Implementing App-server (JBoss) clustering : Java, IE 7.0

May 16, 2008 10:15am pdt

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04.25.2008 at 04:01AM PDT, ID: 23353072 | Points: 500

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Implementing App-server (JBoss) clustering

Zones: Jboss Application Server, Java Programming Language, JBoss-IDE

Tags: Java, IE 7.0

Hi,
I am very new to Appserver (JBoss) clustering. I want to know what all changes do i have to do in the JBoss files so as to configure it in a clustered environment. I am using JBoss 4.0.5GA.

Thanks,
Aniket.

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Question Stats

Zone: Software

Question Asked By: aniket_k

Question Asked On: 04.25.2008

Participating Experts: 1

Points: 500

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04.25.2008 at 04:59AM PDT, ID: 21438528

aniket_k:

i have just to configure JBoss to set up a clustered environment.

04.28.2008 at 03:14PM PDT, ID: 21458102

ramazanyich:

By default all configuration of JBOSS is configured with clustering support.
So your jboss nodes should be on the same network and you just try to start:
#run -c all

on all your cluster nodes. That's it.

There is a detailed documentation about clustering on jboss site at http://docs.jboss.org/jbossas/guides/clusteringguide/r2/en/html/

04.28.2008 at 09:46PM PDT, ID: 21459746

aniket_k:

Thanks ramazanyich for the reply,

Yes i am doing this on both the clustered nodes. However i get an error 'Clustering, javax.naming.NamingException: Could not dereference object [Root exception is javax.naming.NameNotFoundException: topic not bound] ' on starting the second node, however the first node starts successfully.
I have posted the error on my second same question. (http://www.experts-exchange.com/Software/Server_Software/Application_Servers/Java/Jboss/Q_23357892.html)

Thanks,
Aniket.

04.28.2008 at 11:28PM PDT, ID: 21460011

ramazanyich:

I see it is due to special way fo JMS clustering in jboss.
Please read carefully following part of clustering guide http://docs.jboss.org/jbossas/guides/clusteringguide/r2/en/html/cluster.chapt.html#clustering-jms

You need to configure JMS to store everything in common database (myslq, oracle, etc)

04.29.2008 at 05:38AM PDT, ID: 21461572

aniket_k:

Thanks again for you help,
Now as per the link u provided above, i performed the following steps:
a) Changed the name of the 'hsqldb-ds.xml' to 'oracle-ds.xml'. This file is placed at /server/all/deploy.
b) Copied and placed the 'hsqldb-jdbc2-service.xml'. Renamed this file to 'oracle-jdbc2-service.xml' and placed it at /server/all/deploy-hasingleton/jms.
c) Now started the first node and got the below exception:
"18:01:51,250 ERROR [MainDeployer] Could not create deployment:
file:/E:/JBoss/4.0.5/server/all/deploy-hasingleton/jms/oracle-jdbc2-service.xml
org.jboss.deployment.DeploymentException: Trying to install an already registered mbean: jboss.mq:service=DestinationManager".
I am attaching the full log (server.log).

Thanks,
Aniket.

04.29.2008 at 05:52AM PDT, ID: 21461675

aniket_k:

Oh..
i renamed the 'hsqldb-jdbc-state-service.xml' and 'hsqldb-jdbc2-service.xml' files to 'oracle-jdbc-state-service.xml' and 'oracle-jdbc2-service.xml' respectively. After this the above exception was no longer thrown and the node 1 started successfully. However on starting the node2, the same error 'javax.naming.NamingException: Could not dereference object [Root exception is javax.naming.NameNotFoundException: topic not bound' is thrown. Pleae help.

Thanks,
Aniket.

04.29.2008 at 06:03AM PDT, ID: 21461764

ramazanyich:

Hi, you didn't got the main idea of clustered JMS server.
It is "The JMS server is configured to persist its data in the DefaultDS. By default, that is the embedded HSQLDB. In most cluster environments, however, all nodes need to persist data against a shared database."

As you see that you should use non embedded database - oracle or mysql for example (could be postgress or MS sQL), but it should be one database instance.
Just renaming config files doesn't change the db connection.
so first you should install (or use existign one) RDBMS database which is accessible by all nodes in your cluster.
And after that COPY example files from JBOSS_HOME/docs/examples/jms folder to deploy-hassingletoon/jms directory on all nodes.
For example in case of oracle DB it is oracle-jdbc2-service.xml
Datasource examples are in JBOSS_HOME/docs/examples/jca folder. eg for oracle is oracle-ds.xml. Copy this file to the JBOSS_HOME/server/all/deploy folder on all nodes.

