run slurmd -V
This will give you the version

On Sun, Sep 21, 2025, 7:57 AM Dhumal, Dr. Nilesh via slurm-users <
[email protected]> wrote:

> Fixed the firewall issue.
> Now error is
> error: Node fgcu-compute04 appears to have a different slurm.
>
>
>
>
> *Nilesh Dhumal*
>
> Associate Professor of Chemistry,
>
>  http://faculty.fgcu.edu/ndhumal/
>
> Coordinator, FGCU Computational Facility,
>
> https://www.fgcu.edu/cas/facultyresources/computationalfacility/
> SH-430; Department of Chemistry and Physics
> Florida Gulf Coast University
> 10501 FGCU Boulevard South
> <https://www.google.com/maps/search/10501+FGCU+Boulevard+South+%0D%0AFort+Myers,+FL+33965-6565?entry=gmail&source=g>
> Fort Myers, FL 33965-6565
> <https://www.google.com/maps/search/10501+FGCU+Boulevard+South+%0D%0AFort+Myers,+FL+33965-6565?entry=gmail&source=g>
> Phone: (239) 745-4394
> Email: [email protected]
>
>
> ------------------------------
> *From:* Renfro, Michael <[email protected]>
> *Sent:* Saturday, September 20, 2025 12:21 PM
> *To:* Dhumal, Dr. Nilesh <[email protected]>; Slurm User Community List <
> [email protected]>
> *Subject:* Re: Compute node not responding
>
>
>    *External Email*: Do not click links or attachments unless you
> recognize the sender and know the content is safe.
>
> Level II: Internal
>
> slurmdbd is not a requirement to get things started [1], but you'll
> probably want it later.
>
> It’s possible you’ve got host-based firewall rules on either system that
> are blocking communication. If you’re using firewalld, ufw, or something
> similar, stop their services, restart the slurmd and slurmctld services,
> and see if that helps.
>
> [1] https://slurm.schedmd.com/quickstart_admin.html#dbd
>
>
>
> * Level II: Internal From: *Dhumal, Dr. Nilesh via slurm-users <
> [email protected]>
> *Date: *Saturday, September 20, 2025 at 11:02 AM
> *To: *Slurm User Community List <[email protected]>
> *Subject: *[slurm-users] Compute node not responding
>
> *External Email Warning*
>
> *This email originated from outside the university. Please use caution
> when opening attachments, clicking links, or responding to requests.*
> ------------------------------
> Hello,
>
> Recently, we installed slum 25 on our cluster. We are not monitoring the
> user's account. We didn't configure the sql database on the head node. We
> are running slurmcld on head node and slumd on the compute node.
> We are getting the following error
> Head node: compute node not responding.
> Compute node:
> 2025-09-19T15:30:23.461] error: Unable to register: Unable to contact
> slurm controller (connect failure)
>
> Do we need to run slumdbd on the head node?
> I checked the network connection by pinging the compute node from the head
> node.
> Do you have any suggestions to resolve this issue?
>
> Thanks
> Nilesh
>
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