qoystg
Last Updated: February 25, 2016
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598
· glaszig
Cb96935c08d5b850f3fbf1c1f25196fe

Reverse Proxy a mountable Rails Engine with Apache

Last week I had to figure out how to proxy a mounted Rails engine with Apache.

To do this you'll have to properly wire up mod_proxy and mod_proxy_html:

<VirtualHost *:80>
  ServerName www.example.com

  ProxyPreserveHost Off

  RewriteEngine On
  RewriteRule   ^(?:/app)?/assets/swf/(.*) http://app.example.com/assets/swf/$1 [P]

  RedirectMatch /engine-name(.*) http://www.example.com/app$1

  <Location /app>
    ProxyPass        http://app.example.com/engine-name
    ProxyPassReverse http://app.example.com/engine-name
    SetOutputFilter  proxy-html
    ProxyHTMLDocType "<!DOCTYPE html>"
    ProxyHTMLURLMap  ^/assets http://app.example.com/assets R
    ProxyHTMLURLMap  ^/system http://app.example.com/system R
    ProxyHTMLURLMap  /engine-name/ /app/
    RequestHeader    unset Accept-Encoding
    Order            allow,deny
    Allow            from all
  </Location>
</VirtualHost>

Details about the intentions behind all these directives can be found in a blog post.

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