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Posted to users@httpd.apache.org by Mohammad Kargar - Indicee <Mo...@indicee.com> on 2008/07/21 04:19:07 UTC
[users@httpd] ProxyPass redirects the request
I'm using the following configuration to setup my local Apache as a
reverse proxy for the app server (let's call it
http://www.backend.com/). The problem is that apache server redirects
all the requests to /mytest/ to the backend (http://www.backend.com/)
instead of transparently providing the content from it.
Does anybody know what I'm missing here?
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass /mytest/ http://www.backend.com/
ProxyPassReverse /mytest/ http://www.backend.com/
-Thanks,
Mohammad
RE: [users@httpd] ProxyPass redirects the request
Posted by Mohammad Kargar - Indicee <Mo...@indicee.com>.
Followed the instructions from
http://www.apachetutor.org/admin/reverseproxies and finally ended up
with the new configuration below (this snippet added to the end of the
original httpd.conf). However still it doesn't work. Is there any way to
debug this code to see what the problem is?
LoadFile /usr/lib/libxml2.so.2
LoadModule proxy_html_module modules/mod_proxy_html.so
ProxyRequests Off
ProxyPass /test/ http://192.168.231.1/
ProxyHTMLURLMap http://192.168.231.1 /test
<Location /test/>
ProxyPassReverse /
SetOutputFilter proxy-html
ProxyHTMLURLMap / /test/
ProxyHTMLURLMap /test /test
RequestHeader unset Accept-Encoding
</Location>
Thanks,
Mohammad
-----Original Message-----
From: Mohammad Kargar - Indicee
Sent: Monday, July 21, 2008 8:42 AM
To: 'users@httpd.apache.org'
Subject: RE: [users@httpd] ProxyPass redirects the request
Thank you very much. It seems that
http://www.apachetutor.org/admin/reverseproxies is the one I need to
follow to solve the issue. While I'm doing so, I'd like to ask one more
question:
My original requirement is to implement a maintenance page. In other
words, all I need to do is to display a simple page with a simple
message saying that system is down for maintenance when we have to bring
down the back-end server. Not sure if setting up a reverse proxy for
this purpose is a good idea. Is there any other way to achieve the same
goal?
Thanks,
Mohammad
-----Original Message-----
From: Nick Kew [mailto:nick@webthing.com]
Sent: Monday, July 21, 2008 6:47 AM
To: users@httpd.apache.org
Subject: Re: [users@httpd] ProxyPass redirects the request
On Sun, 20 Jul 2008 19:19:07 -0700
"Mohammad Kargar - Indicee" <Mo...@indicee.com> wrote:
> Does anybody know what I'm missing here?
http://www.apachetutor.org/admin/reverseproxies
> ProxyPass /mytest/ http://www.backend.com/
>
> ProxyPassReverse /mytest/ http://www.backend.com/
That's only part of the story. If (as Joshua suggests)
you've got a javascript redirect, it can be seriously
challenging: you'll need mod_proxy_html's ProxyHTMLExtended
(for script embedded in HTML), or one of the sed-like
filters (mod_sed, mod_substitute, mod_line_edit) if
it's in a separate .js file.
--
Nick Kew
Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/
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Re: [users@httpd] ProxyPass redirects the request
Posted by Nick Kew <ni...@webthing.com>.
On Mon, 21 Jul 2008 08:41:59 -0700
"Mohammad Kargar - Indicee" <Mo...@indicee.com> wrote:
>
> Thank you very much. It seems that
> http://www.apachetutor.org/admin/reverseproxies is the one I need to
> follow to solve the issue. While I'm doing so, I'd like to ask one
> more question:
>
> My original requirement is to implement a maintenance page.
An ErrorDocument is often a good solution to that.
--
Nick Kew
Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/
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RE: [users@httpd] ProxyPass redirects the request
Posted by Mohammad Kargar - Indicee <Mo...@indicee.com>.
Thank you very much. It seems that
http://www.apachetutor.org/admin/reverseproxies is the one I need to
follow to solve the issue. While I'm doing so, I'd like to ask one more
question:
My original requirement is to implement a maintenance page. In other
words, all I need to do is to display a simple page with a simple
message saying that system is down for maintenance when we have to bring
down the back-end server. Not sure if setting up a reverse proxy for
this purpose is a good idea. Is there any other way to achieve the same
goal?
Thanks,
Mohammad
-----Original Message-----
From: Nick Kew [mailto:nick@webthing.com]
Sent: Monday, July 21, 2008 6:47 AM
To: users@httpd.apache.org
Subject: Re: [users@httpd] ProxyPass redirects the request
On Sun, 20 Jul 2008 19:19:07 -0700
"Mohammad Kargar - Indicee" <Mo...@indicee.com> wrote:
> Does anybody know what I'm missing here?
http://www.apachetutor.org/admin/reverseproxies
> ProxyPass /mytest/ http://www.backend.com/
>
> ProxyPassReverse /mytest/ http://www.backend.com/
That's only part of the story. If (as Joshua suggests)
you've got a javascript redirect, it can be seriously
challenging: you'll need mod_proxy_html's ProxyHTMLExtended
(for script embedded in HTML), or one of the sed-like
filters (mod_sed, mod_substitute, mod_line_edit) if
it's in a separate .js file.
