RE: [condor-users] Windows Condor disappearing/reappearing ongri d

["Heinz, Michael William" <michael_heinz@xxxxxxxxx>]

Zach,

	Thanks for the response - I am seeing "invalid session" messages in
the collector log.

	I'll try your suggestion, but I am, in fact, using Condor 6.5.5, so
it looks like that problem hasn't been fixed after all. Do I need to put the
fix in all condor configs or just on the machine running the collector?

-----Original Message-----
From: Zachary Miller [mailto:zmiller@xxxxxxxxxxx] 
Sent: Friday, November 14, 2003 12:29 PM
To: condor-users@xxxxxxxxxxx
Subject: Re: [condor-users] Windows Condor disappearing/reappearing on grid


On Fri, Nov 14, 2003 at 12:13:01PM -0500, Heinz, Michael William wrote:
> No one ever responded to this problem, so I'm asking again:
> 
> I seem to be in a situation where machines disappear off the grid even 
> though they are both idle and continuing to operate. Rebooting each 
> machine in question seems to relieve the problem. More strangely, it 
> sometimes seems as if simply logging into the machine and doing a 
> "condor_status" and waiting a few minutes is all that's needed.
> 
> Does anyone have any suggestions?

it looks like you are running into a bug with sessions expiring.  i'm
guessing that if you look in your CollectorLog, you'll see a bunch of lines
saying "attempt to open invalid session".

the bug was fixed in the 6.5 series.

if you'd like to work around it, you can turn off sessions entirely if you
are not using KERBEROS, X509, 3DES, BLOWFISH, MD5, or any other security
features.  simply add:

  SEC_DEFAULT_NEGOTIATION = NEVER

to your condor_config file.  let me know if you continue to have troubles.


cheers,
-zach

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