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[mario]

Dynamic DocumentRoot for Sub-Domains with RewriteEngine/RewriteCond/RewriteRule

If you have plenty of sub-domains and every subdomain routes in another directory on the server, it's annoying to add every subdomain to the apache.conf (httpd.conf) file.

This can be done dynamically.

Code Select Expand


DocumentRoot c:/webhosts/

[...]

<VirtualHost *>
ServerAlias www.yourdomain.com
ServerName www.yourdomain.com
RewriteEngine  on
RewriteCond    %{HTTP_HOST}  ^yourdomain.com
RewriteRule    ^(.*)$        /www/$1 [L]
RewriteCond    %{HTTP_HOST}  ^www.*
RewriteRule    ^(.*)$        /www/$1 [L]
RewriteCond    %{HTTP_HOST}  ^(.*)\.yourdomain\.com
RewriteRule    ^(.*)$        /%1/$1 [L]
</VirtualHost>


As you can see, the DocumentRoot is c:/webhosts/. This is the directory where all other sub-directories for the sub-domains are located.

We use the RewriteEngine to decide which directory we want. The first RewriteCond is to route the domain without any sub-domain into the www directory. The second RewriteCond demonstrates how the third RewriteCond works with any subdomain.

Code Select Expand


www.yourdomain.com  =>  c:/webhosts/www/
muon.yourdomain.com  =>  c:/webhosts/muon/