3.5.1. Apache

You have two options for running Bugzilla under Apache - mod_cgi (the default) and mod_perl. mod_perl is faster but takes more resources. You should probably only consider mod_perl if your Bugzilla is going to be heavily used.

These instructions require editing the Apache configuration file, which is:

  • Fedora/Red Hat: /etc/httpd/conf/httpd.conf
  • Debian/Ubuntu: /etc/apache2/apache2.conf
  • Mac OS X: /etc/apache2/httpd.conf

Alternatively, on Debian or Ubuntu, you can instead put the below code into a separate file in the directory /etc/apache2/sites-enabled/.

In these instructions, when asked to restart Apache, the command is:

sudo apachectl start

(or run it as root if your OS installation does not use sudo). Securing Apache

When external systems interact with Bugzilla via webservices (REST/XMLRPC/JSONRPC) they include the user’s credentials as part of the URL (in the “query string”). Therefore, to avoid storing passwords in clear text on the server we recommend configuring Apache to not include the query string in its log files.

  1. Edit the Apache configuration file (see above).

  2. Find the following line in the above mentioned file, which defines the logging format for vhost_combined:

    LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
  3. Replace %r with %m %U.

  4. Restart Apache. Apache with mod_cgi

To configure your Apache web server to work with Bugzilla while using mod_cgi, do the following:

  1. Edit the Apache configuration file (see above).
  2. Create a <Directory> directive that applies to the location of your Bugzilla installation. In this example, Bugzilla has been installed at /var/www/html/bugzilla. On Mac OS X, use /Library/WebServer/Documents/bugzilla.
<Directory /var/www/html/bugzilla>
  AddHandler cgi-script .cgi
  Options +ExecCGI +FollowSymLinks
  DirectoryIndex index.cgi index.html
  AllowOverride All

These instructions allow Apache to run .cgi files found within the Bugzilla directory; instructs the server to look for a file called index.cgi or, if not found, index.html if someone only types the directory name into the browser; and allows Bugzilla’s .htaccess files to override some global permissions.

On some Linux distributions you will need to enable the Apache CGI module. On Debian/Ubuntu, this is done with:

sudo a2enmod cgi

If you find that the webserver is returning the Perl code as text rather than executing it, then this is the problem. Apache with mod_perl

Some configuration is required to make Bugzilla work with Apache and mod_perl.


It is not known whether anyone has even tried mod_perl on Mac OS X.

  1. Edit the Apache configuration file (see above).

  2. Add the following information, substituting where appropriate with your own local paths.

    PerlSwitches -w -T
    PerlConfigRequire /var/www/html/bugzilla/mod_perl.pl


    This should be used instead of the <Directory> block shown above. This should also be above any other mod_perl directives within the httpd.conf and the directives must be specified in the order above.


    You should also ensure that you have disabled KeepAlive support in your Apache install when utilizing Bugzilla under mod_perl or you may suffer a performance penalty.

On restarting Apache, Bugzilla should now be running within the mod_perl environment.

Please bear the following points in mind when considering using Bugzilla under mod_perl:

  • mod_perl support in Bugzilla can take up a HUGE amount of RAM - easily 30MB per httpd child. The more RAM you can get, the better. mod_perl is basically trading RAM for speed. At least 2GB total system RAM is recommended for running Bugzilla under mod_perl.
  • Under mod_perl, you have to restart Apache if you make any manual change to any Bugzilla file. You can’t just reload–you have to actually restart the server (as in make sure it stops and starts again). You can change localconfig and the params file manually, if you want, because those are re-read every time you load a page.
  • You must run in Apache’s Prefork MPM (this is the default). The Worker MPM may not work – we haven’t tested Bugzilla’s mod_perl support under threads. (And, in fact, we’re fairly sure it won’t work.)
  • Bugzilla generally expects to be the only mod_perl application running on your entire server. It may or may not work if there are other applications also running under mod_perl. It does try its best to play nice with other mod_perl applications, but it still may have conflicts.
  • It is recommended that you have one Bugzilla instance running under mod_perl on your server. Bugzilla has not been tested with more than one instance running.

This documentation undoubtedly has bugs; if you find some, please file them here.