clustering in tomcat

[WebGoat]

clustering in tomcat. anybody have done it ? how to do it ?
javaworld article says only theoretically but without any steps. anybody can tell me the steps ?

 

[sedj]

first link from google ("clustering tomcat") :

http://jakarta.apache.org/tomcat/tomcat-5.0-doc/cluster-howto.html

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Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[WebGoat]

already visted that link. and also gone through some other articles but not working . it is not supporting failover.

steps i followed


1. i created tomcat-1,tomcat-2,tomcat-3,tomcat-4.

2. changed their Connector port + server port in each of their server.xml file.
ports for
tomcat1-->8081
tomcat1-->8082
tomcat1-->8083
tomcat1-->8084


3.

http://localhost:8081===>shows

welcome message.

http://localhost:8082===>shows

welcome message.

http://localhost:8083===>shows

welcome message.

http://localhost:8084===>shows

welcome message.


4. to cluster config, i uncommented Cluster tag in each of the server.xml and changed their tcplisten address to 4001,4002,4003,4004.

5. restarted server. i found in the server-log they are getting clustered.


6. so, i tested Fail-Over. i closed

http://localhost:8084.

and opened again

http://localhost:8084.

"page can not be displayed"


It could not failed over !!


Tell me whats wrong ?

 

[WebGoat]

is there any steps i am missing ?