ironic/releasenotes/notes/netboot-deprecation-fe5751a47df2d0b7.yaml
Dmitry Tantsur 5a9dd8b092 Deprecate instance network boot
It's insecure and not very popular. See this post for details:
http://lists.openstack.org/pipermail/openstack-discuss/2021-December/026224.html

Change-Id: I9a2df47bb8c08cc991b3c615a9eb533aba3171f4
2022-02-23 12:15:33 +01:00

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YAML

---
deprecations:
- |
Booting final instances via network (as opposed to via a local bootloader)
is now deprecated, except for the cases of booting from volume or the
ramdisk deploy interface.
Network boot for whole disk images only works reliable for legacy (BIOS)
boot. In case of partition images, there is no way to update the kernel,
which makes this approach insecure.
Users of partition images must ensure that they either contain the
``grub-install`` binary, enough EFI artifacts to boot the operating
system or a legacy boot partition.