[nova] Spawning instance that will do PXE booting

Clark Boylan cboylan at sapwetik.org
Wed Dec 1 23:51:43 UTC 2021

On Wed, Dec 1, 2021, at 2:33 PM, Thomas Goirand wrote:
> Hi,
> In order to test OCI [1] within OpenStack itself, I would need my
> instances to do PXE booting. This would be with something like this on
> the qemu command line:
> qemu-system-x86_64 -boot n
> I believe this would also mean setting-up network cards that can do PXE
> booting, like the e1000, which Qemu supports.
> If that is possible, then I would setup DHCP + tftp-hpa on another
> instance, wired on the same private network.
> Your thoughts? Is this possible?

I'm not super familiar with all the details but I believe ironic does something similar in their devstack plugin [2]. They do this so they can create fake baremetal instances that are actually VMs that ironic manages. But a similar setup will probably work for your use cases if PXE is what you are starting with.

> Cheers,
> Thomas Goirand (zigo)
> [1]
> https://salsa.debian.org/openstack-team/debian/openstack-cluster-installer

[2] https://opendev.org/openstack/ironic/src/branch/master/devstack/lib/ironic#L2109

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