[jboss-dev] Public IP address used by JBoss AS

[Bela Ban]

Brian Stansberry wrote:
> Since this is really an API discussion, I'd still like to hear more 
> about what the real world use cases are. I get the one where a server
> listens on interface X for external requests and uses interface Y for 
> internal to the cluster traffic. I can dream up others. What other 
> ones are actually used?

Just to re-iterate: this cloud use case is very important. In most cloud 
environments, you don't get a static IP address unless you use something 
like elastic IP addresses (EC2) or some kludges to find out the IP 
address and then resolve it via dyndns.org. Some cloud providers charge 
extra for traffic on public IPs, and traffic on site-local IPs is free. 
The latter of course could be used for JGroups traffic (discovery, 
replication, distribution).

In my use case, as a matter of fact all traffic can use site-local IP 
addresses except for the AJP connector: because it will be accessed by 
httpd mod-cluster (in a different cloud), it needs a public IP.

This use case is really for running JBoss AS in the cloud


-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss