We have roughly 12 servers running Ubuntu 8.04 and 9.10 that I'm planning on reformatting and converting to CentOS 5.5. We have a SpaceWalk server setup, so we have the capability to do a PXE boot and remotely install the new OS.
Is there a way, in Ubuntu, to configure grub to do a netboot against our SpaceWalk server? Or is there an alternate way to remotely tell an Ubuntu machine to reboot and perform a netboot?
That way I don't have to physically go into the datacenter, manually reboot the machine and manually pick PXE boot from the boot menu every time. I know about koan/cobbler, but it doesn't appear that they are available for Ubuntu.