mod_proxy for same but versioned apps rooted at the same context on different hosts

["Piwoni, Andre" <Andre.Piwoni@xxxxxxxxxxxxxx>]

I have multiple instances of versioned application rooted at the same context but hosted on different machines. I have to access these applications externally via reverse proxy like Apache in the following way, if possible:

 

http://reverse_proxy_host/instance1/app maps to http://internal.host1.com/app

http://reverse_proxy_host/instance2/app maps to http://internal.host3.com/app

http://reverse_proxy_host/instanceN/app maps to http://internal.hostN.com/app

 

All links within our application are relative: /app/<resource>

 

Seems like an easy requirement but I have not been able to find solution for it using mod_proxy, mod_proxy + mod_rewrite. There seems to be solution that we have with mod_proxy + mod_proxy_html which modifies relative links to /instance1/app/<resource>. Is it the only way to accomplish this task?

 

Last soft requirement that I can live without is dynamic mappings. That is, preferably database driven but could be text file driven mapping configuration.

 

Also, I wanted to clarify that I'm not looking for a load balancing solution.

 

Any help appreciated including alternatives to Apache reverse proxy implementation.

 

Regards,

Andre Piwoni

 

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