You may still have some bare metal servers lying around, freed by the heavy use of public clouds. But don’t throw them away yet, tooling exist to offer almost as much agility as virtual machine provisionning. Tools like Foreman, Cobbler, Razor, MAAS or OpenStack Ironic fills that gap. Today we’ll look at matchbox from CoreOS, it has a pretty name now, it used to be called coreos-baremetal and bootcfg. matchbox offers a HTTP and gRPC service which will help to easily build out CoreOS clusters out of your servers.