Question

Can I create affinity rules for VMs in an AHV cluster?

  • 19 April 2024
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  • Adventurer
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I’m fairly new to AHV and Prism.  We’ve been running Nutanix for a few years but our hosts are running ESXi.  We’re setting up a new cluster with AHV and we’re planning to migrate everything there.  One issue we have is that some hosts have the NVIDIA GPU card in them.  In Vmware, I have affinity rules so that the VMs that use the GPU will only run on the hosts that have the GPU card.  

Can I do the same thing with AHV?  Going through KB articles, I get mixed messages. One KB article flat out says that it’s not supported.


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Userlevel 6
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Well, if you add a vGPU to the VM it will only run on a host with a GPU in it. So you dont need to create affinity rules for this. 

But if you really want to create affinity rules you can do that in Prism. Just "update” a virtual machine and pin it to a host or multiple hosts. 

 

If a VM uses a GPU, when it powers on, it will automatically check to see which host has the required GPU and power it on on that host?  

That “Set VM Host Affinity” is on a VM when you update it?  I poked around and couldn’t find it in Prism.

Userlevel 6
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If a VM uses a GPU, when it powers on, it will automatically check to see which host has the required GPU and power it on on that host?  --> Correct.

That “Set VM Host Affinity” is on a VM when you update it?  I poked around and couldn’t find it in Prism.

No, it is also there when you create it ;) (Screenshot is from prism element). 

In prism central it is only available in newer versions.

 

Ah Element. I was in Prism Central.  I see it now.  Thanks.

We’re on  version pc.2022.6.0.10. Must be time to upgrade.