Re: [HTCondor-users] IS_OWNER not stopping jobs from running

["Beyer, Christoph" <christoph.beyer@xxxxxxx>]

Hi Andrew,

looking closer the IS_OWNER state is meant to be for the machine to signal that it is interactivley used by 'the owner' hence I suspect the state will be changed from what you set it at the beginning by condor itself as it will include sensing of keyboard activity etc. 

We only use dedicated hardware and don't use/come across  the IS_OWNER classadd ... 

Sorry for not being very helpful maybe someone else knows more ! 

Best

christoph

--
Christoph Beyer
DESY Hamburg
IT-Department

Notkestr. 85
Building 02b, Room 009
22607 Hamburg

phone:+49-(0)40-8998-2317
mail: christoph.beyer@xxxxxxx

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Von: "Andrew Pickford" <andrewp@xxxxxxxxx>
An: "htcondor-users" <htcondor-users@xxxxxxxxxxx>
Gesendet: Donnerstag, 13. November 2025 11:32:22
Betreff: Re: [HTCondor-users] IS_OWNER not stopping jobs from running

Hi Christoph,

Tried:

condor_status -startd slot1@xxxxxxxxxxxxxxxxxxxxx -af is_owner but the output is empty. Should the option be -slot instead of -startd? In that case I get: root@wn-choc-043:/etc/condor/config.d# condor_status -slot slot1@xxxxxxxxxxxxxxxxxxxxx -af is_owner undefined I was looking at using START for this sort of control as well. IS_OWNER has the disadvantage of not having access to job classad values only the machine classad values, but the advantage that the state condor_status shows goes from unclaimed to owner. While using just START leaves the machine in the unclaimed state. I was thinking of using IS_OWNER for automatic execute node health checks that something like icinga could then check for nodes in the owner state to flag errors. Cheers, Andrew

On 13/11/2025 10:46, Beyer, Christoph wrote:

Hi,

not sure about the IS_OWNER option but the manual quite confirm what you say it should do :) 

What does 

condor_status -startd slot1@xxxxxxxxxxxxxxxxxxxxx -af is_owner

say ? 

I think the more common option to stop jobs from starting on an EP is to add a custom variable to the START _expression_ e.g.: 

START = $(START) && START_JOBS == true

Then declare START_JOBS as a startd variable and make it remote settable, set the default in the config ...

Best
christoph

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