To Collect Debug Data for the Load Balancer Plug-in

The locations of the following libraries referenced in this procedure depend on the OS and Web server version you are using:

• libpassthrough.so for the Sun Web server on UNIX platforms, passthrough.dll on Windows

• mod_loadbalancer.so for the Apache Web server on UNIX platforms, mod_loadbalancer.dll on Windows

• sun-passthrough.dll for Microsoft IIS (Windows only)

1. Check the plug-in version with the following command (UNIX only):

   • Web Server 6.0 or Web Server 6.1

     strings libpassthrough.so | grep BuildId

   • Apache Web server

     strings mod_loadbalancer.so | grep BuildId

2. Verify the checksum of the plug-in library using one of the following commands:

   • cksum

   • elfdump —k

   • sum

   • md5sum

3. Edit and add the relevant configuration files to generate more debug information.

   • Sun Java Web Server 6.0

     Solaris, HP-UX,
     Linux

     Edit the server-root/web-identifier/config/magnus.conf file, adding the following line at the end:

     LogVerbose on

     Windows

     Edit the server-root\web-identifier\config\magnus.conf file, adding the following line at the end:

     LogVerbose on

   • Sun Java Web Server 6.1

     Solaris, HP-UX,
     Linux

     Edit the server-root/web-identifier/config/server.xml file, setting the loglevel property of the LOG element to FINEST.

     Windows

     Edit the server-root\web-identifier\config\server.xml file, setting the loglevel property of the LOG element to FINEST.

   • Apache

     Solaris, HP-UX,
     Linux

     Edit the server-root/config/httpd.conf file, setting the LogLevel option to debug.

     Windows

     Edit the server-root\confighttpd.conf file, setting the LogLevel option to debug.

4. Edit the server-root\web-identifier\config\loadbalancer.xml file and set the require-monitor-data property to true.

   <property name="require-monitor-data" value="true"/>

   This generates debug information for the Load Balancer plug-in in the Web server error log.