最近几天服务总是莫名其妙的变得很慢，或者干脆连接不上服务器，查询发现如下错误：
下面两个是apache的error.log报的错误
下面是mod_jk.log里面的错误：
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] jk_open_socket::jk_connect.c (627): connect to 172.16.2.5:8009 failed (errno=61)
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] ajp_connect_to_endpoint::jk_ajp_common.c (995): Failed opening socket to (172.16.2.5:8009) (errno=61)
[Sat Feb 28 09:29:52 2015][1033140:1157808] [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=61)
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] ajp_service::jk_ajp_common.c (2623): (node1) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1)
[Sat Feb 28 09:29:52 2015][1033140:1157808] [error] ajp_service::jk_ajp_common.c (2643): (node1) connecting to tomcat failed.
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] service::jk_lb_worker.c (1478): service failed, worker node1 is in error state
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] service::jk_lb_worker.c (1558): All tomcat instances are busy or in error state
[Sat Feb 28 09:29:52 2015][1033140:1157808] [error] service::jk_lb_worker.c (1563): All tomcat instances failed, no more workers left
[Sat Feb 28 09:29:52 2015][1033140:1157808] [info] jk_handler::mod_jk.c (2788): Service error=0 for worker=loadbalancer
网上查了查，没查到报错原因的，大牛们对apache比较熟悉的帮忙解释一下原因，还有是因为Jboss导致apache挂掉还是apache挂掉导致服务崩溃的？
