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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 38357] - mod_proxy_balancer doesn't support sticky session
Date Fri, 14 Apr 2006 10:30:17 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=38357





------- Additional Comments From francois.jeanmougin@indexmultimedia.com  2006-04-14 10:30
-------
I ran into about the same problem on my configuration. After applying the patch
http://svn.apache.org/viewcvs.cgi/httpd/httpd/trunk/modules/proxy/mod_proxy_balancer.c?rev=352010&view=diff&r1=352010&r2=352009&p1=httpd/httpd/trunk/modules/proxy/mod_proxy_balancer.c&p2=/httpd/httpd/trunk/modules/proxy/mod_proxy_balancer.c
, the balancer does not find any route so nothing is sticky.

[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(198): proxy: BALANCER:
Found value 5C16625C0C45A7EF33487CCC19016A3
4 for stickysession jsessionid
[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(803): proxy: Entering
byrequests for BALANCER (balancer://badmobil
e)
[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(396): proxy: BALANCER
(balancer://badmobile) worker (ajp://10.0.15
.196:8538) rewritten to
ajp://10.0.15.196:8538/portail/thumbs;jsessionid=5C16625C0C45A7EF33487CCC19016A34?rsi=1906&code=60
294&&P=25
[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(198): proxy: BALANCER:
Found value 5C16625C0C45A7EF33487CCC19016A3
4 for stickysession jsessionid
[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(803): proxy: Entering
byrequests for BALANCER (balancer://badmobil
e)
[Fri Apr 14 11:58:17 2006] [debug] mod_proxy_balancer.c(396): proxy: BALANCER
(balancer://badmobile) worker (ajp://10.0.15
.197:8538) rewritten to
ajp://10.0.15.197:8538/portail/thumbs;jsessionid=5C16625C0C45A7EF33487CCC19016A34?rsi=1906&code=67
283&&P=25

As you can see, the requests are sent to 2 different real workers. There is no
route in the session. By the way, I didn't find where in the response you add
the route to the session ID. 

I would love to be able to use proxy_balancer instead of LVS, but at least
stickysession should work or an affinity mechanism should be implemented.

Opened to any extensive tests,

François.



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