Logging and Tracing | HP WebQoS Software specification

Using HP WebQoS

Troubleshooting

/etc/opt/webqos/qos.conf ﬁle. MaxPollDescriptors deﬁnes the maximum number of connections that are polled or checked for data.

Verify that MaxPollDescriptors is set to a reasonable value. If this message continues to appear, then the web server may be under a denial of service attack.

In this kind of denial of service attack, a “virtual vandal” is trying to ﬂood your web server with empty requests to try and prevent it from serving valid requests. WebQoS protects your web server from this type of attack by allowing the web server to continue to serve valid requests.

Error Messages Viewable From the Terminal Window

SCA: Couldn't open trace file.

SCA: Couldn't open logging file.

These SCA error messages may appear on the console if one of the following is true:

•The SCA is not started as root.

•The ﬁle system is full.

•The ﬁle system with the log or trace ﬁle is unmounted.

Logging and Tracing

The WebQos components use the following log ﬁles to record WebQoS related activity. You can use these ﬁles to monitor the WebQoS server and help with troubleshooting. The ﬁles are:

•/var/opt/webqos/logs/qoslog

•/var/opt/webqos/logs/qostrace

•/var/opt/webqos/measures

•/var/opt/webqos/logs/acclog

•/var/opt/webqos/logs/acctrace

Chapter 4

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HP WebQoS Software manual Error Messages Viewable From the Terminal Window, Logging and Tracing

