userid is not printed in Apache access logs - apache

Question

I have a production setup as
webSEAL --> F5 --> 2 Apache --- 2 weblogic servers.
For every request webSEAL logs prints logged-in user-id and weblogic which is at the very last in infrastructure chain also have the user-id available in weblogic http access.log (not application log but weblogic internal access logs) but there's nothing shown in Apache.
Even when I added new logging configuration at apache, it's not printing the user_id in apache access logs.It just print a dash - (information not available).
following is the added configuration in httpd.conf and output.
LogFormat "%h %V %u %t \"%r\" %>s" test
CustomLog logs/testLogs testFormat
***192.168.44.53 localhost - [11/Jun/2015:23:21:39 +0200] "HEAD / HTTP/1.1" 200***
What else do I need to do to "make user-id available to Apache instance".
This is the reference for Apache 2.0X which I'm using in my environment.
http://httpd.apache.org/docs/2.0/logs.html

Answer 1

The %u pattern code logs the remote username if the request was authenticated with HTTP Basic or Digest authentication. In the example log entry this value is "-", meaning that the request was not authenticated with HTTP Basic or Digest authentication.
You can use Apache to log client IP addresses utilizing X-Forwarded-For headers .
The standard LogFormat directive:
LogFormat “%h %l %u %t “%r” %>s %b” common
To add the clients source IP address, just change this to:
LogFormat “%h %l %u %t “%r” %>s %b %{X-Forwarded-For}i” common
Standard logs:
192.168.2.210 – – [09/Feb/2011:09:59:31 +0000] “GET / HTTP/1.1″ 200 44
Client IP’s added:
192.168.2.210 – – [09/Feb/2011:10:00:16 +0000] “GET / HTTP/1.1″ 200 44 192.168.2.7