[davewebb]

Try this:

# Define list of workers that will be used
# for mapping requests
# The configuration directives are valid
# for the mod_jk version 1.2.18 and later

# Define Node1
# modify the host as your host IP or DNS name.
worker.node1.port=8009
worker.node1.host=node1._._._.209
worker.node1.type=ajp13
worker.node1.lbfactor=1
# worker.node1.connection_pool_size=10 (1)

# Define Node2
# modify the host as your host IP or DNS name.
worker.node2.port=8009
worker.node2.host= node2._._._.124
worker.node2.type=ajp13
worker.node2.lbfactor=1
# worker.node1.connection_pool_size=10 (1)

# Load-balancing behaviour
worker.loadbalancer.type=lb
worker.loadbalancer.balanced_workers=node1, node2
worker.loadbalancer.sticky_session=1
worker.loadbalancer.local_worker_only=1
worker.list=loadbalancer

And for worker.node1.host dont use node1 or node2, just put the IP address of the machine like this (but using your own subnet)

worker.node1.host=192.168.1.209
worker.node2.host= 192.168.1.124

Remove this

However i have added the following lines of code with uriworkermap.properties as per hmesha's posting

Code:

# Test App
/TestApp=loadbalancer
/TestApp/*=loadbalancer

The JkMount in the apache VirtualHost directive takes care of this.

[hmesha]

Here's your problem

worker.node1.host=node1._._._.209

this line should only have the host ip address or name and not node1._._._.209 Remove node1 and node2 from the your workers.properties file. The way it's right now the host ip address is invalid and apache won't be able to resolve it.

You're very close, don't give up :)

cheers

[sreejava]

boss...

i removed the lines from uriworkermap.properties

and corrected the workers.properties file as

worker.node1.host=_._._.209

Now when i tried http://localhost/TestApp/ i got

ModJK should not allow me to see this once configured properly

======================================


In some other material i read that, there should be a tag in the web.xml of the WEB-INF in the war file.

By the way, in one of the previous posting i was directed to put

JkMount /YourApp/* loadbalancer

inside the

<VIRTUALHOST> </VIRTUALHOST>

and also that

The String "/YourApp/*" needs to match the ContextRoot setup in the web.xml file of your WAR.

And I have done this by adding

context-path="/TestApp"

as an attribute-value pair in the

<web-app><web-app>

like

<web-app context-path="/TestApp"><web-app>

It is correct. Right?

[davewebb]

You need this in your web.xml. Refer to the DTD for the correct order.

<!-- Indicated the app is coded for a clustered environment -->
<distributable/>

Your JkMount point shoud match the WAR Module Deployment Descriptor in your EAR's application.xml file.

<module>
 <web>
 <web-uri>TestApp.war</web-uri>
 <context-root>/TestApp</context-root>
 </web>
 </module>

[sreejava]

i ve to create the application.xml inside WEB-INF folder.right?

And its full content is as you suggested (i mean these code is not nested within any other tag, Right)

<module>
 <web>
 <web-uri>TestApp.war</web-uri>
 <context-root>/TestApp</context-root>
 </web>
 </module>

[sreejava]

sorry for asking "where the application.xml has to be created".

I got it from various websites...
Let me explain my directory structure.

Mine was a sample application with the following directory structure which properly served from JBoss server (that is when i make a request for http:// localhost:8080/TestApp/ )

Previous Directory Structure (WAR)

TestApp.war
| /venkatesh.jsp
| /showname.jsp
| /db.jsp
| /MET-INF
| /Manifest.mf
| /WEB-INF
| /web.xml

But Now, i have changed the directory structure in order to include the application.xml and made it TestApp.EAR as follows,
This is also properly served from JBoss server. So i think i have included the application.xml correctly.

Current Directory structure (EAR)

TestApp.ear
 |
 |----/META-INF/application.xml
 |
 |----/TestApp.war
 | /venkatesh.jsp
 | /showname.jsp
 | /db.jsp
 | /MET-INF
 | /Manifest.mf
 | /WEB-INF
 | /web.xml

Hope, it is correct.

BUT Painfully.
...
....
....i failed Again!!!!!, even with the following (suggested) modifications...


1. Modified workers.properties as per the suggestion.

2. Removed the unnecessary modification in uriworkermap.properties file

3. included application.xml with the following content

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

<application>
<module>
 <web>
 <web-uri>TestApp.war</web-uri>
 <context-root>/TestApp</context-root>
 </web>
</module>
</application>

4.included the disributable tag in web.xmlas follows

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" context-path="/TestApp">
 <distributable/>
 <welcome-file-list>
 <welcome-file>
 venkatesh.jsp
 </welcome-file>
 </welcome-file-list>
</web-app>

still the page-index.html which is inside htdocs/TestApp/ folder appeears when i try http://TestApp;

Kindly help...

with regards

sree

[sreejava]

If possible kindly verify the steps i have done for achiving Load Balencing....( and FAILED.........)

Inside Apache2

1.Apache2.2\conf\httpd.conf (modified)
2.Apache2.2\modules\mod_jk.so (downloaded)
3.Apache2.2\conf\mod_jk.conf (created)
4.Apache2.2\conf\workers.properties (created)

Inside JBoss of Both the nodes

5.JBOSS\..\node1\deploy\jbossweb-tomcat55.sar\server.xml (modified)
6.JBOSS\..\node1\deploy\jbossweb-tomcat55.sar\META-INF\jboss-service.xml (modified)

Inside sample application

7.TestApp.EAR\...\application.xml
8.TestApp.WAR\...\.web.xml

Should i post the contents of the files i have added or modified inorder to find the error?

[sreejava]

THANK YOU BOSS.................

I SUCCEEDED IN MY ATTEMPT ..


EVEN THE SESSION DETAILS GOT TRANSFERRED BETWEEN SERVERS....

THANKS A LOT..
THANK YOU
THANK YOU
THANK YOU

[davewebb]

Sree,

You were able to accomplish in a few days what took me and others several weeks. You are very welcome. Please support the open source forums by becoming more familiar with the clustering process. Then, monitor this group and help others. I'm glad you have everything working and I think you are going to be really happy with Jboss as your app server solution.

Good job!

[sreejava]

Hi David Webb and Hany Mesha,

Special thanks to both of you?

I think it became possible because I was in an advantageous position to beggin with the timely help, guidance and support from broad minded people like you. I feel really proud to be part of this open source forum and definitely I will remain an active member.

Thanks to all members of the forum

Thanks and Regards

Sree.

[jjay009]

Hi Dave Webb

Can you please refer to the solution you posted under the following link.

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4016787#4016787

I removed the commons-digester.jar file from the EAR file. Now I am getting following error.

---------------------------------------------------------------------------------------------------------------------------------------------------------------
ERROR [ActionServlet] Unable to initialize Struts ActionServlet due to an unexpected exception or error thrown, so marking the servlet as
unavailable. Most likely, this is due to an incorrect or missing library dependency.
java.lang.NoClassDefFoundError: org/apache/commons/chain/config/ConfigParser
at org.apache.struts.action.ActionServlet.initChain(ActionServlet.java:1625)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:347)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3951)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4225)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
---------------------------------------------------------------------------------------------------------------------------------------------------------------

Do you have any idea why i am experiencing this error? and how to fix it?

Thank you

[davewebb]

What is your environment? JDK/JRE, JBoss, OS?

[jjay009]

JDK 1.5, JBoss 4.0.5 and WindowsXP

Thanks