Contents

Manufacturing Part Number B8311-90004 E0900 Edition Legal 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 WebQoS Role and Beneﬁts of HP WebQoS Role and Beneﬁts of HP WebQoS WebQoS Concepts Service Request 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 Agent SCA Service ControlWebQoS Request Control Request and Management Data Flow Request and Management Data Flow How WebQoS Fits Into Your Environment Chapter Installing HP WebQoS Installing HP WebQoS Conﬁguring HP WebQoS Conﬁguring HP WebQoS WebQoS Administrator’s Task Flow Conﬁguring HP WebQoS Modifying Conﬁguration Files Before Start-Up Enabling Network Type of ServiceModifying Conﬁguration Files Before Start-Up Intos Flag SCA and Web Server Parameters Modifying WebQoS Global Conﬁguration MonitorResponseTimeWeight Default 50% SCA Parameters SCO Parameters Denial of Service Parameters Logging and Tracing Parameters Error URL Encoding Parameters Zeus Web Server Conﬁguring Your Web ServerConﬁguring Your Web Server Conﬁguring Zeus Web Server Parameters Conﬁguring Your Web Server IP-Based Virtual Servers Subservers IPlanet Web Server Running the WebQoS setup Script Running the WebQoS setup Script Opt/webqos/install/setup -r Running setup -r Conﬁguring WebQoS from the Management User Interface Conﬁguring WebQoS from the Management User Interface Starting the WebQoS Management User Interface WebQoS Login Dialog Box Management User Interface View Understanding the Management User InterfaceWindow Area Description Conﬁguring HP WebQoS Add System Conﬁguration Description Dialog Box Adding a System Adding 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 SLOs Modifying 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 Site 15 Add Site Conﬁguration Web Server Dialog Box 16 Edit Site Conﬁguration Classiﬁcation Rules Dialog Box Prioritizing Requests to the Site 17 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 SLOs Adding 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 Policies Conﬁguring Advanced Features for the Site 24 Edit Site Conﬁguration Advanced Dialog Box Modifying Session Timeouts Assigning Web Server Request Queues 25 Site Advanced Session Timeouts Dialog Box 26 Site Advanced Web Server Queue Management Dialog Box 27 Site Advanced Accept Threads Dialog Box Modifying Web Server Accept Threads To Defer Site-Wide Corrective Actions Specifying Site-Wide Corrective Actions To 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 Box 31 Site Statistics Logging Dialog Box Verifying Your Conﬁguration Verifying Your Conﬁguration Using HP WebQoS Navigating the Services/Systems View Navigating the Services/Systems View Editing a System Conﬁguration To Edit the Site Type and Service NameEditing a Site Conﬁguration To Edit the Site’s Request Classiﬁcation Rules Editing a Site Conﬁguration To Edit the Site’s SLOs To Edit a Site’s Threshold Policies Editing a Site Conﬁguration Threads to take effect To Apply Your Conﬁguration Changes Copying a System or Site Copying a System or Site Deleting a System, Service, or Site Deleting a System, Service, or Site Service Level Objectives View Understanding the Service Level Objectives ViewMonitoring SLOs and the History Log Monitoring SLOs and the History Log Monitoring 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 Thresholds 100 Chapter Filtering the History Log Filtering the History LogChapter 101 102 Chapter Viewing SLO Related Statistics Displaying Site StatisticsDisplaying Site Statistics Chapter 103 104 Chapter Site Performance Statistics SLO Related Statistics Chapter 105 Viewing Site Session Control Statistics 106 Chapter Site Session Control Statistics Screen Viewing Service SLO Related Statistics Displaying Service Performance StatisticsDisplaying Service Performance Statistics Chapter 107 108 Chapter Service Performance Statistics SLO Related Statistics Chapter 109 Viewing Service Session Control Statistics 110 Chapter Service Session Control Statistics Chapter 111 Viewing Defer Related Statistics for the Service 112 Chapter 11 Defer Statistics for the Service Chapter 113 12 Detailed Defer Statistics for the Service Connecting to Another Management Station Changing the PasswordChanging the Password 114 Chapter Error Messages Viewable From the Management User Interface TroubleshootingTroubleshooting Shared Memory 116 Chapter Pages Error Messages Viewable From the Terminal Window Logging and TracingChapter 117 118 Chapter Chapter 119 Troubleshooting 120 Chapter Chapter 121 OpenView with HP WebQoS 122 Chapter Customizing and Using HP OpenView with HP WebQoS Chapter 123 Data Flow of WebQoS to HP OpenView 124 Chapter Installing and Conﬁguring the WebQoS System Chapter 125 Installing and Conﬁguring the Service Reporter System 126 Chapter Viewing WebQoS Reports in Service Reporter Chapter 127 Installing, Conﬁguring and Using PerfView Installing, Conﬁguring and Using PerfViewLogging WebQoS Site Data 128 Chapter Chapter 129 Logging WebQoS Service Data 130 Chapter Viewing Graphs in PerfView Chapter 131 TIP Installing and Conﬁguring HP OpenView IT/Operations Installing and Conﬁguring HP OpenView IT/OperationsData Flow of WebQoS to HP OpenView IT/Operations 132 Chapter Installing the Templates Getting a Quick StartChapter 133 134 Chapter Customizing the ITO Templates Chapter 135 After editing 136 Chapter Managing the WebQoS System Troubleshooting WebQoS Processes on HP-UX Error MessagesChapter 137 138 Chapter If Problems Occur But There Are No Error Messages Chapter 139 LocalDirector Controller What is HP LocalDirector Controller? What is HP LocalDirector Controller?HP LocalDirector Controller 140 Chapter Installing the Software Installing HP LocalDirector ControllerInstalling HP LocalDirector Controller Conﬁguring Cisco LocalDirector Conﬁguring HP LocalDirector Controller Conﬁguring HP LocalDirector Controller142 Chapter Chapter 143 HP LDControl Installing and Using HP LocalDirector Controller Conﬁguring the HP LDControl Server144 Chapter Chapter 145 Conﬁguring the HP LDControl Daemon HP 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 General Troubleshooting Troubleshooting the HP LD ControllerConﬁguring a System with More than One LAN Card HP LDControl Cannot Find Cisco’s LocalDirector HP LDControl Daemon Error Log Messages and Actions HP LDControl Daemon150 Chapter Chapter 151 Error Action Message 152 Chapter Ps -efagrep ldcagt Chapter 153 Conﬁguring HP LocalDirector Controller 154 Chapter Appendix a 155 Policy and Rule Descriptions Request Classiﬁcation Rules Request Classiﬁcation Rules156 Appendix a Appendix a 157 Policies Set in WebQoS Service Level Objectives for SitePolicies Set in WebQoS 158 Appendix a Service Level Objectives for the Service Threshold PoliciesAppendix a 159 160 Appendix a Appendix a 161 Corrective Actions for SLO and Threshold Policy Violations 162 Appendix a Customizing the Reject and Defer Web Pages Appendix a 163 Figure A-1 Default Defer 164 Appendix a Figure A-2 Example of Custom Defer Page with Link Appendix a 165 166 Appendix a Figure A-3 Example of Custom Defer Page with Popup Dialog Appendix a 167 Policies Set in WebQoS 168 Appendix a Appendix B 169 HP OpenView IT/Operations ITO Alarms ITO Alarms Based on WebQoS Events IT/Operations AlarmsITO Alarms Based on WebQoS Process Monitoring IT/Operations Alarms Appendix B 171 ITO Alarms Based on WebQoS Statistic Crossing a Threshold 172 Appendix B Appendix B 173 WebQoS Statistic Variable Names for ITO Threshold Templates 174 Appendix B WebQoS Statistic Variable Names for ITO Threshold Templates 175 Glossary 176 177 Service Level Objective SLO 178 179 Index 180 181 182