Am 16.02.2015 um 07:25 schrieb Goncalo Borges <[email protected]>:
> 
> Hello all...
> 
> I'm currently facing the following problem:
> 
> 1./ I am running a grid engine qmaster node in a research network (NetA), and 
> I am trying to connect some exec nodes which are deployed in a commercial 
> network (NetB).
> 
> 2./ We have set a VPN (in a NetC) to secure the connection between NetB and 
> NetA.
> 
> 3./ However, I am not able to start the sgeexecd daemon. At startup time, it 
> complains with the following error:
> 
> error: commlib error: access denied (client IP resolved to host name 
> "vpn.my.NetC". This is not identical to clients host name "execd.my.NetB")
> ERROR: unable to contact qmaster using port 6444 on host "qmaster.my.NetA"

Is there more than on network on these additional nodes (but each node can 
still be reached by an individual address - no NAT in the game)? Maybe you have 
to route SGE to use the addresses in NetC as the primary one:

https://arc.liv.ac.uk/SGE/howto/multi_intrfcs.html

-- Reuti


> 4./ This error is triggered when the execd daemon tries to contact the 
> qmaster, and the qmaster complains that the IP of the execd node is not the 
> one declared in DNS. Indeed, the qmaster node is seeing the IP of the VPN 
> server.
> 
> Did anyone already tried to run Grid Engine using VPNs?
> 
> Is there an easy way out?
> 
> Thank you for the help.
> 
> Goncalo
> 
> -- 
> Goncalo Borges
> Research Computing
> ARC Centre of Excellence for Particle Physics at the Terascale
> School of Physics A28 | University of Sydney, NSW  2006
> T: +61 2 93511937
> 
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