[slurm-users] Cluster nodes on multiple cluster networks

[Michael Gutteridge]

I don't believe the IP address is required- if you can configure a
DNS/hosts entry differently for cloud nodes you can set:

   SlurmCtldhost = controllername

Then have "controllername" resolve to the private IP for the controller for
the on-prem cluster, the public IP for the nodes in the cloud.
Theoretically anyway- I haven't run a config like that and I'm not sure how
the controller will react to such a configuration (i.e. getting slurm
traffic on both interfaces).

If the on-prem nodes can reach the public IP address of the controller it
may be simpler to use only the public IP for the controller, but I don't
know how your routing is set up.

HTH

 - Michael



On Fri, Jan 22, 2021 at 11:26 AM Sajesh Singh <ssingh at amnh.org> wrote:

> How would I deal with the address of the head node defined in the
> slurm.conf as I have it defined as
>
>
>
> SlurmctldHost=private-hostname(private.ip.addr)
>
>
>
> The private.ip.addr address is not reachable from the cloud nodes
>
>
>
> -Sajesh-
>
>
>
> *From:* slurm-users <slurm-users-bounces at lists.schedmd.com> *On Behalf Of
> *Brian Andrus
> *Sent:* Friday, January 22, 2021 1:45 PM
> *To:* slurm-users at lists.schedmd.com
> *Subject:* Re: [slurm-users] Cluster nodes on multiple cluster networks
>
>
>
> *EXTERNAL SENDER*
>
>
>
> You would need to have a direct connect/vpn so the cloud nodes can connect
> to your head node.
>
> Brian Andrus
>
> On 1/22/2021 10:37 AM, Sajesh Singh wrote:
>
> We are looking at rolling out cloud bursting to our on-prem Slurm cluster
> and I am wondering how to deal with the slurm.conf variable SlurmctldHost.
> It is currently configured with the private cluster network address that
> the on-prem nodes use to contact it. The nodes in the cloud would contact
> the head node via its public IP address. How can I configure Slurm so that
> both IPs are recognized as the head node?
>
>
>
>
>
> -Sajesh-
>
>
>
>
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