04.29.2008 at 07:22AM PDT, ID: 21462525

aniket_k:

Hi ramazanyich,
Thanks for al you help and patience. Actually i am very-2 new to Jboss.
As you stated above i copied the oracle-jdbc2-service.xml and oracle-ds.xml from the Jboss directory and placed them at the locations as you told above. However we get an error "19:50:36,218 ERROR [MainDeployer] Could not create deployment: file:/E:/JBoss/4.0.5/server/all/deploy-hasingleton/jms/oracle-jdbc2-service.xml org.jboss.deployment.DeploymentException: Trying to install an already registered mbean: jboss.mq:service=DestinationManager".
Please help me out.
I have attached the log file and my ***-service.xml and ***-ds.xml.

Thanks in advance,
Aniket.

                       
                          
                             
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                                This is my ***-ds.xml file which i am already using:
<?xml version="1.0" encoding="UTF-8"?>
<datasources>
    <no-tx-datasource>
        <jndi-name>ACSServerDS</jndi-name>
 
        <!-- Oracle version: replace SERVER_NAME and SID -->
        <driver-class>oracle.jdbc.OracleDriver</driver-class>
        <connection-url>jdbc:oracle:thin:@192.16.18.745:1521:orcl</connection-url>
        <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
 
        <!-- Authentication: replace USER_NAME and PASSWORD -->
        <user-name>test</user-name>
        <password>test1</password>
 
        <!-- The minimum connections in a pool/sub-pool. Pools are lazily constructed on first use -->
        <min-pool-size>5</min-pool-size>
 
        <!-- The maximum connections in a pool/sub-pool -->
        <max-pool-size>50</max-pool-size>
 
        <!-- this will be run before a managed connection is removed from the pool for use by a client-->
        <check-valid-connection-sql>select count(model_id) from model</check-valid-connection-sql>
    </no-tx-datasource>
 
    <local-tx-datasource>
        <jndi-name>ACSServerXADS</jndi-name>
 
        <!-- Oracle version: replace SERVER_NAME and SID -->
        <driver-class>oracle.jdbc.OracleDriver</driver-class>
        <connection-url>jdbc:oracle:thin:@192.16.18.745:1521:orcl</connection-url>
        <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name>
 
        <!-- Authentication: replace USER_NAME and PASSWORD -->
        <user-name>test</user-name>
        <password>test1</password>
 
        <!-- The minimum connections in a pool/sub-pool. Pools are lazily constructed on first use -->
        <min-pool-size>5</min-pool-size>
 
        <!-- The maximum connections in a pool/sub-pool -->
        <max-pool-size>50</max-pool-size>
 
        <!-- this will be run before a managed connection is removed from the pool for use by a client-->
        <check-valid-connection-sql>select count(model_id) from model</check-valid-connection-sql>
    </local-tx-datasource>
</datasources>
 
 
This is my ***-service.xml which i am using:
 
<?xml version="1.0" encoding="UTF-8"?>
<server>
 
    <!-- JMS Services -->
    <mbean code="org.jboss.mq.server.jmx.Queue"
         name="jboss.mq.destination:service=Queue,name=acs/IncomingEventQueue">
        <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
        <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends>
        <attribute name="SecurityConf">
            <security>
                <role name="guest" read="true" write="true"/>
                <role name="publisher" read="true" write="true" create="false"/>
                <role name="noacc" read="false" write="false" create="false"/>
            </security>
        </attribute>
    </mbean>
    <mbean code="org.jboss.mq.server.jmx.Queue"
         name="jboss.mq.destination:service=Queue,name=acs/BtFinisherQueue">
        <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
        <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends>
        <attribute name="SecurityConf">
            <security>
                <role name="guest" read="true" write="true"/>
                <role name="publisher" read="true" write="true" create="false"/>
                <role name="noacc" read="false" write="false" create="false"/>
            </security>
        </attribute>
    </mbean>
    <mbean code="org.jboss.mq.server.jmx.Queue"
         name="jboss.mq.destination:service=Queue,name=acs/LoaderQueue">
        <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
        <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends>
        <attribute name="SecurityConf">
            <security>
                <role name="guest" read="true" write="true"/>
                <role name="publisher" read="true" write="true" create="false"/>
                <role name="noacc" read="false" write="false" create="false"/>
            </security>
        </attribute>
    </mbean>
    <mbean code="org.jboss.mq.server.jmx.Topic"
         name="jboss.mq.destination:service=Topic,name=acs/NotificationTopic">
        <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends>
        <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends>
        <attribute name="SecurityConf">
            <security>
                <role name="guest" read="true" write="true"/>
        