[Swift-devel] a note on running coasters on osg's RENCI Engage site

[Mats Rynge]

Ben Clifford wrote:
> Coasters in the release don't work on RENCI Engage.
> 
> I fiddled with this a bit before, and just fiddled with it a bit more.
> 
> The external IP address of the cluster head node (152.54.1.231) is not 
> accessible from the cluster worker nodes, which sit on a different 
> network.
> 
> The headnode *is* accessible from its IP address on that network, 
> 192.168.1.11.
> 
> Forcing the URI passed to workers to use that IP address instead of the 
> automatically determined one is sufficient to make coasters work on the 
> RENCI Engage site.

I'm surprised that the private address was not used already. I mean,
isn't this the use case for putting the coaster forwarder on the
headnode in the first place? If you have outbound network connectivity,
the coaster daemons in the worker nodes could connect directly to the
host where swift is running on.

-- 
Mats Rynge
Renaissance Computing Institute <http://www.renci.org>