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We have two Apache server as front-end and 4 tomcat server as back-end configured using mod_proxy module as load balancer. Now, we want to exclude an single tomcat url from the mod_proxy load balancer. Is there any way or rule to exclude?

Proxy Balancer Setting:

<Proxy balancer://backend-cluster1>
   BalancerMember http://10.0.0.1:8080 loadfactor=1 route=test1 retry=10
   BalancerMember http://10.0.0.2:8080 loadfactor=1 route=test2 retry=10
</Proxy>
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2 Answers 2

You exclude paths from mod_proxy with an exclamation mark (!) before your full ProxyPass statement, which your sample is missing - It would look something like ProxyPass /path balancer://backend-cluster1. Therefore, to exclude a path, add:

ProxyPass /my/excluded/path !

before

ProxyPass /my balancer://backend-cluster1
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But the url to have access behind the proxyBalancer –  Mughil Jun 26 '13 at 13:32
    
Hi @Mughil, please rephrase your comment. Thanks –  Alastair McCormack Jun 26 '13 at 13:49
    
Thanks fuzzyfelt, I am asking how to exclude the url if we configured the proxy balancer. I have included the proxy configuration in the question –  Mughil Jun 26 '13 at 14:29
    
See updated answer. Add an exclusion before you define which path to proxypass. –  Alastair McCormack Jun 26 '13 at 15:03

You could put a rewrite above the proxy directives that will give users a 404 error when they try to access the url you want to exclude. You will need to enable rewrite_module.

<Location ~ ^/urltoblock($|/)>
   RewriteEngine On 
   RewriteRule .* - [L,R=404]
</Location>
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