Warewulf is a stateless and diskless container OS provisioning system

I've been using Warewulf (&co.) for provisioning bare-metal clusters for decades (back into the Perceus days between Warewulf 1 and 2), it's a solid easy-to-comprehend tool that does things in ways that are transparent and built from generic [u/li]nux tools enough that they're not hard to think about when needed, but automated enough you usually don't have to.

Definitely shows its research roots, best-tested with RHEL-alikes, reasonably well tested with Suse and Debian, and you may be in for some extra work if you need provision something else, but that pretty much covers the common cases (and it integrates with containerization tools if you need some specific environment on the nodes).

It's a nice to have when you need to spin many nodes.

Where does this fit in the Ansible + PXE boot vs Terraform vs NixOS scale? Seems to be within that space, but before the "infrastructure as code" phrase was coined.

Website: https://warewulf.org/

Docs: https://warewulf.org/docs/main/

Weird this does not make use of IPv6. I'd thought this was a given if you have tens of thousands of nodes.