[slurm-users] What is an easy way to prevent users run programs on the master/login node.

[Ole Holm Nielsen]

On 24-04-2021 04:37, Cristóbal Navarro wrote:
> Hi Community,
> I have a set of users still not so familiar with slurm, and yesterday 
> they bypassed srun/sbatch and just ran their CPU program directly on the 
> head/login node thinking it would still run on the compute node. I am 
> aware that I will need to teach them some basic usage, but in the 
> meanwhile, how have you solved this type of user-behavior problem? Is 
> there a preffered way to restrict the master/login resources, or 
> actions,  to the regular users ?

We restrict user limits in /etc/security/limits.conf so users can't run 
very long or very big tasks on the login nodes:

# Normal user limits
*               hard    cpu             20
*               hard    rss             50000000
*               hard    data            50000000
*               soft    stack           40000000
*               hard    stack           50000000
*               hard    nproc           250

/Ole