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From Igor Cicimov <icici...@gmail.com>
Subject Re: [users@httpd] Proxy balancer and Apache Virtual Host rewrite single HTTP header
Date Fri, 04 Oct 2013 05:05:12 GMT
On Fri, Oct 4, 2013 at 11:00 AM, Frank X <morph@paragenic.com> wrote:

> We have the following configuration, one apache HTTP server which proxies
> AJP requests to an application on another host, as in the Proxy balancer
> configuration below.
>
> The problem we have is the application only understands one HOST http
> header, i.e exampledomain.com, but we require www.exampledomain.com to be
> rewritten to exampledomain.com however still show the
> www.exampledomain.com address.
>

Try adding ProxyPreserveHost. Also which header are you checking on the
backend side for the host name?

> We also have HTTP proxies in between the browser and hitting the Apache
> server, and do not want this content to be cached!
>
Ok, but I fail to understand the need of a variable here at all?

> The following is our configuration:
>
> <Proxy balancer://ajp-cluster>
> Order deny,allow
> Allow from all
> BalancerMember ajp://10.10.10.11:8009
> </Proxy>
>
> <VirtualHost *:80>
> ServerName exampledomain.com
> ServerAlias exampledomain.com *.exampledomain.com
>    RewriteEngine on
>    RewriteCond %{HTTP_HOST} ^www.exampledomain.com
>    RewriteRule ^/(.*)$ http://exampledomain.com/$1 [L,R=301,E=nocache:1]
>    ## Set the response header if the "nocache" environment variable is set
>    ## in the RewriteRule above.
>    Header always set Cache-Control "no-store, no-cache, must-revalidate" env=nocache
>    ## Set Expires too ...
>    Header always set Expires "Thu, 01 Jan 1970 00:00:00 GMT" env=nocache
>    ProxyPass / balancer://ajp-cluster/
>    ProxyPassReverse / balancer://ajp-cluster/
>    </VirtualHost>
>
>  Your balancer talks AJP to the backend server which is different from
HTTP. Also, I'm not sure you can use a variable set in the request phase in
your response rules.

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