Hi - Running a Single Apache Web Server (1.3.36) to 2 Tomcat App Servers (5.5.17) via mod_jk (1.2.19) on Unix Solaris. Apache Tomcat Connector setup for loadbalance which it does just fine. Issue is that when 1 Tomcat goes into error state the cluster becomes unavailable. Apache sees the 1 Tomcat in error state but does not seem to be able to ignore it and send traffic to the healthy tomcat. Enclosed is log entry from mod_jk showing that Apache knows about the error state. I see lots of these:
[Fri Oct 03 18:40:02 2008] [24045:0001] [error] ajp_service::jk_ajp_common.c (1879): (cbap1) Connecting to tomcat failed. Tomcat is probably not started or is listening on the wrong port [Fri Oct 03 18:40:02 2008] [24045:0001] [info] service::jk_lb_worker.c (906): service failed, worker cbap1 is in error state [Fri Oct 03 18:42:17 2008] [20789:0001] [info] jk_open_socket::jk_connect.c (450): connect to IP REMOVED failed with errno=145 [Fri Oct 03 18:42:17 2008] [20789:0001] [info] ajp_connect_to_endpoint::jk_ajp_common.c (872): Failed opening socket to (IP REMOVED) with (errno=145) [Fri Oct 03 18:42:17 2008] [20789:0001] [info] ajp_send_request::jk_ajp_common.c (1247): (cbap1) error connecting to the backend server (errno=145) [Fri Oct 03 18:42:17 2008] [20789:0001] [info] ajp_service::jk_ajp_common.c (1867): (cbap1) sending request to tomcat failed, recoverable operation attempt=2 [Fri Oct 03 18:42:17 2008] [20789:0001] [error] ajp_service::jk_ajp_common.c (1879): (cbap1) Connecting to tomcat failed. Tomcat is probably not started or is listening on the wrong port [Fri Oct 03 18:42:17 2008] [20789:0001] [info] service::jk_lb_worker.c (906): service failed, worker cbap1 is in error state [Fri Oct 03 18:42:47 2008] [24046:0001] [info] jk_open_socket::jk_connect.c (450): connect to IP REMOVED failed with errno=145 [Fri Oct 03 18:42:47 2008] [24046:0001] [info] ajp_connect_to_endpoint::jk_ajp_common.c (872): Failed opening socket to (IP REMOVED) with (errno=145) [Fri Oct 03 18:42:47 2008] [24046:0001] [info] ajp_send_request::jk_ajp_common.c (1247): (cbap1) error connecting to the backend server (errno=145) [Fri Oct 03 18:42:47 2008] [24046:0001] [info] ajp_service::jk_ajp_common.c (1867): (cbap1) sending request to tomcat failed, recoverable operation attempt=2 [Fri Oct 03 18:42:47 2008] [24046:0001] [error] ajp_service::jk_ajp_common.c (1879): (cbap1) Connecting to tomcat failed. Tomcat is probably not started or is listening on the wrong port [Fri Oct 03 18:42:47 2008] [24046:0001] [info] service::jk_lb_worker.c (906): service failed, worker cbap1 is in error state [Fri Oct 03 18:45:36 2008] [21777:0001] [info] jk_open_socket::jk_connect.c (450): connect to IP REMOVED failed with errno=145 [Fri Oct 03 18:45:36 2008] [21777:0001] [info] ajp_connect_to_endpoint::jk_ajp_common.c (872): Failed opening socket to (IP REMOVED) with (errno=145) [Fri Oct 03 18:45:36 2008] [21777:0001] [info] ajp_send_request::jk_ajp_common.c (1247): (cbap1) error connecting to the backend server (errno=145) If we shutdown the cbap1 which is in error then Apache is able to serve pages again using the other Tomcat app server. Note that cbap1 was in bad state and needed to be killed as it would not shutdown normally. (We are investigating as separate issue, but would like to pursue this issue as to make cluster more resilient.) My workers.properties is configured with a bare minimum of options. worker.list=loadbalancer worker.loadbalancer.type=lb worker.loadbalancer.balance_workers=cbap1,cbap2 worker.loadbalancer.sticky_session=1 worker.cbap1.port=8690 worker.cbap1.host= edited for privacy worker.cbap1.type=ajp13 worker.cbap1.lbfactor=10 worker.cbap1.socket_keepalive=1 # worker.cbap1.cachesize=5 worker.cbap2.port=8690 worker.cbap2.host=edited for privacy worker.cbap2.type=ajp13 worker.cbap2.lbfactor=10 worker.cbap2.socket_keepalive=1 # worker.cbap2.cachesize=5 I am looking for suggestion as to other configuration properties which should be added to help with error handling of the worker in error state. Or other points to review welcome. THANK YOU for any help here. Rgds, Hunter. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
