I have a PXE menu configuration that I'm working on. It incorporates the RHEL6 Rescue option in order to perform repairs after booting from the network. The Rescue boot environment asks three basic questions to set itself up: Language, Keymap, and source for the rescue image.
I have the first two sorted by adding the "lang=" and "keymap=" options to the "append" line in the PXE menu:
label rescue kernel /images/rhel6-3/vmlinuz ipappend 2 append initrd=/images/rhel6-3/initrd.img LANG=en_US.UTF-8 KEYMAP=us rescue
What I'm curious about now is how to tell the rescue environment to get the rescue image from a URL. I'm unfamiliar with all of the kernel options and Rescue mode seems to be a special case anyway. I tried "URL=", but that doesn't do anything.
Is this possible?