Re: [HTCondor-users] Running a script on job start as root

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

Hi,

I thought Condor does change to the job-owners identity whenever it is possible but usually keeps the abiltity to switch to root when needed ? 

Not sure if that is also the case with the jobwrapper but a lot of processes switch from job-owner to root and back in the process ... 

Did you make sure it is not the case in the job-wrapper ?

Best
christoph



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Christoph Beyer
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----- UrsprÃngliche Mail -----
Von: "Max Fischer, SCC" <max.fischer@xxxxxxx>
An: "HTCondor-Users Mail List" <htcondor-users@xxxxxxxxxxx>
Gesendet: Freitag, 15. MÃrz 2024 10:55:56
Betreff: Re: [HTCondor-users] Running a script on job start as root

Hi Philippe,

Good thinking, but it looks like all these hooks also run as the user of the job. :/

Cheers,
Max

> On 14. Mar 2024, at 16:46, Philippe Grassia <pgrassia@xxxxxxxxxxx> wrote:
> 
> seems like a job for https://htcondor.readthedocs.io/en/lts/admin-manual/hooks.html#job-hooks-that-modify-and-monitor-execution
> 
> 
> On 3/14/24 7:54 AM, Fischer, Max (SCC) wrote:
>> Hi all,
>> 
>> We want to make some adjustments on each job start that require root (for a start, fiddle with cgroups cfs_quota_us). However, the USER_JOB_WRAPPER already runs as the user. We donât want to let the user run the adjustment program, so USER_JOB_WRAPPER  with sudo/setuid and friends is out of the question, too.
>> 
>> Is there any way to trigger a script as condor/root right when a job starts?
>> 
>> Cheers,
>> Max
>> 
>> 
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