Nix is the best configuration management tool. Declarative, programmable, version controlled machine configs, what more could you want?
Proxmox
Thrice a day would Talos stride around the island; his brazen feet were tireless. - The Story of Perseus
Ordering LetsEncrypt certificates for your Proxmox servers is almost too easy, no more self-signed certificates!
I recently experimented automating VM creation across my Proxmox cluster. I tested out several tools before finally settling on Terraform and cloning from a Proxmox “template”.