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Manual Chapter: Administrator Guide for the BIG-IP WebAccelerator Module: 4 - Troubleshooting and the Rewrite Engine
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4

Troubleshooting and the Rewrite Engine


Using the error and status log files to troubleshoot

The WebAccelerator system stores information and error messages for the following processes:

  • tomcat
  • intelligence interface
  • pvac

When troubleshooting issues with the WebAccelerator system processes, you can look in the log files for these process to see if error conditions exist. By default, the WebAccelerator system rotates these files on an hourly basis. For information about how to configure log file rotation, see Changing log file monitoring parameters , located in Chapter 3.

Use these log files for troubleshooting purposes only. For daily WebAccelerator system monitoring, use SNMP. See Chapter 6, Monitoring with SNMP for more information.

tomcat

The tomcat process hosts the Configuration utility user interface.

The tomcat log files are located in:

/var/log/tomcat4/catalina.out

intelligence interface

The intelligence interface process publishes acceleration policies (and changes to acceleration policies) to the WebAccelerator system.

The intelligence interface log files are located in:

/var/log/tomcat4/localhost_waui_log.txt

pvac

The pvac process manages HTTP and HTTPS traffic.

The pvac log files are located in:

/var/log/wa/pvacLog_8081

Using the Rewrite Engine scripts to manipulate HTTP responses

The WebAccelerator system's Rewrite Engine uses a proprietary language to manipulate HTTP responses from origin servers. After the WebAccelerator system manipulates the HTTP responses, it processes the responses. Therefore, the WebAccelerator system processes manipulated responses, rather than the original responses that are sent by the origin servers.

For specific information using rewrite scripts, see Appendix B, Processing HTTP Response Headers, in the Policy Management Guide for the BIG-IP WebAccelerator Module.

For information about how to create customized rewrites scripts, contact your F5 Networks Consultant.




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