Many of you probably have completed or are contemplating Green-IT projects with the goal to power off idle or unneeded systems when demand for computer resources is low:
How you did handle this situation in your system monitoring? I'm especially interested in solutions for Nagios.
One idea is to schedule downtime in Nagios for the poweroff hosts. However, the drawback of this solution is that the hosts would still be listed in the 'Problems' view of the Nagios web interfaces. Is there a better solution without this "pollution" (i.e. were the 'Problems' view only shows real problems that require maintenance from a system administrator).
A clean solution would be a new 'Green-IT poweroff' host state. But AFAIK this does not exist, does it? Do you have any other recommendations or solutions? What's the best way to monitor a dynamic IT environment?