Do you want log only specific request and not all http requests?

It’s easy with apache module setenvif_module

Your options (terms) for logging are:

• Remote_Host
• Remote_Addr
• Server_Addr
• Request_Method
• Request_Protocol
• Request_URI

for example i have some requests like this:

http://linux-sysadmin.org/cms/show_article/8001.html?query=2

http://linux-sysadmin.org/cms/show_categories/6025_1.html?query=5

I want log request which contain word article and number 8001

in httpd.conf:

SetEnvIf Request_URI (article) my_request
SetEnvIf Request_URI (8001) my_request

CustomLog “|/opt/apache/bin/rotatelogs /var/web/log/httpd-test-access.log 3600″ \

“%h \”%r\” %t \”%{Referer}i\”" env=my_request

That’s is easy, but what must i do if i want log request by query string?

Unfortunately SetEnvIf can’t work for this problem, but you can use mod_rewrite module

and combine it with SetEnvIf.

Example of use (i want log request where query string is ‘query=2′ + previous terms):

in httpd.conf:

RewriteEngine On

SetEnvIf Request_URI (article) my_request
SetEnvIf Request_URI (8001) my_request

RewriteCond %{QUERY_STRING}  (query=2)
RewriteRule  (.*)   $1 [E=my_request:yes]

CustomLog “|/opt/apache/bin/rotatelogs /var/web/log/httpd-test-access.log 3600″ \

“%h \”%r\” %t \”%{Referer}i\”" env=my_request

Easy?

I didn’t use special regexp. Of course, you can use very difficult regular (regexp) patterns

for find your specific request.

Tags: Apache Httpd, SetEnvIf, mod_rewrite, CustomLog, request