[slurm-users] SLURM: reconfig

[Ole Holm Nielsen]

On 5/6/22 10:26, Mark Dixon wrote:
> On Thu, 5 May 2022, Ole Holm Nielsen wrote:
> ...
>> You're right, probably the correct order for Configless must be:
>>
>> * stop slurmctld
>> * edit slurm.conf etc.
>> * start slurmctld
>> * restart the slurmd nodes to pick up new slurm.conf
>>
>> See also slides 29-34 in
>> https://slurm.schedmd.com/SLUG21/Field_Notes_5.pdf from the Slurm
>> publications site https://slurm.schedmd.com/publications.html
>>
>> Less-Safe, but usually okay, procedure:
>> 1. Change configs
>> 2. Restart slurmctld
>> 3. Restart all slurmd processes really quickly
> 
> 
> Sure, I'd seen that: but it's not exactly ideal, is it?

Not ideal, but there are Slurm design reasons (node bitmaps) that 
necessitate restarting slurmd's when nodes are added or removed.

> Roll on dynamic node adding and removing...

Yes, see slide 37 in https://slurm.schedmd.com/SLUG21/Roadmap.pdf from the 
Slurm publications site https://slurm.schedmd.com/publications.html


/Ole