Clustering and Load balancing features of webserver across Cluster

[barunva]

Hi,
We would like to know whether the Clustering and Load balancing
features of webserver such as Apache Tomcat are working across the Clusters or not.

If it is working, is it possible to have the following setup across
the Cluster,

1. Assume there is no NFS filesystem across cluster

2. One Cluster is running on Linux Os and another Cluster
is running from AIX Os.

Please help us in this regard.
Regards,
B.Arunachalam
Bangalore

[zoomix]

Load balancing is not a feature of tomcat - you'll have to use an external load balancer. Personally, I use an apache server with mod_jk.

Depends on what you want. If you want your sessions replicated between the two clusters then the answer is a theoretical yes. If you have the same java-versions, tomcat-versions and .war installed on both OSes, you should be fine.

If you don't need session replication then you have even less to worry about.

If you can live without fail-over but want to keep sessions, you can configure mod_jk to always send the same session to the cluster it was created on.