[slurm-users] How to deal with user running stuff in frontend node?
pedmon at cfa.harvard.edu
Thu Feb 15 08:27:28 MST 2018
We have an automated script, pcull which goes through and finds abusing
On 02/15/2018 10:25 AM, Patrick Goetz wrote:
> The simple solution is to tell people not to do this -- that's what I
> do. And if that doesn't work threaten to kick them off the system.
> On 02/15/2018 09:11 AM, Manuel Rodríguez Pascual wrote:
>> Hi all,
>> Although this is not strictly related to Slurm, maybe you can
>> recommend me some actions to deal with a particular user.
>> On our small cluster, currently there are no limits to run
>> applications in the frontend. This is sometimes really useful for
>> some users, for example to have scripts monitoring the execution of
>> jobs and taking decisions depending on the partial results.
>> However, we have this user that keeps abusing this system: when the
>> job queue is long and there is a significant time wait, he sometimes
>> runs his jobs on the frontend, resulting on a CPU load of 100% and
>> some delays on using it for the things it is supposed to serve (user
>> login, monitoring and so).
>> Have you faced the same issue? Is there any solution? I am thinking
>> about using ulimit to limit the execution time of this jobs in the
>> frontend to 5 minutes or so. This however does not look so elegant as
>> other users can perform the sabe abuse on the future, and he should
>> also be able to run low cpu-consuming jobs for a longer period.
>> However I am not an experienced sysadmin so I am completely open to
>> suggestions or different ways of facing this issue.
>> Any thoughts?
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