Apache: Map (sub)domain to directories without changing documentroot

Question

I got the documentroot set up like this: var/www/html

What I'm trying to do is:

cms.domain.com --> var/www/html/cms

domain.com --> var/www/html/cms/sites/site1

I'm trying to accomplish this by using virtualhosts. The problem is I can't set a VirtualDocumentRoot for each (sub)domain because the sites use a bunch of scripts and configs, located in var/www/html/includes which are supposed to stay non public, and the apps call these with $_SERVER["document_root"].

What I've tried is this:

<VirtualHost *:80>  
    ServerName domain.com
    ServerAlias *.domain.com
    ServerAlias www.domain.com
    AliasMatch ^(.*)$ /cms/sites/site1/

    DocumentRoot /var/www/html

    <Directory /var/www/html>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    <IfModule mod_dir.c>
        DirectoryIndex index.php index.pl index.cgi index.html index.xhtml index.htm
    </IfModule>
</VirtualHost>

and for the subdomain:

<VirtualHost *:80>      
    ServerName cms.domain.com
    ServerAlias *.cms.domain.com

    AliasMatch ^(.*)$ /cms/

    DocumentRoot /var/www/html

    <Directory /var/www/html>
        Options Indexes FollowSymLinks
        AllowOverride All
        Require all granted
    </Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    <IfModule mod_dir.c>
        DirectoryIndex index.php index.pl index.cgi index.html index.xhtml index.htm
    </IfModule>
 </VirtualHost>

Doesn't work. I guess what I'm actually looking for is something to append the path after documentroot while keeping documentroot how it is.

It could be helpful to the reader to know what "Doesn't work" means. Where does apache pick the html files up from, when you `GET` cms.domain.com or respectively domain.com? — Tomáš Pospíšek, Dec 02 '17 at 23:47
One problem could be that cms.domain.com (2nd VirtualHost) is a subset of *.domain.com (first VirtualHost). So without studying the apache docu in detail, I can't say if apache will apply the 1st or the 2nd VirtualHost config, if you do a `GET` cms.domain.com. — Tomáš Pospíšek, Dec 02 '17 at 23:50
directories which are supposed to be "non-public" should never be in documentroot. Use ScriptAlias or similar to link to those. — ezra-s, Dec 04 '17 at 08:14

score 0 · Answer 1 · answered Dec 03 '17 at 09:36

You have a lot of conflicting configuration here. I would suggest creating a VirtualHost for domain.com and www.domain.com and another for *.domain.com and/or *.cms.domain.com with the AliasMatch. There is also precedence in VirtualHosts so domain.com should be last.

The easiest way out of the common config issue is to symlink /var/www/html/includes to each VirtualHost directory and then you at least have consistency.

Apache: Map (sub)domain to directories without changing documentroot

1 Answers1