, causing few or possibly no requests to be satisﬁed in a timely fashion. If WebQoS queues begin to grow abnormally, this may signal a problem with your web server or an application/database process that it relies upon.

The threshold policies supported by WebQoS are:

Appendix A

159

Image 159

Contents Manufacturing Part Number B8311-90004 E0900 EditionLegal Notices Contents Using HP WebQoS Customizing and Using HP OpenView with HP WebQoS Installing and Using HP LocalDirector Controller Contents Contents Printing History Page Chapter Understanding HP WebQoSRole and Beneﬁts of HP WebQoS Role and Beneﬁts of HP WebQoSWebQoS Concepts ServiceRequest Classiﬁcations SessionsCapacity Protection Policy Based Service Level Objectives SLOs and Thresholds How WebQoS Fits Into Your Environment How WebQoS Fits Into Your EnvironmentWebQoS in Your Environment WebQoS Components Control Service ControlAgent SCA WebQoS RequestRequest and Management Data Flow Request and Management Data FlowHow WebQoS Fits Into Your Environment Chapter Installing HP WebQoS Installing HP WebQoS Conﬁguring HP WebQoS Conﬁguring HP WebQoS WebQoS Administrator’s Task FlowConﬁguring HP WebQoS Intos Flag Enabling Network Type of ServiceModifying Conﬁguration Files Before Start-Up Modifying Conﬁguration Files Before Start-UpSCA and Web Server Parameters Modifying WebQoS Global ConﬁgurationMonitorResponseTimeWeight Default 50% SCA Parameters SCO Parameters Denial of Service ParametersLogging and Tracing Parameters Error URL Encoding Parameters Conﬁguring Zeus Web Server Parameters Conﬁguring Your Web ServerZeus Web Server Conﬁguring Your Web ServerConﬁguring Your Web Server IP-Based Virtual Servers Subservers IPlanet Web ServerRunning the WebQoS setup Script Running the WebQoS setup ScriptOpt/webqos/install/setup -r Running setup -rConﬁguring WebQoS from the Management User Interface Conﬁguring WebQoS from the Management User InterfaceStarting the WebQoS Management User Interface WebQoS Login Dialog BoxManagement User Interface View Understanding the Management User InterfaceWindow Area Description Conﬁguring HP WebQoS Add System Conﬁguration Description Dialog Box Adding a SystemAdding a Service Add Service Conﬁguration Description Dialog Box To Conﬁgure Service Statistics Logging Add Service Conﬁguration Statistics Dialog Box To Conﬁgure Service Level Objectives for the Service Add a Service Conﬁguration SLO Dialog Box Add Service Level Objectives Dialog Box Add Corrective Actions Dialog Box To Specify Service-Wide Corrective Actions for SLOsModifying Service-Wide Corrective Actions 10 Edit Service Conﬁguration Dialog Box 11 Service Corrective Action Conﬁguration Defer Dialog Box Conﬁguring WebQoS from the Management User Interface You must enter either the URL of the website for example Service Corrective Action Redirect dialog box 13 Service Corrective Action Conﬁguration Reject Dialog Box Adding a Site To Identify the Web Server for the Site To Identify the Site15 Add Site Conﬁguration Web Server Dialog Box 16 Edit Site Conﬁguration Classiﬁcation Rules Dialog Box Prioritizing Requests to the Site17 Add Request Classiﬁcations Rules Dialog Box Setting Site Service Level Objectives 18 Add Site Conﬁguration SLOs Dialog Box 19 Add Service Level Objectives Dialog Box 20Add Corrective Actions Dialog Box To Specify Corrective Actions for Site SLOsAdding Site Threshold Policies 21 Edit Site Conﬁguration Threshold Policies Dialog Box 22 Add Thresholds Dialog Box 23Add Corrective Actions Dialog Box To Specify Corrective Actions for Threshold PoliciesConﬁguring Advanced Features for the Site 24 Edit Site Conﬁguration Advanced Dialog Box Modifying Session TimeoutsAssigning Web Server Request Queues 25 Site Advanced Session Timeouts Dialog Box26 Site Advanced Web Server Queue Management Dialog Box 27 Site Advanced Accept Threads Dialog Box Modifying Web Server Accept ThreadsTo Defer Site-Wide Corrective Actions Specifying Site-Wide Corrective ActionsTo Redirect Site-Wide Corrective Actions 29 Site Corrective Action Conﬁguration Redirect Dialog Box To Reject Site-Wide Corrective Actions Enabling Site Statistics Logging 30 Site Corrective Action Conﬁguration Reject Dialog Box31 Site Statistics Logging Dialog Box Verifying Your Conﬁguration Verifying Your ConﬁgurationUsing HP WebQoS Navigating the Services/Systems View Navigating the Services/Systems ViewTo Edit the Site’s Request Classiﬁcation Rules To Edit the Site Type and Service NameEditing a System Conﬁguration Editing a Site ConﬁgurationEditing a Site Conﬁguration To Edit the Site’s SLOsTo Edit a Site’s Threshold Policies Editing a Site Conﬁguration Threads to take effect To Apply Your Conﬁguration ChangesCopying a System or Site Copying a System or SiteDeleting a System, Service, or Site Deleting a