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Editorial Team
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Asked: 2026-06-14T03:32:59+00:00

I use Apache as a reverse proxy. There is no web content on the

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I use Apache as a reverse proxy. There is no web content on the dedicated server itself. If a client requests a resource on the local Apache server, Apache should determine on which remote (proxied) server the resource exists and do a proxy rewrite to that server.

A snippet should (that currently does not work) should demonstrate, what i would do:

RewriteCond               http://200.202.204.11:3000%{REQUEST_URI}    -U
RewriteRule     ^(.*)$    http://200.202.204.11:3000$1                [P]

I spared out the rest of my configuration (ProxyPass, ProxyPassReverse, other RewriteCond,…) to focus on my problem:

How could I check if an external resource exists / is available before rewriting?

The -U option for RewriteCond returns alwas true. The -F option returns alwas false. Is there a working solution for my intent?

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1 Answer

  1. Editorial Team

    After searching for weeks to get the solution I come to the conclusion: there is no reliable RewriteRule if an external ressource exists.

    You go much better if you address your service behind an reverse proxy via subdomains. E.g. ‘gitlab.youdomain.net’ if you want to address a ressource on your gitlab server behind your reverse proxy. So the reverse proxy does not become confused if the ressource is lying in the root directory ‘/’ of the gitlab server.

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