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

[Benson Muite]

Hi Cristóbal,

On 4/24/21 5:37 AM, 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 ?

Not sure if there is a preferred way. One method is to use cgroups on 
the login nodes. This is also integrated in SLURM and may be useful on 
the compute nodes, but for the login node, you should use cgroups 
directly. Some documentation:
https://events.static.linuxfound.org/images/stories/pdf/lfcs2012_georgiou.pdf?a
https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html
https://opensource.com/article/20/10/cgroups
https://slurm.schedmd.com/cgroups.html
> 
> many thanks in advance
> -- 
> Cristóbal A. Navarro