Hi. I have a dedicated server (linux / rails / mongrel) that I'm
deploying to. I am able to deploy different applications to different
domains/subdomains just fine using the standard rails / mongrel /
apache config (as instructed from agile web second edition).

However, the kink is I need to deploy lots of rails applications under
the same domain. The reason for this is the applications need to be
directly callable from the parent application (at the root domain) via
AJAX so they need to be on the same domain. Calling an ajax request on
sub-domains fail. I know there are a bunch of javascript hacks, but
for now I'd like to just deploy the apps to the same domain (using
virtual folders to identify them).

Here is what I'm after:

http://[domain]         -> Rails Parent App (mongrel ports 8000-8001)
http://[domain]/app1/ -> Rails Child App 1 (mongrel ports 8010-8011)
http://[domain]/app2/ -> Rails Child App 2 (mongrel ports 8020-8021)
etc...

The mongrel instances are set up fine for all my apps. I just need to
fix up the mod_rewrite in order to forward the requests based on
folder name to different mongrel instances. I don't mind putting the
child app names and paths statically into the config for now.

What I have tried so far is using a rewrite rule that picks the
http://[domain]/app1/[rails path] and forwards it to the mongrel
cluster defined by app1_cluster.
RewriteRule ^/(.*)/app1/(.*)$ balancer://app1_cluster%{REQUEST_URI}
[P,QSA,L]

Needless to say, it doesn't work. I don't think the RewriteRule is
being hit because I cant get the /app1/ requests to hit the right
mongrel cluster. All I get is 404s. The parent rails app works fine at
the root of the domain. I'm guessing my RewriteRule is probably way
off.

Thanks in advance for any help you can offer.

-Jacques
[EMAIL PROTECTED]

Here is my full apache virtual server config file. Its mostly standard
issue from: http://mongrel.rubyforge.org/docs/apache.html
----
<VirtualHost 211.149.251.41>
        ServerName dev.you-comics.com

        DocumentRoot /var/www/apps/youcomics/current/public

        <Directory "/var/www/apps/youcomics/current/public">
          Options FollowSymLinks
          AllowOverride None
          Order allow,deny
          Allow from all
        </Directory>

        # Configure Mongrel Cluster
        <Proxy balancer://youcomics_cluster>
                BalancerMember http://127.0.0.1:8010
                BalancerMember http://127.0.0.1:8011
        </Proxy>


        <Proxy balancer://app1_cluster>
                BalancerMember http://127.0.0.1:8020
                BalancerMember http://127.0.0.1:8021
        </Proxy>

        RewriteEngine On

        # Prevent access to .svn directories
        RewriteRule ^(.*/)?\.svn/ - [F,L]
        ErrorDocument 403 "Access Forbidden"

        # Check for maintenance file and redirect all requests
        RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f
        RewriteCond %{SCRIPT_FILENAME} !maintenance.html
        RewriteRule ^.*$ /system/maintenance.html [L]

        # Rewrite index to check for static
        RewriteRule ^/$ /index.html [QSA]

        # Rewrite to check for Rails cached page
        RewriteRule ^([^.]+)$ $1.html [QSA]

        # Redirect all non-static requests to cluster
        RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f

        #app1
        RewriteRule ^/(.*)/app1/(.*)$ balancer://app1_cluster%{REQUEST_URI}
[P,QSA,L]

        #main dashboard
        RewriteRule ^/(.*)$ balancer://youtcomics_cluster%{REQUEST_URI}
[P,QSA,L]

        # Deflate
        AddOutputFilterByType DEFLATE text/html text/plain text/xml
        BrowserMatch ^Mozilla/4 gzip-only-text/html
        BrowserMatch ^Mozilla/4\.0[678] no-gzip
        BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

        ErrorLog logs/youcomics.com-error_log
        CustomLog logs/youcomics.com-access_log combined

</VirtualHost>
-----


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