How to install CoreOS on an OVH Kimsufi low-end dedicated server

Wouldn’t it be cool to build a bare-metal high availability cluster using CoreOS and a handful of DDoS-protected, €5/month Kimsufi servers from OVH? Here’s how to install CoreOS on a Kimsufi server. At the time of this writing, OVH is not providing a CoreOS installation template for the Kimsufi servers. Since there is no virtual KVM console available for …