--
Nick Kew
Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/
---------------------------------------------------------------------
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Re: [users@httpd] ProxyPass redirects the request
Posted by Nick Kew <ni...@webthing.com>.
On Sun, 20 Jul 2008 19:19:07 -0700
"Mohammad Kargar - Indicee" <Mo...@indicee.com> wrote:
> Does anybody know what I'm missing here?
http://www.apachetutor.org/admin/reverseproxies
> ProxyPass /mytest/ http://www.backend.com/
>
> ProxyPassReverse /mytest/ http://www.backend.com/
That's only part of the story. If (as Joshua suggests)
you've got a javascript redirect, it can be seriously
challenging: you'll need mod_proxy_html's ProxyHTMLExtended
(for script embedded in HTML), or one of the sed-like
filters (mod_sed, mod_substitute, mod_line_edit) if
it's in a separate .js file.
--
Nick Kew
Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/
---------------------------------------------------------------------
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See <URL:http://httpd.apache.org/userslist.html> for more info.
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RE: [users@httpd] ProxyPass redirects the request
Posted by Phil Lefort <Ph...@tumbleweed.com>.
You might want to try:
ProxyPass // http://www.backend.com/
ProxyPassReverse // http://www.backend.com/
References to mytest on the front-end will end up rendering
the mytest info in the back-end.
Good Luck,
Phil
Phil Lefort
PSO Senior Field Engineer
Office: 650-216-2173
Cell: 650-743-1917
phil.lefort@tumbleweed.com
www.tumbleweed.com
Gartner 2008 MFT Magic Quadrant
Tumbleweed Positioned in Leaders Quadrant
http://www.tumbleweed.com/mft
________________________________
From: Mohammad Kargar - Indicee [mailto:MohammadK@indicee.com]
Sent: Sunday, July 20, 2008 7:19 PM
To: users@httpd.apache.org
Subject: [users@httpd] ProxyPass redirects the request
I'm using the following configuration to setup my local Apache as a
reverse proxy for the app server (let's call it
http://www.backend.com/). The problem is that apache server redirects
all the requests to /mytest/ to the backend (http://www.backend.com/)
instead of transparently providing the content from it.
Does anybody know what I'm missing here?
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass /mytest/ http://www.backend.com/
ProxyPassReverse /mytest/ http://www.backend.com/
-Thanks,
Mohammad
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annotations on 08/03/08, 21:17:58
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Re: [users@httpd] ProxyPass redirects the request
Posted by Joshua Slive <jo...@slive.ca>.
On Mon, Jul 21, 2008 at 8:51 AM, Merton Campbell Crockett
<m....@roadrunner.com> wrote:
>
> On 20 Jul 2008, at 19:19:07, Mohammad Kargar - Indicee wrote:
>
> I'm using the following configuration to setup my local Apache as a reverse
> proxy for the app server (let's call ithttp://www.backend.com/). The problem
> is that apache server redirects all the requests to /mytest/ to the backend
> (http://www.backend.com/) instead of transparently providing the content
> from it.
>
> Does anybody know what I'm missing here?
>
> You probably want to use mod_rewrite. Look at one of Ralph Engelschall's
> monographs that provides insight on how to use it.
Ouch. That's a little like responding to someone who asked the
question "I'd like a glass of water please" with the response "Take a
look at these three advanced chemistry books."
There is nothing inherently wrong with the initial config setup posted
by Mohammad. The question is to figure out where the redirect is
coming from and why it isn't getting rewritten by ProxyPassReverse.
There is a good chance the redirect is coming from some javascript or
something similar on the back-end that can't be rewritten at the HTTP
header level.
So your first step should be to look at exactly what content the
back-end is returning in response to the requests and figure out why
they trigger a redirect at the browser. If you need help doing this,
people on this list can probably suggest some tracing tools.
Joshua.
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Re: [users@httpd] ProxyPass redirects the request
Posted by Merton Campbell Crockett <m....@roadrunner.com>.
On 20 Jul 2008, at 19:19:07, Mohammad Kargar - Indicee wrote:
> I’m using the following configuration to setup my local Apache as a
> reverse proxy for the app server (let’s call ithttp://www.backend.com/)
> . The problem is that apache server redirects all the requests to /
> mytest/ to the backend (http://www.backend.com/) instead of
> transparently providing the content from it.
>
> Does anybody know what I'm missing here?
You probably want to use mod_rewrite. Look at one of Ralph
Engelschall's monographs that provides insight on how to use it.
Merton Campbell Crockett
m.c.crockett@roadrunner.com