Two patches, pushed to my github account:
https://github.com/jimi1283/cobbler/commits/esxi-improvements
The ESXI5 patch requires the gpxe patch, since the only sane way to
add the support for it to cobbler was via the gpxe process documented
in the VMware build guide. This allows all of the files to be served
via httpd, otherwise you have to copy the entire ISO contents to a
TFTP directory (which required some ugly hacking in cobbler).
The one caveat about the gpxe process is that you must manually copy
the undionly.kpxe file to your tftp directory. Newer distros package
the etherboot files, otherwise you'll have to download the files from
http://etherboot.org/wiki/download and build the file yourself (it's a
fairly painless process). Another TODO is to make the same setup
changes for DNSMASQ, right now this only supports ISC DHCPD.
There is a new setting called enable_gpxe, which is used currently
only when new items are created. There is also a new field for systems
and profiles by the same name, which sets it on a per-object basis.
This isn't being used for profiles yet, nor will it work on systems
without an interface and MAC specified, but when enabled on a system
with a MAC it will create an entry in dhcpd.conf that is configured to
chain load the undionly.kpxe file. I plan on adding support for
generic profiles and systems without a MAC, but it might be a
some-what convoluted process and I'm trying to work out the best way
to do it (currently it'd involve chain loading gpxe, and then
detecting that you don't want to use gpxe and chain loading back into
the old pxelinux.0 file).
I plan on merging these into master in the near future unless people
have major issues during testing. Enjoy!