System, Service, or SiteMonitoring SLOs and the History Log Understanding the Service Level Objectives ViewService Level Objectives View Monitoring SLOs and the History LogMonitoring SLOs and the History Log Understanding the History Log View History Log View Monitoring SLOs and the History Log Filtering SLOs and Thresholds Filtering SLOs and Thresholds100 Chapter Filtering the History Log Filtering the History LogChapter 101 102 Chapter Chapter 103 Displaying Site StatisticsViewing SLO Related Statistics Displaying Site Statistics104 Chapter Site Performance Statistics SLO Related StatisticsChapter 105 Viewing Site Session Control Statistics106 Chapter Site Session Control Statistics ScreenChapter 107 Displaying Service Performance StatisticsViewing Service SLO Related Statistics Displaying Service Performance Statistics108 Chapter Service Performance Statistics SLO Related StatisticsChapter 109 Viewing Service Session Control Statistics110 Chapter Service Session Control StatisticsChapter 111 Viewing Defer Related Statistics for the Service112 Chapter 11 Defer Statistics for the ServiceChapter 113 12 Detailed Defer Statistics for the Service114 Chapter Changing the PasswordConnecting to Another Management Station Changing the PasswordShared Memory TroubleshootingError Messages Viewable From the Management User Interface Troubleshooting116 Chapter PagesError Messages Viewable From the Terminal Window Logging and TracingChapter 117 118 Chapter Chapter 119 Troubleshooting 120 Chapter Chapter 121 OpenView with HP WebQoS122 Chapter Customizing and Using HP OpenView with HP WebQoSChapter 123 Data Flow of WebQoS to HP OpenView124 Chapter Installing and Conﬁguring the WebQoS SystemChapter 125 Installing and Conﬁguring the Service Reporter System126 Chapter Viewing WebQoS Reports in Service ReporterChapter 127 128 Chapter Installing, Conﬁguring and Using PerfViewInstalling, Conﬁguring and Using PerfView Logging WebQoS Site DataChapter 129 Logging WebQoS Service Data130 Chapter Viewing Graphs in PerfViewChapter 131 TIP132 Chapter Installing and Conﬁguring HP OpenView IT/OperationsInstalling and Conﬁguring HP OpenView IT/Operations Data Flow of WebQoS to HP OpenView IT/OperationsInstalling the Templates Getting a Quick StartChapter 133 134 Chapter Customizing the ITO TemplatesChapter 135 After editing136 Chapter Managing the WebQoS SystemTroubleshooting WebQoS Processes on HP-UX Error MessagesChapter 137 138 Chapter If Problems Occur But There Are No Error MessagesChapter 139 LocalDirector Controller140 Chapter What is HP LocalDirector Controller?What is HP LocalDirector Controller? HP LocalDirector ControllerConﬁguring Cisco LocalDirector Installing HP LocalDirector ControllerInstalling the Software Installing HP LocalDirector ControllerConﬁguring HP LocalDirector Controller Conﬁguring HP LocalDirector Controller142 Chapter Chapter 143 HP LDControlInstalling and Using HP LocalDirector Controller Conﬁguring the HP LDControl Server144 Chapter Chapter 145 Conﬁguring the HP LDControl DaemonHP LDControl Service Conﬁguration Screen HP LDControl Daemon Conﬁgurable Parameters146 Chapter Chapter 147 Starting and Stopping the HP LDControl Daemon HP LDControl Start/Stop Daemon148 Chapter HP LDControl Cannot Find Cisco’s LocalDirector Troubleshooting the HP LD ControllerGeneral Troubleshooting Conﬁguring a System with More than One LAN CardHP LDControl Daemon Error Log Messages and Actions HP LDControl Daemon150 Chapter Chapter 151 Error Action Message152 Chapter Ps -efagrep ldcagtChapter 153 Conﬁguring HP LocalDirector Controller 154 Chapter Appendix a 155 Policy and Rule DescriptionsRequest Classiﬁcation Rules Request Classiﬁcation Rules156 Appendix a Appendix a 157 158 Appendix a Service Level Objectives for SitePolicies Set in WebQoS Policies Set in WebQoSService Level Objectives for the Service Threshold PoliciesAppendix a 159 160 Appendix a Appendix a 161 Corrective Actions for SLO and Threshold Policy Violations162 Appendix a Customizing the Reject and Defer Web PagesAppendix a 163 Figure A-1 Default Defer164 Appendix a Figure A-2 Example of Custom Defer Page with LinkAppendix a 165 166 Appendix a Figure A-3 Example of Custom Defer Page with Popup DialogAppendix a 167 Policies Set in WebQoS 168 Appendix a Appendix B 169 HP OpenView IT/Operations ITO AlarmsIT/Operations Alarms IT/Operations AlarmsITO Alarms Based on WebQoS Events ITO Alarms Based on WebQoS Process MonitoringAppendix B 171 ITO Alarms Based on WebQoS Statistic Crossing a Threshold172 Appendix B Appendix B 173 WebQoS Statistic Variable Names for ITO Threshold Templates174 Appendix B WebQoS Statistic Variable Names for ITO Threshold Templates175 Glossary176 177 Service Level Objective SLO178 179 Index180 181 182

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