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<p class="MsoNormal">Thank you for the recommendation. Will try that out. Unfortunately the on-prem nodes cannot reach the head node via the public IP
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<p class="MsoNormal">-Sajesh-<o:p></o:p></p>
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<p class="MsoNormal"><b>From:</b> slurm-users <slurm-users-bounces@lists.schedmd.com>
<b>On Behalf Of </b>Michael Gutteridge<br>
<b>Sent:</b> Friday, January 22, 2021 3:18 PM<br>
<b>To:</b> Slurm User Community List <slurm-users@lists.schedmd.com><br>
<b>Subject:</b> Re: [slurm-users] Cluster nodes on multiple cluster networks<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">I don't believe the IP address is required- if you can configure a DNS/hosts entry differently for cloud nodes you can set:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Courier New""> SlurmCtldhost = controllername<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">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).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">HTH<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Courier New""> - Michael<o:p></o:p></span></p>
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<p class="MsoNormal">On Fri, Jan 22, 2021 at 11:26 AM Sajesh Singh <<a href="mailto:ssingh@amnh.org">ssingh@amnh.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">How would I deal with the address of the head node defined in the slurm.conf as I have it defined as
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">SlurmctldHost=private-hostname(private.ip.addr)<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">The private.ip.addr address is not reachable from the cloud nodes<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-Sajesh-
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> slurm-users <<a href="mailto:slurm-users-bounces@lists.schedmd.com" target="_blank">slurm-users-bounces@lists.schedmd.com</a>>
<b>On Behalf Of </b>Brian Andrus<br>
<b>Sent:</b> Friday, January 22, 2021 1:45 PM<br>
<b>To:</b> <a href="mailto:slurm-users@lists.schedmd.com" target="_blank">slurm-users@lists.schedmd.com</a><br>
<b>Subject:</b> Re: [slurm-users] Cluster nodes on multiple cluster networks<o:p></o:p></p>
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<b><span style="font-size:10.0pt;color:black">EXTERNAL SENDER</span></b><o:p></o:p></p>
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<p>You would need to have a direct connect/vpn so the cloud nodes can connect to your head node.<o:p></o:p></p>
<p>Brian Andrus<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On 1/22/2021 10:37 AM, Sajesh Singh wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">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?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-Sajesh-<o:p></o:p></p>
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