System:
Debian "testing" i386
jdk1.5.0
Tomcat 5.0.28 - CATALINA_OPTS -ms64m -mx128m
Apache 2.0.52-1
libapache-mod-jk2 2.0.4-3
MySQL 4.0.21-7
mysql-connector-java-3.0.15-ga
Tomcat is running a service called Tomcat-Apache, an engine called
Apache with
a host called localhost. localhost has the /admin and /manager webapps
and my webapp, /mediaport, using precompiled jsp pages and Servlets, and a
connection pool to MySQL.
Configurations:
Apache configuration is default debian config
server.xml service definition:
<Service name="Tomcat-Apache">
<Connector
port="8009"
debug="0"
protocol="AJP/1.3" />
<Engine name="Apache" defaultHost="localhost" debug="0">
<Realm
className="
org.apache.catalina.realm.MemoryRealm"
pathname="conf/tomcat-users.xml"/>
<Logger
className="
org.apache.catalina.logger.FileLogger"
prefix="apache."
suffix=".log"
timestamp="true"/>
<Host
name="localhost"
debug="0"
appBase="webapps"
unpackWARs="true"
autoDeploy="false"
deployOnStartup="true"
xmlValidation="true"
xmlNamespaceAware="true">
<Logger
className="
org.apache.catalina.logger.FileLogger"
prefix="localhost."
suffix=".log"
timestamp="true"/>
</Host>
</Engine>
</Service>
workers2.properties:
[logger]
info=Native logger
level=ERROR
[config:]
file=${serverRoot}/conf/workers2.properties
debug=0
debugEnv=0
[uriMap:]
info=Maps the requests.
debug=0
[shm:]
info=Scoreboard. Required for reconfiguration and status with
multiprocess servers
file=anonymous
debug=0
[workerEnv:]
info=Global server options
timing=0
debug=0
[lb:lb]
info=Default load balancer.
debug=0
[channel.socket:localhost:8009]
info=Ajp13 forwarding over socket
debug=0
tomcatId=localhost:8009
[status:]
[uri:/jkstatus]
group=status:
[uri:/admin/*]
info=Tomcat HTML based administration web application.
debug=0
[uri:/manager/*]
info=A scriptable management web application for the Tomcat Web Server.
debug=0
[uri:/mediaport/*.jsp]
[uri:/mediaport/servlet/*]
Here are my problems
1. Strange log message
This message shows up frequently in error.log:
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() ajpGetReply
recoverable error 3
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() ajpGetReply
recoverable error 3
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:40 2004] [error] mod_jk2.handler() Error connecting to
tomcat 3, status 200
2. Serious stability problem
Sometimes tomcat "stops" and gives a 500 error. This seems to happen at
times
when load is high, but happens every once in a while when load is low as
well.
A restart of Tomcat does the work. This results in having to restart
tomcat at
least 2-3 times a day.
This is what show up in the logs
catalina.out:
19.okt.2004 17:14:43
org.apache.coyote.tomcat5.CoyoteConnector pause
SEVERE: Protocol handler pause failed
java.net.ConnectException: Connection refused
at
java.net.PlainSocketImpl.socketConnect(Native Method)
at
java.net.PlainSocketImpl.doConnect (
PlainSocketImpl.java:333)
at
java.net.PlainSocketImpl.connectToAddress (
PlainSocketImpl.java:195)
at
java.net.PlainSocketImpl.connect (
PlainSocketImpl.java:182)
at
java.net.SocksSocketImpl.connect (
SocksSocketImpl.java:364)
at
java.net.Socket.connect (
Socket.java:507)
at
java.net.Socket.connect (
Socket.java:457)
at java.net.Socket.<init>(Socket.java:365)
at java.net.Socket.<init>(Socket.java:207)
at
org.apache.jk.common.ChannelSocket.unLockSocket (
ChannelSocket.java:460)
at
org.apache.jk.common.ChannelSocket.pause (
ChannelSocket.java:272)
at
org.apache.jk.server.JkMain.pause (
JkMain.java:657)
at
org.apache.jk.server.JkCoyoteHandler.pause (
JkCoyoteHandler.java:202)
at
org.apache.coyote.tomcat5.CoyoteConnector.pause (
CoyoteConnector.java:1444)
at
org.apache.catalina.core.StandardService.stop (
StandardService.java:521)
at
org.apache.catalina.core.StandardServer.stop (
StandardServer.java:2347)
at
org.apache.catalina.startup.Catalina.stop (
Catalina.java:605)
at
org.apache.catalina.startup.Catalina.start (
Catalina.java:580)
at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke (
NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke (
DelegatingMethodAccessorImpl.java:25)
at
java.lang.reflect.Method.invoke (
Method.java:585)
at
org.apache.catalina.startup.Bootstrap.start (
Bootstrap.java:287)
at
org.apache.catalina.startup.Bootstrap.main (
Bootstrap.java:425)
19.okt.2004 17:14:44
org.apache.catalina.core.StandardService stop
INFO: Stopping service Tomcat-Apache
19.okt.2004 17:14:44
org.apache.catalina.core.StandardHostDeployer remove
INFO: Removing web application at context path /admin
19.okt.2004 17:14:44
org.apache.catalina.logger.LoggerBase stop
INFO: unregistering logger Apache:type=Logger,path=/admin,host=localhost
19.okt.2004 17:14:44
org.apache.catalina.core.StandardHostDeployer remove
INFO: Removing web application at context path /mediaport
19.okt.2004 17:14:44
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 19 instance(s) to be deallocated
19.okt.2004 17:14:45
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 19 instance(s) to be deallocated
19.okt.2004 17:14:46
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 19 instance(s) to be deallocated
19.okt.2004 17:14:46
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 1 instance(s) to be deallocated
19.okt.2004 17:14:48
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 1 instance(s) to be deallocated
19.okt.2004 17:14:49
org.apache.catalina.core.StandardWrapper unload
INFO: Waiting for 1 instance(s) to be deallocated
19.okt.2004 17:14:49
org.apache.catalina.core.StandardHostDeployer remove
