[Swift-devel] Re: Worker connection

[Mihael Hategan]

On Fri, 2010-08-13 at 12:13 -0500, Allan Espinosa wrote:
> So this is simply passed to the worker?  The "url" parameter is still the one
> used to spawn the service right?

Right. Using the URL worked the most reasonably, but some machines (like
Intrepid) would still fail with that (the external ip is not accessible
by the WNs). Also it doesn't work well when the URL is "localhost".

Btw, the way it is passed or whether it is passed to the worker, I don't
care about. A potential solution has flexibility to address the issue in
whatever way.

> 
> -Allan
> On Fri, Aug 13, 2010 at 11:35:59AM -0500, Mihael Hategan wrote:
> > On Fri, 2010-08-13 at 11:30 -0500, Jonathan Monette wrote:
> > > Hello,
> > >      How does the worker decide what connection to connect to?  Right 
> > > now what I think it does is it runs ifconfig and greps the inet address 
> > > and then test each of these connections.  Is this correct?  When I am 
> > > running on PADS it seems that the worker always chooses the wrong 
> > > connection to the service.  It seems to choose the UBS0 connection where 
> > > the correct connection is the ib0 connection.  Is there a way that maybe 
> > > the worker can be fixed to choose a better connection or the correct 
> > > connection?  This seems to be only happening on PADS.
> > > 
> > 
> > That was temporary. Initially it would use the same address as the url
> > in sites.xml. Then I added the "try all interfaces" thing, but in some
> > cases the connect on certain wrong addresses does not fail quickly
> > enough and has to timeout instead, which usually takes a few minutes. So
> > that got disabled and only the frist address is used now (unless
> > overridden - see below).
> > 
> > You can say <profile namespace="globus"
> > key="internalHostname">x.y.z.w</profile> in sites.xml
> > 
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