我使用Apache/mod_jk module来连接jboss.但是经过一段时间后,出了点问题.

Apache：2.2.22
mod_jk：1.2.37
Jboss：5.1.0 GA(集群环境)
操作系统：CentOS 5.2 x86_64
JDK：1.6.0_30-b12

这是mod_jk.log的一部分

[Thu Oct 18 15:21:35.044 2012] [26272:47208100643936] [error] ajp_connect_to_endpoint::jk_ajp_common.c (1035): (node1) cping/cpong after connecting to the backend server failed (errno=110)
[Thu Oct 18 15:21:35.044 2012] [26272:47208100643936] [error] ajp_send_request::jk_ajp_common.c (1630): (node1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=110)
[Thu Oct 18 15:22:35.643 2012] [26272:47208100643936] [error] ajp_connect_to_endpoint::jk_ajp_common.c (1035): (node1) cping/cpong after connecting to the backend server failed (errno=110)
[Thu Oct 18 15:22:35.643 2012] [26272:47208100643936] [error] ajp_send_request::jk_ajp_common.c (1630): (node1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=110)
[Thu Oct 18 15:22:35.643 2012] [26272:47208100643936] [error] ajp_service::jk_ajp_common.c (2626): (node1) connecting to tomcat failed.
[Thu Oct 18 15:23:36.143 2012] [26272:47208100643936] [error] ajp_connect_to_endpoint::jk_ajp_common.c (1035): (node2) cping/cpong after connecting to the backend server failed (errno=110)
[Thu Oct 18 15:23:36.143 2012] [26272:47208100643936] [error] ajp_send_request::jk_ajp_common.c (1630): (node2) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=110)
[Thu Oct 18 15:24:36.742 2012] [26272:47208100643936] [error] ajp_connect_to_endpoint::jk_ajp_common.c (1035): (node2) cping/cpong after connecting to the backend server failed (errno=110)
[Thu Oct 18 15:24:36.742 2012] [26272:47208100643936] [error] ajp_send_request::jk_ajp_common.c (1630): (node2) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=110)
[Thu Oct 18 15:24:36.742 2012] [26272:47208100643936] [error] ajp_service::jk_ajp_common.c (2626): (node2) connecting to tomcat failed.
[Thu Oct 18 15:24:36.742 2012] [26272:47208100643936] [error] service::jk_lb_worker.c (1485): All tomcat instances failed, no more workers left

http.conf的一部分：

JkWorkersFile conf/workers.properties
JkMountFile conf/uriworkermap.properties
JkLogFile logs/mod_jk.log
JkLogLevel warn

workers.properties：

 worker.list=loadbalancer,loadbalancer_2,status
 worker.node1.port=8009
 worker.node1.host=10.123.76.6
 worker.node1.type=ajp13
 worker.node1.lbfactor=1

 worker.node2.port=8009
 worker.node2.host=10.123.76.4
 worker.node2.type=ajp13
 worker.node2.lbfactor=1

 worker.loadbalancer.type=lb
 worker.loadbalancer.balance_workers=node1,node2

 worker.loadbalancer.sticky_session=true
 worker.loadbalancer.sticky_session_force=false

 worker.loadbalancer_2.type=lb
 worker.loadbalancer_2.balance_workers=node1,node2
 worker.loadbalancer_2.sticky_session=true
 worker.loadbalancer_2.sticky_session_force=false

注意：Jboss工作正常. telnet jboss 8009是正常的.如果你重新启动jboss,它会再次运行.但是,如果你重启apache,它没有帮助.

有人遇到过这个问题吗？

解决方法:

我认为为ajp连接器设置连接超时会解决您的问题.
这样的设置应该有效

<Connector port="8009" address="${jboss.bind.address}" protocol="AJP/1.3"
         emptySessionPath="true" enableLookups="false" redirectPort="8443" maxThreads="1000" connectionTimeout="60000000" />

你在server.xml中配置它

有关此属性的更多文档,您可以在官方文档http://docs.jboss.org/jbossweb/latest/config/ajp.html中阅读