What exactly needs to be done? Are we talking about introducing new Installation Media? New Operating System with a different base URL? I can give you hand with patch review and testing. Quite frankly, I am really busy with catching up with reports redesign and I’d appreciate some help with this.
This should not be difficult to add, Foreman already has a userdata endpoint, so all what is needed is perhaps making sure that PXE files are downloaded properly (I think it works already) and creating PXELinux, Grub2, iPXE and autoinstall templates.
Sadly the Nvidia DGX-OS (ubuntu based) ISO has moved to the new Live-Installer too.
Have a few hundred DGX2’s and Workstations in my research lab at work.
I’m also seeing issues with 20.04 UEFI installs via Debian-installer off the Ubuntu Archive error out during PXE. Known UEFI bug that does not affect the Live-Installer in UEFI mode.
Legacy BIOS still works great!
I am ready to assist with patching Foreman if someone tells me what exactly to do. But I am busy with my own things, I briefly tested it last year and it did not work and I was confused what on Eartch Canonical did with the installer.