There is something quite satisfying about "orchestrating" virtual machines and upgrading several of them at once in less than 3 minutes of downtime with just #OpenBSD base tooling.
Such as: vmd/vmctl, qcow2 with base images, make, autoinstall, ssh, scp, tap interfaces, pf, softraid crypto(-raid1), cron, and a few small hacks.
Fully automated and tracked in version control. No complicated enterprise frameworks in sight :flan_thumbs: