Hi List, I have configured Apache 2.2.11 (worker mpm) with mod_jk 1.2.27 and two nodes of Tomcat 6.0.20
My mod_jk configuration only has the following settings (apart from the port and IP address settings ofcourse): worker.tcnodo-11.socket_keepalive=true worker.tcnodo-11.connection_pool_timeout=600 worker.tcnodo-12.socket_keepalive=true worker.tcnodo-12.connection_pool_timeout=600 Inside the AJP connector tag of both Tomcats I have configure connectionTimeout to 600000. Now, my application works fine and seems to handle correctly failover of failed nodes. However, there are a series of errors and warnings printed in the mod_jk.log which worry me. I was wondering if somebody could explain what they actually mean and what is happening. I noticed that although connection failed to a node, it keeps trying sending requests to that node over and over. Although, my web application never returns an error (thus it seems its balancing correctly to the working node), I'm worried about this behavior as it might introduce latency. [Wed Sep 30 11:31:21.339 2009] [4681:1183201600] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [Wed Sep 30 11:31:21.339 2009] [4681:1183201600] [error] ajp_service::jk_ajp_common.c (2426): (tcnodo11-6eka) connecting to tomcat failed. [Wed Sep 30 11:31:21.339 2009] [4681:1183201600] [info] service::jk_lb_worker.c (1347): service failed, worker tcnodo11-6eka is in error state [Wed Sep 30 11:31:57.244 2009] [4680:1357449536] [info] ajp_send_request::jk_ajp_common.c (1456): (tcnodo12-6eka) all endpoints are disconnected, detected by connect check (1), cping (0), send (0) [Wed Sep 30 11:33:21.572 2009] [4769:1297041728] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:33:21.572 2009] [4769:1297041728] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:33:21.572 2009] [4769:1297041728] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:33:21.572 2009] [4769:1297041728] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1) [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [error] ajp_service::jk_ajp_common.c (2426): (tcnodo11-6eka) connecting to tomcat failed. [Wed Sep 30 11:33:21.673 2009] [4769:1297041728] [info] service::jk_lb_worker.c (1347): service failed, worker tcnodo11-6eka is in error state [Wed Sep 30 11:35:24.556 2009] [4769:1255082304] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:35:24.556 2009] [4769:1255082304] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:35:24.556 2009] [4769:1255082304] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:35:24.556 2009] [4769:1255082304] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1) [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [error] ajp_service::jk_ajp_common.c (2426): (tcnodo11-6eka) connecting to tomcat failed. [Wed Sep 30 11:35:24.657 2009] [4769:1255082304] [info] service::jk_lb_worker.c (1347): service failed, worker tcnodo11-6eka is in error state [Wed Sep 30 11:36:31.134 2009] [4769:1359980864] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:36:31.134 2009] [4769:1359980864] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:36:31.134 2009] [4769:1359980864] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:36:31.134 2009] [4769:1359980864] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1) [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [info] jk_open_socket::jk_connect.c (593): connect to 10.189.x.x:8009 failed (errno=111) [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (10.189.x.x:8009) (errno=111) [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [error] ajp_send_request::jk_ajp_common.c (1467): (tcnodo11-6eka) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [info] ajp_service::jk_ajp_common.c (2407): (tcnodo11-6eka) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [error] ajp_service::jk_ajp_common.c (2426): (tcnodo11-6eka) connecting to tomcat failed. [Wed Sep 30 11:36:31.234 2009] [4769:1359980864] [info] service::jk_lb_worker.c (1347): service failed, worker tcnodo11-6eka is in error state
