[condor-users] DC_AUTHENTICATE: attempt to open invalid session

[Alexander Klyubin <A.Kljubin@xxxxxxxxxxx>]

Hello!

I'm running a Condor pool of 6.5.3 (Linux) and 6.5.4 (Windows) machines. 
My collector machine is a Linux one. As suggested in Condor 
documentation the machine's firewall allows connections to ports 9614 
and 9618 (TCP/UDP). Moreover, as this machine is also used as a worker 
and submission machine it has a range of ports open which are used by 
shadow processes. LOWPORT and HIGHPORT settings specify this range of 
port in the machine's configuration file (LOWPORT=29000, HIGHPORT=40000).

Linux machines (Condor 6.5.3) work fine in the pool. Windows machines 
(Condor 6.5.4) exhibit strange behavior. When a job is to be removed or 
preempted on a Windows machine it takes quite a lot of time for this to 
happen (e.g. 15 minutes). I think there's something wrong with the 
communication between these Windows machines and the collector machine. 
My best guess is that the job gets killed, but collector machine is not 
aware of that for quite some time.

I also sometimes get strange entries in Master log on the collector 
machine. Here's an example of such entry:

DC_AUTHENTICATE: attempt to open invalid session 
klyubin:6699:1062459284:280, failing.

Has anybody noticed similar behavior?

Best Regards,
Alexander Klyubin

Condor Support Information:
http://www.cs.wisc.edu/condor/condor-support/
To Unsubscribe, send mail to majordomo@xxxxxxxxxxx with
unsubscribe condor-users <your_email_address>