RE: RMI Clustering done. Now want more.

[Eduardo Estefano]

Yes, I would be very glad if you could give me some hints on how to set this up.   I have two orion servers behind a Foundry Server Irion load balancer/switch. I tried setting up the clustering, but was only able to get the HTTP clustering to work.   Since I could not get my EJBs to be clustered, I configure the ejbs with exclusive-write-access="false", so the data is consistent. I also cannot use HTTP clustering because we use statefull session beans.   How do I setup ejb clustering?   thanks   -----Original Message----- From: Lachezar Dobrev [mailto:[EMAIL PROTECTED]] Sent: Friday, June 15, 2001 1:18 AM To: Orion-Interest Subject: RMI Clustering done. Now want more.      Hello.    OK. I was able to (at last) run the RMI clustering. It now works. But... I have a question...    Now I can put up a cluster, and when a bean does not exist on the server it is searched on the cluster and used. However if it is deployed on more than one machine... It is not found on all of them, but rather on only one.      For simplicity let's assume we have OrionA, OrionB, OrionC and OrionD.    a) on all machines we have EnterpriseBean1 deployed. It accesses EnterpriseBean2    b) machine OrionA does not have EnterpriseBean2 deployed.    c) machines OrionB, OrionC and OrionD have EnterpriseBean2 deployed.    d) all machines have a RMI cluster set-up and working.       (BTW) Because I needed quite some time to understand why the       cluster was not working I am eager to help anyone, that needs       help on the subject.      If machine OrionA runs EnterpriseBean1 it will have to look-up EnterpriseBean2, which is used by EnterpriseBean1.    There is no problem to find that bean (it exists on the cluster). However... Once EnterpriseBean2 is used on OrionC it keeps using that one. Why? Also. If we deploy EnterpriseBean2 on OrionA it is always found there and not on ANY other cluster machine.      1. How does Orion know on which machine to use the bean? The last one, that wakes up?    2. Is there a way to implement (at least) a round-robin technique to access the clustered bean on more than one server? I mean... When I look-up EnterpriseBean2... I would like to have a different server answering every time. Round-robin is sufficient, even though a loadbalancing technique would be better appropriate.      Ok. Waiting forward to hearing from you all...      P.S. Another question... CAN I TURN WEB-SERVICES OFF??? I tried removing the default-web-app tag in the server.xml, but it starts complaining about no default web-app :((( I want to have some Orion servers to act as EJB only servers.      Lachezar