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On Tue, 15 Sep 2020 at 20:13, Tyler Bishop <tbishop at liquidweb.com> wrote:
>
> Hi,
>
> My issue is i have a neutron network (not discovery or cleaning) that is adding the PXE entries for the ironic pxe server and my baremetal host are rebooting into discovery upon successful deployment.
>
> I am curious how the driver implementation works for adding the PXE options to neutron-dhcp-agent configuration and if that is being done to help non flat networks where no SDN is being used?    I have several environments using Kolla-Ansible and this one seems to be the only behaving like this.  My neutron-dhcp-agent dnsmasq opt file looks like this after a host is deployed.
>
> dhcp/7d0b7e78-6506-4f4a-b524-d5c03e4ca4a8/opts cat /var/lib/neutron/dhcp/ffdf5f9b-b4ad-4a53-b154-69eb3b4a81c5/opts
> tag:subnet-57b772c1-7878-4458-8c60-cf21eac99ac2,option:dns-server,10.60.3.240,10.60.10.240,10.60.1.240
> tag:subnet-57b772c1-7878-4458-8c60-cf21eac99ac2,option:classless-static-route,169.254.169.254/32,10.60.66.2,0.0.0.0/0,10.60.66.1
> tag:subnet-57b772c1-7878-4458-8c60-cf21eac99ac2,249,169.254.169.254/32,10.60.66.2,0.0.0.0/0,10.60.66.1
> tag:subnet-57b772c1-7878-4458-8c60-cf21eac99ac2,option:router,10.60.66.1
> tag:port-08908db1-360b-4973-87c7-15049a484ac6,150,10.60.66.11
> tag:port-08908db1-360b-4973-87c7-15049a484ac6,210,/tftpboot/
> tag:port-08908db1-360b-4973-87c7-15049a484ac6,66,10.60.66.11
> tag:port-08908db1-360b-4973-87c7-15049a484ac6,67,pxelinux.0
> tag:port-08908db1-360b-4973-87c7-15049a484ac6,option:server-ip-address,10.60.66.11

Hi Tyler, Ironic adds DHCP options to the neutron port on the
provisioning network. Specifically, the boot interface in ironic is
responsible for adding DHCP options. See the PXEBaseMixin class.