Tomcat Clustering via Uni Cast doesn't work
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Key: GERONIMO-4955
URL: https://issues.apache.org/jira/browse/GERONIMO-4955
Project: Geronimo
Issue Type: Bug
Security Level: public (Regular issues)
Components: Clustering
Affects Versions: 2.1.4, 2.2
Environment: Server 1:
OS:Windows Vista amd64 6.0 build 6001 Service Pack 1
Geronimo: 2.2-SNAPSHOT Build 2009.09.28-12:26:20.913+0800
JVM: JDK 6
Server 2:
OS: Windows Server 2008 amd64 Version 6.0 build 6002 Service Pack 2
Geronimo:2.2-SNAPSHOT 2009.09.28-12:26:20.913+0800
JVM:JDK 6
Reporter: Lu Jiang
Below is a senario:
1.Install geronimo 2.2 on two machines,namely
9.186.10.60(NODE02),9.186.10.89(NODE03).
2.Configure Apache http server.
(1)add mod_jk.so to ApacheHttpServer_HOME/modules.
(2)add or modify workers.properties under ApacheHttpServer_HOME/conf like
worker.list=loadbalancer,status
worker.maintain=60
worker.NODE02.port=8009
worker.NODE02.host=9.186.10.60
worker.NODE02.type=ajp13
worker.NODE02.lbfactor=1
worker.NODE03.port=8009
worker.NODE03.host=9.186.10.89
worker.NODE03.type=ajp13
worker.NODE03.lbfactor=1
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=NODE02,NODE03
worker.loadbalancer.sticky_session=1
worker.status.type=status
(3)add information below to ApacheHttpServer_HOME/conf/[
LoadModule jk_module modules/mod_jk.so
# Loads the Jakarta Tomcat Connector module
JkWorkersFile conf/workers.properties
# Tells the module the location of the workers.properties file
JkLogFile logs/mod_jk.log
# Specifies the location for this module's specific log file
JkLogLevel debug
# Sets the module's log level to info
JkMount /* loadbalancer
# Sets a mount point from a context to a Tomcat worker. In this case will allow
access (forward the request) to the console.
3.
For NODE02:
(1)Modify GERONIMO_HOME/var/config/config-substitutions.properties
ClusterNodeName=NODE02
(2)Modify GERONIMO_HOME/var/catalina/server.xml.
<Engine name="Catalina" defaultHost="${ServerHostname}" jvmRoute="NODE02" >
For NODE03:
(1)Modify GERONIMO_HOME/var/config/config-substitutions.properties
ClusterNodeName=NODE03
(2)Modify GERONIMO_HOME/var/config/config.xml.
<Engine name="Catalina" defaultHost="${ServerHostname}" jvmRoute="NODE02" >
3.
I tried two ways to enable unicast clustering..One is to enable it in
config.xml and the other is to enable it in the deploy plan.
(Deploy the ream.xml first cause we have security realm configuration in the
application )
The first way:(enable it in config.xml)
On the two server,separately add GBean information under<module
name="org.apache.geronimo.configs/tomcat6/2.2-SNAPSHOT/car">
Refer to the attachment:excerptFromConfig1.xml and excertFromConfig2.xml
Then deploy the application servlet-examples-cluster-server2.war using Simple
simple-servlet-examples-cluster-plan2.xml as a deploy plan.
deploy the application servlet-examples-cluster-server3.war using Simple
simple-servlet-examples-cluster-plan3.xml as a deploy plan.
The second way:(enable it in deploy plan)
Without modification to config.xml,deploy the application directly.
deploy the application servlet-examples-cluster-server2.war using Simple
servlet-examples-cluster-plan2.xml as a deploy plan.
deploy the application servlet-examples-cluster-server3.war using Simple
servlet-examples-cluster-plan3.xml as a deploy plan.
Expected:
Session will be replicated .When node 02 fails,the node 03 will be the back
up.and vice versa.
But currently both way don't work, when node2 fails ,session is not replicated
to node03
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