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On Wed, Mar 23, 2005 at 10:20:34AM +0100 or thereabouts, Andreas Unterkircher wrote: > I'm having a general question on how yaim configures torque: > > On the CE (= torque server) edg-pbs-knownhosts & edg-pbs-shostsequiv are > executed to add the ssh keys/hostnames of all WNs (= torque clients) and > the SE. This is necessary as the WNs need to scp their output back to the > CE. But also on the WNs edg-pbs-knownhosts gets executed. I wonder why > this is necessary for the WNs. Is it because of Torque or are there other > LCG services which need these keys on the WNs ? Also, why has the SE ssh > key also to be added ? If one had shared NFS home dirs on the CE/WNs could > one abandon all the ssh configuration ? (of course one would have to > configure pbs_mom with the correct $usecp directives). The WNs only need to know the CEs identity. Unless you are using scp as the transport for parallel jobs. Correct, if use the $usecp, you can abandon the ssh setup up completly. Steve > > Thanks, > Andreas > > > -- > Andreas Unterkircher > IT Department > CERN > CH-1211 Geneva 23 > http://cern.ch/openlab -- Steve Traylen [log in to unmask] http://www.gridpp.ac.uk/