====== CentOS: Apache Optimization ======

  * [[Apache]]
  * [[Apache Tuning]]
  * [[CentOS]]
  * [[CentOS Apache]]

==== Modules ====

You can remove certain Apache modules from loading simply by editing ''httpd.conf'' and commenting out the unwanted modules starting with the ''LoadModule'' directive, and then restarting Apache.

Some common modules to disable that are rarely used, include:

  * mod_autn_anon
  * mod_authn_dbm
  * mod_authz_owner
  * mod_authz_groupfile
  * mod_authz_dbm
  * mod_ldap
  * mod_authnz_ldap
  * mod_usertrack
  * mod_dav
  * mod_dav_fs
  * mod_actions (CGI support)
  * mod_speling
  * mod_proxy
  * mod_proxy_balancer
  * mod_proxy_ftp
  * mod_proxy_http
  * mod_proxy_connect
  * mod_cgi (CGI support)

==== Features ====

CentOS ships with a lot of features enabled by default that are probably not necessary.

== Documentation Manual ==

Apache will show the server documentation by default at the ''/manual'' URL of the server.  You can remove this simply by deleting the ''manual.conf'' file and restarting apache.

<code>
rm -fv /etc/httpd/conf.d/manual.conf
/etc/init.d/httpd restart
</code>

== AJP Proxy ==

  * [[http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html|mod_proxy_ajp]]

Proxy module for AJP backend servers (such as Tomcat).  The module is loaded by default.

<code>
rm -fv /etc/httpd/conf.d/proxy_ajp.conf
/etc/init.d/httpd restart
</code>

== Perl ==

Mod_perl incorporates a Perl interpreter into the Apache web server, so that the Apache web server can directly execute Perl code.

<code>
rm -fv /etc/httpd/conf.d/perl.conf
/etc/init.d/httpd restart
</code>

== Python ==

Mod_python is a module that embeds the Python language interpreter within the server, allowing Apache handlers to be written in Python.

<code>
rm -fv /etc/httpd/conf.d/python.conf
/etc/init.d/httpd restart
</code>

== Squid ==

Squid is installed by default, and you can remove the package from CentOS directly, or just remove the configuration file.

<code>
yum -y remove squid
/etc/init.d/httpd restart
</code>

Uninstalling squid will remove the squid.conf as well.  Or you can do it manually.  Either way, be sure to restart the web server.

<code>
rm -fv /etc/httpd/conf.d/squid.conf
/etc/init.d/httpd restart
</code>

== Webalizer ==

Webalizer is also installed by default, and you can remove the package from CentOS directly, or just remove the configuration file.

<code>
yum -y remove webalizer
/etc/init.d/httpd restart
</code>

Uninstalling squid will remove the webalizer.conf as well.  Or you can do it manually.  Either way, be sure to restart the web server.

<code>
rm -fv /etc/httpd/conf.d/webalizer.conf
/etc/init.d/httpd restart
</code>