How to install Check_MK into an exisiting OMD site
==================================================
This feature is experimental: You can install Check_MK
into an existing OMD site by unpacking the installation
tarball and running ./setup --yes as OMD site user.
This will install Check_MK into the site's local/
filesystem hierarchy.

After that relogin (to make sure the shell really 
executes the new cmk command) and do a cmk -U in order
to re-create your Nagios configuration.

Uninstalling must be done manually. This can be
done with the following commands provided that no
other files you need are lying around below local!
Use at your own risk!

omd stop
cd ~
find local -type f | xargs rm 
cd etc/apache/conf.d
ln -sfn ../../check_mk/apache.conf check_mk.conf
cd ~/etc/nagios/nagios.d
ln -sfn ../../mk-livestatus/nagios.cfg mk-livestatus.cfg 
rm -f ~/etc/check_mk/apache-local.conf 
rm -f ~/etc/mk-livestatus/nagios-local.cfg 
cmk -U
omd start