Installing additional Apache modules in SLES 11

Sometimes you need to install additional Apache HTTPD modules that are not in the main repos (maybe mad_proxy). Rather than rebuilding from source just add the following:

zypper ar http://download.opensuse.org/repositories/Apache:/Modules/SLE_11/Apache:Modules.repo Apache-Modules

In fact there are numerous extra repos you can add to your SLE or even openSUSE installs. Just navigate to http://download.opensuse.org/repositories/ and add the relevant repo.