EJBs in a Load Balanced Environment

ejsdeveloper Dec 3, 2008 1:29 PM

We have two JBoss servers with the same EJB. How do we load balance these two servers? We set up a load balancer with an IP that sends traffic to each JBoss server. The client can successful connect to JBoss server (#1) via the load balancer IP. However, once JBoss server #1 is down, the client cannot connect to JBoss server #2. Any suggestions or links?

Thanks!

1. Re: EJBs in a Load Balanced Environment

daniel.celentano Dec 3, 2008 2:43 PM (in response to ejsdeveloper)

Check this link:

http://www.jboss.org/file-access/default/members/jbossas/freezone/docs/Clustering_Guide/beta422/html/index.html

Daniel
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2. Re: EJBs in a Load Balanced Environment

ejsdeveloper Dec 8, 2008 12:38 PM (in response to ejsdeveloper)

Hi Daniel,

Thanks for the link. There is lots to read here. Any shortcuts or hints?

Thanks again.
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3. Re: EJBs in a Load Balanced Environment

daniel.celentano Dec 9, 2008 8:30 AM (in response to ejsdeveloper)

It really easy!.

1) Make your EJB clusterized -- Add Annotation @Clustered on any EJB
2) copy cluster-service.xml from all to default
3) copy ejb3-clustered-sfsbcache-service.xml from all to default (if you have SFSB)
4) and finally modify you jndi.properties change port from 1099 to 1100. (on clients app)

I'have make this 1000 times for many customers, tell me if it work for you?

Regards,
Daniel
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4. Re: EJBs in a Load Balanced Environment

ejsdeveloper Dec 11, 2008 1:59 PM (in response to ejsdeveloper)

Hi Daniel,

We are using old EJBs (not EJB3) and jboss-4.0.1. Will your four suggestions still work in our environment?

Thanks
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