Re: Clustering help..!

Wed, 26 Apr 2006 10:47:18 -0700 

Comments below..

Santosh Koti wrote:

Hernan,
I got it working finally , both with the sticky session=0,1 , in non-sticky session , some time it fails...! 


Any idea..?
I'd recommend always running with sticky session enabled. This means that all requests from a particular client (e.g. browser)will be routed to the same cluster member if session data is used. This is the safest and most efficient way to assure that session state is maintained across http requests. Requests will be rerouted to a different cluster member only when the original cluster member fails or is unreachable. 



(I have given my config details after my questions,ie, below..!)


*Some questions:*
*a) Note: Once I build my EAR file , I deploy it on both the machines, so the Geronimo-web.xml is the same on both machines, I guess it has to be different w.r.t 'mcastBindAddress' - value for different instances..! *
Yes, there are two spots in the deployment plan that needs to be updated with the IP address for the specific server. 


* *

* *
*b) One more question I need to ask is : gbean name="FarmWarDeployer" , needs to be specified in the deployment plan , or is it optional…?*
IIRC, FarmWarDeployer is commented out in the deployment plan as it was never tested. It was suspected that there may be additional changes to geronimo to fully support farming. 



* *

* *
*c) By the way , what is farming , is it used for deploying **ur** application on to the cluster members, if so , will it change the deployment plan at run time..?* 


Farming provides hot deployment of an application across a cluster.
Basically, an application (war) is deployed on one cluster member and is automatically deployed to all of the other members in the cluster. 



*(correct me if I am wrong..!)*


As asked, here are my details (that I added to the existing stuff):


-------------Part of Httpd.conf file ------


LoadModule jk_module modules\mod_jk.so

JkWorkersFile C:\Apache-HTTP\Apache2\conf\workers.properties

JkLogFile     C:\Apache-HTTP\Apache2\logs\mod_jk.log

#JkLogLevel    info


JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

JkAutoAlias C:\Apache-HTTP\Apache2\config-store

#JkMount /console/* ajp13

#JkMount /setl/* ajp13

JkMount /setl* loadbalancer


-------------End of Httpd.conf file ------


--------------workers.properties----------------

worker.list=loadbalancer,status,node1,node2

worker.node1.port=8009

worker.node1.host=localhost

worker.node1.type=ajp13

worker.node1.lbfactor=100


worker.node2.port=8009

worker.node2.host=172.25.203.139

worker.node2.type=ajp13

worker.node2.lbfactor=100


worker.loadbalancer.type=lb

worker.loadbalancer.balance_workers=node1,node2

#worker.loadbalancer.sticky_session=0

worker.loadbalancer.sticky_session=1


worker.status.type=status

/setl=loadbalancer

/setl/*=loadbalancer


--------------end of workers.properties----------------


-----------------geronimo-web.xml----------------


<?xml version="1.0" encoding="UTF-8"?>

<web-app

    xmlns="http://geronimo.apache.org/xml/ns/j2ee/web-1.0";
xmlns:naming="http://geronimo.apache.org/xml/ns/naming-1.0"; 
    configId="MyConfigName"

    parentId="SBank/Entities"

  >


  <container-config>
<tomcat xmlns="http://geronimo.apache.org/xml/ns/web/tomcat/config-1.0";> 

            <cluster>TomcatCluster</cluster>
<gbean name="TomcatCluster" class="org.apache.geronimo.tomcat.cluster.CatalinaClusterGBean">
<attribute name="className">org.apache.catalina.cluster.tcp.SimpleTcpCluster</attribute> 

                  <attribute name="initParams">
managerClassName=org.apache.catalina.cluster.session.DeltaManager 

                      expireSessionsOnShutdown=false

                      useDirtyFlag=false

                      notifyListenersOnReplication=true

                  </attribute>
<reference name="Membership"> <moduleType>J2EEModule</moduleType> <name>TomcatMembership</name> </reference>
<reference name="Receiver"> <moduleType>J2EEModule</moduleType> <name>TomcatReceiver</name> </reference>
<reference name="Sender"> <moduleType>J2EEModule</moduleType> <name>TomcatSender</name> </reference>
<reference name="TomcatValveChain"> <moduleType>J2EEModule</moduleType> <name>ReplicationValve</name> </reference> 

                  <!--
<reference name="ClusterDeployer"> <moduleType>J2EEModule</moduleType> <name>FarmWarDeployer</name> </reference> 

                  -->

                    </gbean>
<gbean name="TomcatMembership" class="org.apache.geronimo.tomcat.cluster.MembershipServiceGBean">
<attribute name="className">org.apache.catalina.cluster.mcast.McastService</attribute> 

                        <attribute name="initParams">

                            mcastAddr=228.0.0.4

                            mcastBindAddress= 172.21.34.97

                            mcastPort=45564

                            mcastFrequency=500

                            mcastDropTime=3000

                        </attribute>

                   </gbean>


                       <!-- Receiver -->


                   <gbean name="TomcatReceiver"
class="org.apache.geronimo.tomcat.cluster.ReceiverGBean">
<attribute name="className">org.apache.catalina.cluster.tcp.ReplicationListener</attribute> 

                       <attribute name="initParams">

                           tcpListenAddress= 172.21.34.97

                           tcpListenPort=4001

                           tcpSelectorTimeout=100

                           tcpThreadCount=6

                       </attribute>
</gbean> 
                   <!-- Sender -->


                   <gbean name="TomcatSender"
class="org.apache.geronimo.tomcat.cluster.SenderGBean">
<attribute name="className">org.apache.catalina.cluster.tcp.ReplicationTransmitter</attribute> 

                       <attribute name="initParams">

                           replicationMode=pooled

                           ackTimeout=15000

                       </attribute>
</gbean> 
                    <!-- Valves -->

                 <gbean name="ReplicationValve"

                   class="org.apache.geronimo.tomcat.ValveGBean">
<attribute name="className">org.apache.catalina.cluster.tcp.ReplicationValve</attribute> 

                   <attribute name="initParams">
filter=.*\.gif;.*\.js;.*\.css;.*\.png;.*\.jpeg;.*\.jpg;.*\.htm;.*\.html;.*\.txt; 

                   </attribute>
</gbean> 
        </tomcat>

  </container-config>


</web-app>


----------------------end of Geronimo-web.xml---------------------


Thanks for ur time & effort..!


Smiles,

Santosh.

"Don't talk about yourself; it will be done when you leave. "


-----Original Message-----
From: Hernan Cunico [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 26, 2006 9:28 PM
To: [email protected]
Subject: Re: Clustering help..!


Hi Santosh,

can you provide more details (what, how, when)


Can you forward a request from one HTTP to one Geronimo?


Cheers!

Hernan


Santosh Koti wrote:


 Hi Guys,















 While doing clustering ,







 I have the following setup:















  Machine1: Geronimo1







 Machine2: Geronimo2















 Machine3: Apache 1







 Machine4: Apache2















 I had made the config, but my apache setup is fine , but I think , it is



 not able to connect to my expected clustered machines..!















 What is that , I am missing..?























 Thanks,







 Santosh.







 "Don't talk about yourself; it will be done when you leave. "















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