Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/improve-baremetal-pxe-deploy.

Description:

Current approach:
- crude service on the nova compute node
- baremetal/pxe.py copies image from glance, mounts it, and does file injection for hostname, network, ssh keys
- nova-baremetal-deploy-helper mounts the baremetal node's disks via iSCSI, fdisks the partitions, and dd's the updated glance image over iSCSI
- node reboots into the image

There are several concerns with this approach, especially at scale, but it is sufficient for dev/test environments.
This is implemented by: https://review.openstack.org/#/c/15830/


Desired approach:
- no new services
- glance (or bittorrent) client embedded in deploy ramdisk
- image ID supplied to deploy ramdisk
- ramdisk fdisks the local disks, pulls specified image from glance, writes to local disk, and reboot into it
- cloud-init does the rest

Specification URL (additional information):

None