Hi
I have a three machine Tomcat cluster with one tomcat instance on
each. Machine names are "pathsrv1", "raid2b" and "reptile". The OS
is OSX 10.5 on two machines and OSX 10.4.11 on one machine. The JVM
is the latest for the particular OS. "pathsrv1" act as a reverse
proxy for all three machines. I am getting the error bellow in all
three machines onto the catalina.out.
<snip>
Feb 8, 2009 7:02:19 PM
org.apache.catalina.ha.context.ReplicatedContext start
SEVERE: Unable to start ReplicatedContext
java.lang.NullPointerException
at java.io.File.<init>(File.java:194)
at
org
.apache.catalina.core.StandardContext.getBasePath(StandardContext.java:
4784)
at
org
.apache
.catalina.ha.context.ReplicatedContext.start(ReplicatedContext.java:62)
at
org
.apache
.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:
525)
at
org
.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:
627)
at
org
.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
553)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:
488)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
311)
at
org
.apache
.catalina
.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:
443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:
710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
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:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Feb 8, 2009 7:02:19 PM org.apache.catalina.core.ContainerBase
addChildInternal
SEVERE: ContainerBase.addChild: start:
LifecycleException: Failed to start ReplicatedContext:
java.lang.NullPointerException
at
org
.apache
.catalina.ha.context.ReplicatedContext.start(ReplicatedContext.java:73)
at
org
.apache
.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:
525)
at
org
.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:
627)
at
org
.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
553)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:
488)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
311)
at
org
.apache
.catalina
.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:
443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:
710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
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:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Feb 8, 2009 7:02:19 PM org.apache.catalina.startup.HostConfig
deployDescriptor
SEVERE: Error deploying configuration descriptor CassetteLabeler.xml
java.lang.IllegalStateException: ContainerBase.addChild: start:
LifecycleException: Failed to start ReplicatedContext:
java.lang.NullPointerException
at
org
.apache
.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:795)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:
525)
at
org
.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:
627)
at
org
.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:
553)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:
488)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
311)
at
org
.apache
.catalina
.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:
443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:
710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
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:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
</snip>
The replicatedContext is in the webapp's META-INF/context.xml:
pathsrv1:META-INF administrator$ cat context.xml
<?xml version="1.0" encoding="UTF-8"?>
<Context path="" docBase="ROOT"
className="org.apache.catalina.ha.context.ReplicatedContext">
</Context>
Any good idea what did I misconfigured ?
The server.xml is the standard one, with only the following
modifications
<snip>
<Engine name="Catalina" defaultHost="localhost"
jvmRoute="pathsrv1">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<Cluster
className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
</snip>
of course the jvmRoute is different in all three machines. So I use
the default settings as much as I could.
I am getting these into the mod_jk.log of "pathsrv1":
[Sun Feb 08 16:42:11 2009] [41658:0000] [info]
ajp_send_request::jk_ajp_common.c (1215): (raid2b) error sending
request. Will try another pooled connection
[Sun Feb 08 16:42:11 2009] [41658:0000] [info]
ajp_send_request::jk_ajp_common.c (1241): (raid2b) all endpoints are
disconnected
[Sun Feb 08 16:42:11 2009] [41658:0000] [info]
ajp_send_request::jk_ajp_common.c (1244): (raid2b) increase the
backend idle connection timeout or the connection_pool_minsize
[Sun Feb 08 16:42:11 2009] [41658:0000] [info]
ajp_service::jk_ajp_common.c (1941): (raid2b) sending request to
tomcat failed, recoverable operation attempt=1
