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Description of problem:
The local_boot_trigger kernel boot parameter is not described in the guide, although it exist according to RHEV-H developers.

Version-Release number of selected component (if applicable):
Missing from both RHEVH 5 and 6 guides.

Additional info:
This should be used to signal cobbler/foreman/other build systems that the installation succeeded.

(04:22:39 PM) mburns: in cobbler, we did that with "local_boot_trigger=<url_to_wget>"
(04:22:39 PM) mburns: adarazs: we have a script at the end of the installation that does wget $trigger_url -O /dev/null
(04:22:39 PM) mburns: where trigger_url == the value of local_boot_trigger
(04:29:11 PM) mburns: local_boot_trigger=http://cobbler/cblr/svc/op/nopxe/system/@HOSTNAME@
(04:29:11 PM) mburns: we substitute the actual hostname for @HOSTNAME@

But consult with the devs for exact description.

Also let me know if I need to open this for 5.x too.

Yes, this is supported.

local_boot_trigger=http://url/to/someplace

It is intended to be used with pxe Servers to disable PXE after installing correctly.  We run wget on the url and expect that it will disable the host in the PXE server so next boot will be from disk.