Feature Overview

CoreOS Layering allows users to derive customized disk images for cluster nodes and update their nodes to these custom images. However, OpenShift still uses pristine images for the first boot of any machine. Customers should be allowed to use customized firstboot RHCOS images for machine installation.

This is critical to the needs of many OEMs and those working with cutting edge hardware with rapidly developing drivers.

Goals

• Allow customers to load out-of-tree device drivers required for RHCOS install. Usually NIC or storage drivers.
• It is OK for the initial phase to only apply to bare metal.