I do the same in Proxmox VMs, in my homelab, which is… fine. I was talking more about native support, manageable via an API or something.

Say I need to increase the number of nodes in my cluster. I spin up a new VM using the template I have, adjust the network configuration, update the packages, add it to the cluster. Oh, maybe I should also do an update on all of them while I’m there, because now the new machine runs a different docker version. I have some Ansible and bash scripts that automates most of this. It works for my homelab.

At work however, I have a handful of clusters, with dozens of nodes. The method above can become tedious fast and it’s prone to human errors. We use external Kubernetes as a service platforms (think DOKS, EKS, etc), who have Terraform providers available. So I open my Terraform config and increase the number of nodes in one of my pre-production clusters from 9 to 11. I also change the version from 1.32 to 1.33. I then push my changes to a new merge request, my Gitlab CI spins up, who calls Atlantis to run a terraform plan, I check the results and ask it to apply. It takes 2 minutes. I would love to see this work with Proxmox.