How do I...Setup a subdomain?

 The walkthrough below explains how to add a new forums subdomain.  Refer here for information on setting up virtual hosts with Apache. 

Note: The steps below follow some Debian conventions.

1. Make sure you have the following at the very top of one of your apache config files (example:  /etc/apache2/sites-available/deki)

NameVirtualHost *

2. Create a new virtual host configuration file under /etc/apache2/sites-available:

<VirtualHost *>
        ServerName forums.myserver

        ErrorLog /var/log/apache2/error.log
        CustomLog /var/log/apache2/access.log common

        DocumentRoot "/var/www/forum"
</VirtualHost>

3. create a symlink to sites-enabled

ln -s /etc/apache2/sites-available/<configFileName> /etc/apache2/sites-enabled/<configFileName>

Note: if you'd like the config files to be loaded in a specific order, create the symlink like this:

ln -s /etc/apache2/sites-available/forums /etc/apache2/sites-enabled/001-forums
ln -s /etc/apache2/sites-available/blog /etc/apache2/sites-enabled/002-blog

In this case, the forums VirtualHost will be processed before the blog VirtualHost

4. reload apache

/etc/init.d/apache2 force-reload

5. add the DNS entry for forums.<servername>