Dear listmember,
Ive searched the docs and the web and couldnt find an answer to the
following:
The setup is like 2 apaches are connecting to 2 tomcats crosswise,
apache1 to tomcat1/tomcat2 and
apache2 to tomcat1/tomcat2 by using
workers.java_home=/usr/bin/java
ps=/
worker.list=lb,jkstatus
worker.lb.type=lb
worker.lb.sticky_session=true
worker.jkstatus.type=status
worker.tomcatlb1.type=ajp13
worker.tomcatlb1.host=172.26.19.16
worker.tomcatlb1.port=8009
worker.tomcatlb1.lbfactor=10
worker.tomcatlb1.socket_timeout=120
worker.tomcatlb1.connection_pool_size=50
worker.tomcatlb1.type=ajp13
worker.tomcatlb2.type=ajp13
worker.tomcatlb2.host=172.26.19.17
worker.tomcatlb2.port=8009
worker.tomcatlb2.lbfactor=10
worker.tomcatlb2.socket_timeout=120
worker.tomcatlb2.connection_pool_size=50
worker.lb.balance_workers=tomcatlb1,tomcatlb2
which is working so far. Sticky connection is absolutely neccessary due
to application "design".
(not able to take any influence here)
This setup exists twice. One environment keeps directing the user within
one session to one tomcat like it
should, the other one does not.
Looking at mod_jk debug output at the not working one, I can see, that
for every request mod_jk generates
a new session id:
[Thu Oct 12 09:59:11 2006] [11822:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (514): total sessionid is
DA9D99BE9ECB77C69A3B799FC122F670
[Thu Oct 12 09:59:11 2006] [11822:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (524): searching worker for partial
sessionid DA9D99BE9ECB77C69A3B799FC122F670
[Thu Oct 12 09:59:11 2006] [11822:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (564): found best worker (tomcatlb1)
using by request method
[Thu Oct 12 09:59:15 2006] [11820:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (514): total sessionid is
DFAFEE609A2DFEF179D5D6B1CCF030A3
[Thu Oct 12 09:59:15 2006] [11820:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (524): searching worker for partial
sessionid DFAFEE609A2DFEF179D5D6B1CCF030A3
[Thu Oct 12 09:59:15 2006] [11820:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (564): found best worker (tomcatlb2)
using by request method
These are simple reloads within one session.
I noticed one more thing:
This is debug output from the working environment:
[Thu Oct 12 10:11:50 2006] [0517:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (514): total sessionid is
0EC77EB2BBA412F4C40F6033B9AD16C4.tomcatlb1
[Thu Oct 12 10:11:50 2006] [0517:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (524): searching worker for partial
sessionid 0EC77EB2BBA412F4C40F6033B9AD16C4.tomcatlb1
[Thu Oct 12 10:11:50 2006] [0517:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (532): searching worker for session
route tomcatlb1
[Thu Oct 12 10:11:50 2006] [0517:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (541): found worker tomcatlb1 for
route tomcatlb1 and partial sessionid 0EC77EB2BBA412F4C40F6033B9AD16C4.tomcatlb1
This from the not working one:
[Thu Oct 12 10:16:26 2006] [12189:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (514): total sessionid is
ADE09C3AD588F82F34E0B7C23E5F01D7
[Thu Oct 12 10:16:26 2006] [12189:42688] [debug]
get_most_suitable_worker::jk_lb_worker.c (524): searching worker for partial
sessionid ADE09C3AD588F82F34E0B7C23E5F01D7
Note the difference in the generated session ids:
DFAFEE609A2DFEF179D5D6B1CCF030A3
vs.
0EC77EB2BBA412F4C40F6033B9AD16C4.tomcatlb1
ie. on the not working environment theres the ".<worker>" missing.
But why? The two environments are identical in terms of tomcat/mod_jk
version.
Thanks alot in advance!!
Regards,
Daniel
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