Anyone have a script that groks the latest supported CPU mod Rancher Users #harvester

Anyone have a script that groks the latest support...

bland-article-62755

04/15/2025, 4:14 PM

Anyone have a script that groks the latest supported CPU model from all the nodes? So you can set a cluster wide setting and not worry about what VMs can migrate where? If not I might write one.

millions-microphone-3535

04/15/2025, 7:45 PM

sounds like a good idea. fwiw, kubevirt publishes lots of info about cpu model, features etc. as node labels. is that what you are referring to?

bland-article-62755

04/15/2025, 8:06 PM

yeah, typically the supported models show up with something like...

bland-article-62755

04/15/2025, 8:08 PM

<http://cpu-model-migration.node.kubevirt.io/Skylake-Server|cpu-model-migration.node.kubevirt.io/Skylake-Server> : true

and

<http://cpu-model-migration.node.kubevirt.io/Haswell|cpu-model-migration.node.kubevirt.io/Haswell> : true

etc.

bland-article-62755

04/15/2025, 8:10 PM

So if you have a Cascade Procs:

<http://cpu-model-migration.node.kubevirt.io/Cascadelake-Server|cpu-model-migration.node.kubevirt.io/Cascadelake-Server> : true

It'd start with that then seing that not all the nodes have it, move onto

Skylake-Server

etc until it found the latest supported processor

bland-article-62755

04/15/2025, 8:11 PM

Then you could set the kubevirt setting for the cluster and ensure your vms could migrate to all the hosts.

bland-article-62755

04/15/2025, 8:13 PM

It just gets a little messy to try to find things on your own when it looks like this:

bland-article-62755

04/21/2025, 7:07 PM

If anyone wants it, here's a script for getting common CPU models from a harvester cluster and (hopefully) a best recommendation for compatibility. Requires

kubectl

access to your harvester cluster.

harvester-get-cpu-model.sh

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