apache 2.4 exclude img from access log

Question

How do i exclude img files from my apache access log? I can't get it to work. I have tried to add this

  ## flag robots.txt requests
  SetEnvIf Request_URI "^/robots\.txt$" robots-request=log
  ## flag favicon requests
  SetEnvIf Request_URI "^/favicon\.ico$" favicon-request=nolog

  ## flag image requests
  SetEnvIf Request_URI "(\.gif|\.png|\.jpg)$" image-request=nolog

  ## flag Css and JS requests
  SetEnvIf Request_URI \.css css-request=nolog
  SetEnvIf Request_URI \.js js-request=nolog

   ## flag cron calls
   SetEnvIf Request_URI "(^/cron\.php|^/bgp-start/)" cron-request=nolog

   ## set do_not_log if any of the above flags are set
   SetEnvIf robots-request nolog do_not_log
   SetEnvIf favicon-request nolog do_not_log
   SetEnvIf image-request nolog do_not_log
   SetEnvIf css-request nolog do_not_log
   SetEnvIf js-request nolog do_not_log
   SetEnvIf cron-request nolog do_not_log

I added this to my apache2.conf

Answer 1

Add directives SetEnvIf and CustomLog to vhost configuration, such as:

<VirtualHost *:80>
  ErrorLog ${APACHE_LOG_DIR}/error.log
  LogLevel warn

  SetEnvIf Request_URI "\.png$|\.gif$|\.jpg$|\.js$|\.css$" is_exclude
  CustomLog ${APACHE_LOG_DIR}/access.log combined env=!is_exclude
</VirtualHost>