INFO: Removing web application at context path /manager
19.okt.2004 17:14:49
org.apache.catalina.logger.LoggerBase stop
INFO: unregistering logger Apache:type=Logger,host=localhost
19.okt.2004 17:14:49
org.apache.catalina.logger.LoggerBase stop
INFO: unregistering logger Apache:type=Logger
error.log:
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() ajpGetReply
recoverable error 3
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() ajpGetReply
recoverable error 3
[Tue Oct 19 17:14:40 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:40 2004] [error] mod_jk2.handler() Error connecting to
tomcat 3, status 200
[Tue Oct 19 17:14:44 2004] [error] ajp13.service() ajpGetReply
recoverable error 3
[Tue Oct 19 17:14:44 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:44 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:44 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:44 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:44 2004] [error] lb.service() worker failed 120000 for
ajp13:localhost:8009
[Tue Oct 19 17:14:44 2004] [error] lb_worker.service() all workers in
error or disabled state
[Tue Oct 19 17:14:44 2004] [error] mod_jk2.handler() Error connecting to
tomcat 120000, status 503
[Tue Oct 19 17:14:44 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:44 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:44 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:45 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:45 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:45 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:45 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:45 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:45 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:45 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:45 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:45 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:45 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:45 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:45 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:46 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:46 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:46 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:46 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:46 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:46 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:46 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:46 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:46 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:46 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:46 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:46 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:46 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:46 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:46 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:47 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:47 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:47 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:48 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:48 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:48 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:48 2004] [error] channelApr.receive(): Error receiving
message body -1 11
[Tue Oct 19 17:14:48 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:48 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.open() attempt to connect
to 127.0.0.1:8009 (localhost) failed 111
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] msgAjp.receive(): Bad signature 00
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:49 2004] [error] msgAjp.receive(): Bad signature 00
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] lb.service() worker failed 120000 for
ajp13:localhost:8009
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Error receiving
message body -1 104
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:49 2004] [error] lb.service() worker failed 120000 for
ajp13:localhost:8009
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] lb_worker.service() all workers in
error or disabled state
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 0
[Tue Oct 19 17:14:49 2004] [error] lb.service() worker failed 120000 for
ajp13:localhost:8009
[Tue Oct 19 17:14:49 2004] [error] lb_worker.service() all workers in
error or disabled state
[Tue Oct 19 17:14:49 2004] [error] mod_jk2.handler() Error connecting to
tomcat 120000, status 503
[Tue Oct 19 17:14:49 2004] [error] channelApr.receive(): Bad header
[Tue Oct 19 17:14:49 2004] [error] workerEnv.processCallbacks() Error
reading reply
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() ajpGetReply
recoverable error 120000
[Tue Oct 19 17:14:49 2004] [error] channelApr.open() attempt to connect
to 127.0.0.1:8009 (localhost) failed 111
[Tue Oct 19 17:14:49 2004] [error] ajp13.connect() failed
ajp13:localhost:8009
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() failed to connect
endpoint errno=9 Bad file descriptor
[Tue Oct 19 17:14:49 2004] [error] ajp13.service() Error forwarding
ajp13:localhost:8009 1 1
[Tue Oct 19 17:14:49 2004] [error] lb.service() worker failed 120000 for
ajp13:localhost:8009
[Tue Oct 19 17:14:49 2004] [error] lb_worker.service() all workers in
error or disabled state
[Tue Oct 19 17:14:49 2004] [error] mod_jk2.handler() Error connecting to
tomcat 120000, status 503
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