How much does the webapp know

[jadin]

Is it possible for a webapplication to determine what node it is on if I am running multiple instances of the application on a single jboss server?

Id like to send an email from both applications and for them to tell me which instance they are running on.

For instance, 1 jboss server running two instances: NodeA, NodeB

I'd like to have in the subject line:

Subject: Hi I am NodeA if the app running on NodeA fires off an email.

Is this possible or will I have to use InetAddress.getLocalHost().toString(); and convert the returned IP manually with my own properties file that has key value pairs like so:

127.0.0.1=NodeA
127.0.0.2=NodeB

Thanks.

[jaikiran]

Depends on what you mean by the node name. Is it the machine hostname that you want to send in the mail or is it the name of the server configuration like "default" "all" etc... If it's the latter then i don't see how IP address would come into picture.

[jadin]

If I ran two of the same application on one jboss server, but two different nodes, can I tell the difference if I am on node A or node B? Yes, basically, if I ran one on all and a second one on default, or if I just copied them into their own nodes.

[jaikiran]

"Jadin" wrote:
If I ran two of the same application on one jboss server, but two different nodes, can I tell the difference if I am on node A or node B?

Yes. This statement on the individual server nodes will give you the info

System.getProperty("jboss.server.name");

More info here http://www.jboss.org/community/wiki/JBossProperties

[jadin]

This is exactly what I wanted. Thank you.