P.S. I see a mention of "cluster" in the documentation for jvmRoute. Do
I need to configure a "cluster" perhaps?
-- Scott.
Scott Danforth wrote:
Mladen Turk wrote:
Scott Danforth wrote:
I'm trying to use jk1.2.20 mod_jk with Apache 1.3 for load balancing
two tomcat services and sticky sessions aren't working.
You don't have session affinity mark
For each instance add jvmRoute="tomcat1" or
jvmRoute="tomcat2 for a second instance. See:
http://tomcat.apache.org/tomcat-5.5-doc/config/engine.html
Thanks for your help. That sounds very reasonable, and I modifed the
two server.xml Engine elements as suggested, but it appears to make no
difference.
Below are 3 segments from mod_jk.log.
The first segment shows the initial request coming in without a
sessionid. The request is routed to tomcat1 with route=tomcat1.
The second segment shows the response coming back from tomcat1, with a
new session id.
The third segment shows the second request coming in with the expected
session id, and shows tomcat2 being selected with route=tomcat2.
You say I don't have session affinity mark. How would that show up in
the log? Is the "partial sessionid" an indication of the problem?
-- Scott.
[Fri Feb 23 09:08:53 2007] [6000:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (575): Attempting to map URI
'/servlets/Build' from 1 maps
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (587): Attempting to map
context URI '/servlets/*=loadbalancer' source 'JkMount'
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (602): Found a wildchar match
'/servlets/*=loadbalancer'
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
wc_get_worker_for_name::jk_worker.c (114): found a worker loadbalancer
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
wc_maintain::jk_worker.c (321): Maintaining worker loadbalancer
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
wc_get_name_for_type::jk_worker.c (290): Found worker type 'lb'
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
init_ws_service::mod_jk.c (561): Service protocol=HTTP/1.1 method=GET
host=(null) addr=192.168.1.50 name=build port=8008 auth=(null)
user=(null) laddr=192.168.1.7 raddr=192.168.1.50
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug] service::jk_lb_worker.c
(840): service sticky_session=1 id='empty'
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug]
get_most_suitable_worker::jk_lb_worker.c (785): found best worker
tomcat1 (tomcat1) using method 'Request'
[Fri Feb 23 09:34:59 2007] [6266:0000] [debug] service::jk_lb_worker.c
(860): service worker=tomcat1 route=tomcat1
...
[Fri Feb 23 09:35:00 2007] [6266:0000] [debug]
ajp_unmarshal_response::jk_ajp_common.c (603): status = 200
[Fri Feb 23 09:35:00 2007] [6266:0000] [debug]
ajp_unmarshal_response::jk_ajp_common.c (610): Number of headers is = 2
[Fri Feb 23 09:35:00 2007] [6266:0000] [debug]
ajp_unmarshal_response::jk_ajp_common.c (666): Header[0] [Set-Cookie]
= [JSESSIONID=9E36E3DC58A09ED9045B25F839E37A2C; Path=/]
[Fri Feb 23 09:35:00 2007] [6266:0000] [debug]
ajp_unmarshal_response::jk_ajp_common.c (666): Header[1]
[Content-Type] = [text/html;charset=ISO-8859-1]
[Fri Feb 23 09:35:00 2007] [6266:0000] [debug]
ajp_connection_tcp_get_message::jk_ajp_common.c (1029): received from
ajp13 pos=0 len=2309 max=8192
...
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (575): Attempting to map URI
'/servlets/Build' from 1 maps
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (587): Attempting to map
context URI '/servlets/*=loadbalancer' source 'JkMount'
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
map_uri_to_worker::jk_uri_worker_map.c (602): Found a wildchar match
'/servlets/*=loadbalancer'
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
wc_get_worker_for_name::jk_worker.c (114): found a worker loadbalancer
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
wc_get_name_for_type::jk_worker.c (290): Found worker type 'lb'
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
init_ws_service::mod_jk.c (561): Service protocol=HTTP/1.1 method=POST
host=(null) addr=192.168.1.50 name=build port=8008 auth=(null)
user=(null) laddr=192.168.1.7 raddr=192.168.1.50
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug] service::jk_lb_worker.c
(840): service sticky_session=1 id='9E36E3DC58A09ED9045B25F839E37A2C'
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
get_most_suitable_worker::jk_lb_worker.c (733): searching worker for
partial sessionid 9E36E3DC58A09ED9045B25F839E37A2C
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug]
get_most_suitable_worker::jk_lb_worker.c (785): found best worker
tomcat2 (tomcat2) using method 'Request'
[Fri Feb 23 09:35:10 2007] [6266:0000] [debug] service::jk_lb_worker.c
(860): service worker=tomcat2 route=tomcat2
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--
Scott Danforth, Ph.D.
Director of Technology
ePath Learning, Inc.
70 Howard Street, Suite C
New London, CT 06320
Phone: (860) 444-6989 ext. 3
Fax: (215) 243-7454
email: [EMAIL PROTECTED]
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