We use Apache Http Server as web server, which load-balances two Jboss servers. Assumed worker1 is responsed to Jboss1 and worker2 to Jboss2.
Assumed a request comes and a session with ID is created and assumed it goes to Jboss1. Normally this session will keep so long by Jboss1 till the session is ended by user (such as the program goes to end-state of spring-web-flow) or timeout comes. Now I have a strange problem. Sometimes (not often) during using the program, I get exception that the session is gone. As I looked into the mod_jk.log I found following message: [code] ... [Mon Dec 07 11:42:17 2009] [13193:2537062720] [error] ajp_get_reply::jk_ajp_common.c (1962): (icf1) Tomcat is down or refused connection. No response has been sent to the client (yet) [Mon Dec 07 11:42:17 2009] [13193:2537062720] [error] ajp_service::jk_ajp_common.c (2440): (icf1) sending request to tomcat failed (unrecoverable), (attempt=1) [Mon Dec 07 11:42:17 2009] [13193:2537062720] [info] service::jk_lb_worker.c (1384): service failed, worker icf1 is in error state [Mon Dec 07 11:42:17 2009] [13193:2537062720] [error] service::jk_lb_worker.c (1409): unrecoverable error 502, request failed. Tomcat failed in the middle of request, we can't recover to another instance. [Mon Dec 07 11:42:17 2009] [13193:2537062720] [error] service::jk_lb_worker.c (1469): All tomcat instances failed, no more workers left ... [/code] And as I looked into the log of Jboss2, I can find the session-ID which should be found in log of Jboss1. I've checked all the Jboss servers are running. Here is my workers.properties: [code] ... worker.template.connection_pool_timeout=300 worker.template.socket_keepalive=True worker.template.lbfactor=1 worker.template.type=ajp13 worker.template.ping_timeout=10000 worker.template.ping_mode=A worker.template.retries=2 worker.template.activation=A worker.template.recovery_options=7 ################################### # 4.1 Set properties for worker_monther. If you have more than one worker_son, just separate them with ','. # And you have to set the properties similar to 3.1.1. ################################### #Load balancer for appl-icf.proactiv.de worker.worker1.balance_workers=icf1,icf2 worker.worker1.sticky_session=True worker.worker1.type=lb worker.worker1.error_escalation_time=0 ################################### # 4.1.1 Set the properties for worker_son. ################################### worker.icf1.reference=worker.template worker.icf1.port=8009 worker.icf1.host=appl1-icf.mycompany.com worker.icf2.reference=worker.template worker.icf2.port=8009 worker.icf2.host=appl2-icf.myomcpany.com ... [/code] I think my workers.properties is OK.I can't image why sometimes the mod_jk tells the all the Tomcat/Jboss instanz failed though they are running. -- View this message in context: http://old.nabble.com/A-question-about-session-id-problem-tp26694818p26694818.html Sent from the Apache HTTP Server - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org " from the digest: users-digest-unsubscr...@httpd.apache.org For additional commands, e-mail: users-h...@httpd.apache.org
