Web server plug-in troubleshooting tips


 

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Review...

PLUGINS_ROOT/logs/web_server_name/http_plugin.log

Review the Web server's error and access logs to see if the Web server is having a problem:

IBM HTTP Server and Apache access.log and error.log
Domino Web server httpd-log and httpd-error
Sun Java System access and error
Microsoft IIS timedatestamp.log

If these files don't reveal the cause of the problem, follow these additional steps.

 

Plug-in Problem Determination Steps

The plug-in provides very readable tracing which can be beneficial in helping to figure out the problem. By setting the LogLevel attribute in the config/plugin-cfg.xml file to Trace, we can follow the request processing to see what is going wrong.

For a Veritas File System with large file support enabled, file sizes up to two terabytes are allowed. In this case, if we set the LogLevel attribute in plugin-cfg.xml to LogLevel=Trace, then the http_plugin.log file might grow quickly and consume all available space on the file system. Therefore, you should set the value of the LogLevel attribute to ERROR or DEBUG to prevent high CPU utilization..

At a high level, complete these steps.

  1. The plug-in gets a request.
  2. The plug-in checks the routes defined in plugin-cfg.xml.
  3. It finds the server group.
  4. It finds the server.
  5. It picks the transport protocol, HTTP or HTTPS.
  6. It sends the request.
  7. It reads the response.
  8. It writes it back to the client.

We can see this very clearly by reading through the trace for a single request:

If none of these steps solves the problem:

For current information available from IBM Support on known problems and their resolution, see the following topics on the IBM support page:

For current information available from IBM Support on known problems and their resolution, see the IBM Support page. You should also refer to this page before opening a PMR because it contains documents that can save you time gathering information needed to resolve a problem.

We might find the following topics on the IBM support page helpful:





 

Related tasks


Communicating with Web servers