From: Tom Mueller <tom.mueller_at_oracle.com>
Date: Thu, 31 Mar 2011 09:31:28 -0700

The error message indicates that you already have a process on the
hosta170 and hosta180 that is listening on port 24848. This might be
another GlassFish instance or it could be some other process. You need
to login to those hosts and determine what servers are running there,
specifically what is listening on that port.

Tom