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From Eric Covener <>
Subject Re: [users@httpd] configuring a proxy fallback
Date Thu, 17 May 2018 14:48:50 GMT
On Thu, May 17, 2018 at 10:42 AM, John Bazik <> wrote:
> Here's something I think I can't do with apache.
> I have a uwsgi backend server and a legacy http server.  I would like a
> reverse proxy that puts the dynamic site "in front of" the legacy site,
> such that 404s from the former are internally redirected to the latter.
> We have this implemented in nginx, but I recently needed to switch the
> proxy to apache.  ErrorDocument is the obvious hook, but it has to be
> a local url.  I've looked at the rewrite engine and balancer groups,
> and I haven't found any way to do this.  I was about ready to give up
> and thought I'd see if smarter people than me have an answer.

FallBackResource may be one option. Another might be the "lookahead"
feature in mod_rewrite. Another is to poke and prod with -d/-f tests
in mod_rewrite if you can determine that way.

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