If you manage infrastructure that runs containers, you will already be familiar with the concepts of immutability and minimalism that containers bring. This kind of simplicity that can make containerization such a nice option can be extended down to the infrastructure that manages the metal of your datacenter as well.
This repo contains tooling to build immutable system images for the Nomad stack from HashiCorp. These control files can be consumed by linuxkit to produce images for public and private clouds, as well as bare metal servers. Rather than maintaining a late-binding orchestration technology like Ansible, Puppet or Chef, you simply build a new image with updates in it and perform a rolling update of the underlying infrastructure. In this way you can confidently know the state of your infrastructure at any given time since it can't be changed except during well defined lifecycle phases (rebooting).
If you want Kubernetes that's been done. This repo is about the HashiStack because it is. If you want a non-tautological answer its because the authors believe its a nicer stack to work with, a cleaner one to maintain, and one with less potential to explode if looked at wrong.
Reference deployments in AWS using terraform. This way you can have your very own Nomad cluster in a way that uses the images designed here in a standard and repeatable way.
File an issue on this repo with what you're interested in, and we'll find a task for you to work on.