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From 1world1love <jd_co...@yahoo.com>
Subject Re: apache/tomcat/modjk URL path question
Date Thu, 22 Oct 2009 18:31:32 GMT

Thanks Rainer, that was very helpful and exactly what I was looking for,
although I am still having issues getting it working. For anyone who may
know, or have done this sort of thing. When I add in a rewrite, I get the
following in my rewrite log:

-applying pattern '^/path/(.*)' to uri '/path/MyApp/MyApp.html'
-rewrite '/path/MyApp/MyApp.html' -> '/MyApp/MyApp.html'
-local path result: /MyApp/MyApp.html
-prefixed with document_root to /htdocs/MyApp/MyApp.html
-go-ahead with /htdocs/MyApp/MyApp.html [OK]

And of course the document_root does not apply because apache maps the path
/Admin to tomcat via mod_jk and so I get a 404.

When I do a rewrite with the following:

RewriteRule ^/path/(.*)  https://%{HTTP_HOST}/$1 [L]

It does the rewrite and of course redirects to that URL, but that pushes it
back through the load balancer which, in turn, pushes it to serverA because
it doesn't see the /path part of the URL.

Any ideas?




Rainer Jung-3 wrote:
> 
> On 20.10.2009 16:59, 1world1love wrote:
>> I know that there is probably an easy solution to this, but all the posts
>> I
>> have found relating to this don't seem to match my scenario, and most of
>> them I frankly don't get.
>> 
>> My issue is this: I have a server running apache and tomcat. The server
>> is
>> behind a load balancer and firewall that manages mapping url paths to
>> specific servers. So we have a URL: http://example.com and based on the
>> path
>> it will do this:
>> 
>> http://example.com -> serverA (/app/htdocs)
>> http://example.com/path -> serverB (/app/htdocs/path)
>> 
>> I have an app in tomcat that I have mounted via JK. If I go to
>> http://myipaddress:8080/MyApp (by using the ip address I can bypass the
>> load
>> balancer) than my app loads. If I do http://myipaddress/MyApp my app
>> loads
>> (again bypassing the LB, but using the modjk). 
>> 
>> But if I do http://example.com/MyApp than obviously this won't work since
>> the LB will point to serverA. What seems to be at issue is that our
>> configuration requires that our http root be htdocs and that there be a
>> sub
>> called 'path' so that although there is a root '/' all of our content is
>> essentially served from '/path/' since the '/ ' URL will always go to
>> serverA.
>> 
>> So I have adjusted my modjk mount to handle requests that look like:
>> http://example.com/path/MyApp, but when tomcat tries to handle this,
>> obviously it can't find anything at /path/MyApp. It expects /MyApp.
>> 
>> I tried setting a context with path="/path/MyApp"  docBase="MyApp", but
>> that
>> didn't work. I still get a 404.
>> 
>> So, how can I specify that tomcat should expect '/path' in the URL for
>> all
>> potential apps?
> 
> Probably
> 
> http://tomcat.apache.org/connectors-doc/generic_howto/proxy.html
> 
> should contain answers.
> 
> Regards,
> 
> Rainer
> 
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