Apache proxying subdomain root requests - apache

Question

Description
Internal Tomcat server that has webapps listening on 8080:
"http://internal:8080/foo-webservice/"
"http://internal:8080/foo-website/"
External facing Apache server is proxying requests for a subdomain:
"http://foo.domain.com/"
Any requests of the root of the subdomain would be proxied to the foo-website webapp on Tomcat.
Any other requests would be proxied to the appropriate path / webapp
Use Case A
Request:
"http://foo.domain.com/index.html"
Proxied to:
"http://internal:8080/foo-website/index.html"
Use Case B
Request:
"http://foo.domain.com/webservice/listener.html?param1=foo&param2=bar"
Proxied to:
"http://internal:8080/foo-webservice/listener.html?param1=foo&param2=bar"
VirtualHost definition
Current virtual host definition which satisfies Use Case B:
<VirtualHost *:80>
ServerName foo.domain.com
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ErrorLog /var/log/apache2/foo_error.log
LogLevel warn
CustomLog /var/log/apache2/foo_access.log combined
# RewriteRules
# ?
# ProxyPass
ProxyPreserveHost On
ProxyPass / http://internal:8080/
ProxyPassReverse / http://internal:8080/
</VirtualHost>
Attempt 1
# RewriteRules
RewriteEngine On
RewriteRule ^/(.*) http://internal:8080/foo-website/$1 [P]
Use Case A is satisfied
Use Case B fails
Attempt 2
# RewriteRules
RewriteEngine On
RewriteRule ^/$ http://internal:8080/foo-website/$1 [P]
Use Case B is satisfied
Use Case A is not completely satisfied
The index.html in foo-website is loaded, but none of the files in the js, img or css folders.

Answer 1

ProxyPass rules match in order
ProxyPass /webservice/ http://internal:8080/foo-webservice/
ProxyPassReverse /webservice/ http://internal:8080/foo-webservice/
ProxyPass /website/ http://internal:8080/foo-website/
ProxyPassReverse /website/ http://internal:8080/foo-website/
ProxyPass / http://internal:8080/foo-website/
ProxyPassReverse / http://internal:8080/foo-website/
No rewrite rule. Isn't that good enough ?

Answer 2

I think that you need to use the first attempt but include the QSA (query string append) flag in the square brackets at the end of each RewriteRule directive.

Answer 3

I think the issue with Attempt 2 (none of the files in the js, img or css folders being mapped) was a sign that my approach was wrong.
My solution now is to redirect any requests to the root, to the foo-website webapp.
<VirtualHost *:80>
ServerName foo.domain.com
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ErrorLog /var/log/apache2/foo_error.log
LogLevel warn
CustomLog /var/log/apache2/foo_access.log combined
# RewriteRules
RewriteEngine On
RewriteRule ^/$ /foo-website/ [R]
# ProxyPass
ProxyPreserveHost On
ProxyPass / http://internal:8080/
ProxyPassReverse / http://internal:8080/
</VirtualHost>
This was not what I originally wanted, but I think this is the resolution.