[Condor-users] Does Condor cache resolved IPs? Can I ask it to stop?

["Ross, Jason" <jason.ross@xxxxxxxxx>]

IT came by my desk today (and you already know this is a story that doesn’t have a happy ending…), and rewired the network to a few of my machines.

One of them is our Condor central box, including the collector (and negotiator and credd).

 

In the course of doing that rewiring, my collector got a new IP assigned to it.

Now all my poor orphaned Condor machines have no idea where to send their classads; I’m reading their logs, and they’re pointed at the wrong (presumably old) IP address for the collector.

 

Here’s the surprising part: ipconfig /flushdns doesn’t seem to make a difference (it’s a Windows Condor pool).

Does Condor internally cache IP lookups beyond what the network stack does on its behalf?

Can I ask it not to do so?  (Should I?)

 

To recover from this situation, I think I need to send a condor_reconfig to all my machines. 

Unfortunately, since those machines are no longer announcing themselves to the collector, I can’t use Condor itself to do the reconfig on everything at once, and I think I’m stuck logging in everywhere and doing the reconfigs by hand.

 

Am I missing a better option?

 

Thanks!

 

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Jason Ross      Intel Corporation

Graphics Architect      FM5-79

VCG Architecture        1900 Prairie City Road

(916) 356-8964  Folsom, CA  95630