[Sun Feb 08 16:50:01 2009] [43073:0000] [info]
ajp_send_request::jk_ajp_common.c (1215): (reptile) error sending
request. Will try another pooled connection
[Sun Feb 08 16:50:01 2009] [43073:0000] [info]
ajp_send_request::jk_ajp_common.c (1241): (reptile) all endpoints are
disconnected
[Sun Feb 08 16:50:01 2009] [43073:0000] [info]
ajp_send_request::jk_ajp_common.c (1244): (reptile) increase the
backend idle connection timeout or the connection_pool_minsize
[Sun Feb 08 16:50:01 2009] [43073:0000] [info]
ajp_service::jk_ajp_common.c (1941): (reptile) sending request to
tomcat failed, recoverable operation attempt=1
The workers.properties are:
pathsrv1:apache2 administrator$ cat workers.properties
ps=/
worker.list=loadbalancer, jkstatus
worker.jkstatus.type=status
# ------------------------
# First Tomcat server named pathsrv1
# ------------------------
worker.pathsrv1.type=ajp13
worker.pathsrv1.host=localhost
worker.pathsrv1.port=8009
worker.pathsrv1.lbfactor=10
worker.pathsrv1.redirect=reptile
worker.pathsrv1.sticky_session=True
worker.pathsrv1.sticky_session_force=False
# ------------------------
# Second Tomcat server named reptile
# ------------------------
worker.reptile.type=ajp13
worker.reptile.host=reptile.yalepath.org
worker.reptile.port=8009
worker.reptile.lbfactor=10
worker.reptile.redirect=raid2b
worker.reptile.sticky_session=True
worker.reptile.sticky_session_force=False
# ---------------------------
# Third Tomcat server named raid2b
# ---------------------------
worker.raid2b.type=ajp13
worker.raid2b.host=raid2b.yalepath.org
worker.raid2b.port=8009
worker.raid2b.lbfactor=10
worker.raid2b.redirect=pathsrv1
worker.raid2b.sticky_session=True
worker.raid2b.sticky_session_force=False
# ------------------------
# Load Balancer worker
# ------------------------
#
# The loadbalancer (type lb) worker performs weighted round-robin
# load balancing with sticky sessions.
# Note:
# ----> If a worker dies, the load balancer will check its state
# once in a while. Until then all work is redirected to peer
# worker.
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=pathsrv1, reptile, raid2b
of course it is slightly changed for the other two machines.
Interestingly if I am ps-ing for java on the machines:
this is on pathsrv1:
pathsrv1:apache2 administrator$ ps -avx |grep java
41068 S 1:08.05 0 0 0 477616 69040 - 0
0.0 1.6 /System/Library/Frameworks/JavaVM.framework/Versions/
CurrentJDK/Home/bin/java -
Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -
Djava.util.logging.config.file=/Library/Tomcat/conf/logging.properties
-Djava.endorsed.dirs=/Library/Tomcat/endorsed -classpath :/Library/
Tomcat/bin/bootstrap.jar -Dcatalina.base=/Library/Tomcat -
Dcatalina.home=/Library/Tomcat -Djava.io.tmpdir=/Library/Tomcat/temp
org.apache.catalina.startup.Bootstrap start
15284 R+ 0:00.00 0 0 0 599740 372 - 0
0.0 0.0 grep java
this is on raid2b:
raid2b:/usr/local/apache/logs administrator$ ps -avx |grep java
10364 R 1129:31.91 0 2316 0 1462244 126144 - 0
100.1 -6.0 /System/Library/Frameworks/JavaVM.framework/Versions/
CurrentJDK/Home/bin/java -
Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -
Djava.util.logg
12790 S+ 0:00.00 0 812 0 27376 420 - 0
0.0 -0.0 grep java
10365 Z 0:00.00 0 404 0 0 0 - 0
0.0 -0.0 (java)
reptile:logs administrator$ ps -avx |grep java
68266 S 16:44.41 0 0 0 496476 99864 - 0
0.0 2.4 /System/Library/Frameworks/JavaVM.framework/Versions/
CurrentJDK/Home/bin/java -
Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -
Djava.util.logging.config.file=/usr/local/tomcat/conf/
logging.properties -Djava.endorsed.dirs=/usr/local/tomcat/endorsed -
classpath :/usr/local/tomcat/bin/bootstrap.jar -Dcatalina.base=/usr/
local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/
local/tomcat/temp org.apache.catalina.startup.Bootstrap start
73272 S+ 0:00.00 0 0 0 599740 376 - 0
0.4 0.0 grep java
Looks to me that Tomcat is not running right on raid2b. I do not know
of any other programs using the 8009 port. The java -version on the
three machines:
pathsrv1:apache2 administrator$ java -version
java version "1.5.0_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-
b06-284)
Java HotSpot(TM) Server VM (build 1.5.0_16-133, mixed mode)
raid2b:/usr/local/apache/logs administrator$ java -version
java version "1.5.0_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-
b06-275)
Java HotSpot(TM) Client VM (build 1.5.0_16-132, mixed mode)
reptile:logs administrator$ java -version
java version "1.5.0_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-
b06-284)
Java HotSpot(TM) Server VM (build 1.5.0_16-133, mixed mode)
Thanks ahead,
János
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
