Description of problem: Upstream ironic has merged basic support (in Rocky) for an additional deployment interface, primarily geared at large scale operators and the scientific community as their use cases of rapid turnaround and disk-less nodes, since disk are often viewed as a additional possible failure point at that scale and operating class. This interface does have a number of limitations[1] from standard interface usage, but we should test and support basic usage for operators that seek ephemeral nodes to be deployed. [1] https://specs.openstack.org/openstack/ironic-specs/specs/not-implemented/boot-from-ramdisk.html
Discussed with Ramon and this will be treated as a TechPreview item.
Code complete. Can be enabled via modifying IronicEnabledDeployInterfaces. Should probably be enabled by default when leaving TechPreview.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2019:2811