Pointing a subdomain to another IP via Apache

Is it possible, using only Apache, to point a subdomain at a specific IP address?

We currently have a primary domain(www.example.com) with 250+ subdomains(site1.example.com, site2.example.com, etc). Due to rules regarding an SSL cert, we now have to place www.example.com on it's own IP address(although it still resides on the 开发者_Go百科same server).

The subdomains are currently configured as alias records, so creating 250+ new A records for each subdomain would be a major hassle.

I would love an Apache-based solution to this problem so that I don't have to spend the rest of my day configuring DNS records.

You can make mod_proxy pass all requests from one virtual host to another server, which sounds like exactly what you're looking for.

<VirtualHost *:80>
        ServerAdmin you@your.com
        ServerName your.vhost.your.com

        ProxyRequests Off
        <Proxy *>
                Order deny,allow
                Allow from all
        </Proxy>
        ProxyErrorOverride On
        ProxyPass / http://your.realhost.com/
        ProxyPassReverse / http://your.realhost.com/
        <Location />
                Order allow,deny
                Allow from all
        </Location>

</VirtualHost>

You could also do this with mod_rewrite and the [P] option, which can give you a lot more flexibility.