[slurm-users] RES: Change something in user's script using job_submit.lua plugin

[Ole Holm Nielsen]

Hi Paulo,

Maybe what you see is due to a bug then?  You might try to update Slurm 
to see if has been fixed.

You should not use the Slurm RPMs from EPEL - I think offering these 
RPMs was a mistake.

Anyway you ought to upgrade to the latest Slurm 23.02.6 since a serious 
security issue was fixed a couple of weeks ago.  Older Slurm versions 
are all affected!  Perhaps this Wiki guide can help you upgrade to the 
latest RPM: https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_installation/

/Ole


On 27-10-2023 13:13, Paulo Jose Braga Estrela wrote:
> Yes, the script is running and changing other fields like comment, partition, account is working fine. The only problem seems to be the script field of job_rec. I'm using Slurm 20.11.9 from EPEL repository for RHEL 8. Thank you for sharing your Wiki. I've accessed it before. It's really useful for HPC engineers.
> 
> Best regards,
> 
> 
> PÚBLICA
> -----Mensagem original-----
> De: slurm-users <slurm-users-bounces at lists.schedmd.com> Em nome de Ole Holm Nielsen
> Enviada em: sexta-feira, 27 de outubro de 2023 03:31
> Para: slurm-users at lists.schedmd.com
> Assunto: Re: [slurm-users] Change something in user's script using job_submit.lua plugin
> 
> Hi Paulo,
> 
> Which Slurm version do you have, and did you set this in slurm.conf:
> JobSubmitPlugins=lua ?
> 
> Perhaps you may find some useful information in this Wiki page:
> https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_configuration/#job-submit-plugins
> 
> /Ole
> 
> 
> On 26-10-2023 19:07, Paulo Jose Braga Estrela wrote:
>> Is it possible to change something in user’s sbatch script by using a
>> job_submit plugin? To be more specific, using Lua job_submit plugin.
>>
>> I’m trying to do the following in job_submit.lua when a user changes
>> job’s partition to “cloud” partition, but the script got executed
>> without modification.
>>
>> function slurm_job_modify(job_desc, job_rec, part_list, modify_uid)
>>
>>           if job_desc.partition == "cloud" then
>>
>>                   slurm.log_info("slurm_job_modify: Bursting job %u
>> from uid %u to the cloud...",job_rec.job_id,modify_uid)
>>
>>                   script = job_rec.script
>>
>>                   slurm.log_info("Script BEFORE change: %s",script)
>>
>>                   -- changing user command to another command
>>
>>                   script = string.gsub(script,"local command","cloud
>> command")
>>
>>                   slurm.log_info("Script AFTER change %s",script)
>>
>>                   -- The script variable is really changed
>>
>>                   job_rec.script = script
>>
>>                   slurm.log_info("Job RECORD SCRIPT %s",job_rec.script)
>>
>>                   -- The job record also got changed, but the EXECUTED
>> script isn’t changed at all. It runs without modification.
>>
>>           end
>>
>>           return slurm.SUCCESS
>>
>> end
>>
>> *PAULO ESTRELA*