in my environment I have several servers in different host groups. All Servers in one Hostgroup do the same and can backup each other. If one server of a hostgroup isn’t availabe anymore, I really don’t care that much as in: I don’t need to be notified on my pager. Especially when the error occured at nighttime. When there is one server down, there is enough backup-power to bring that server alive again during the folowing working day.
However, if the second (third, fourth, …) Server goes down, there could be a Problem of higher severity and in that case I want to be notified indeed. The Same thing can be thought for services as well, of course.
Summary to make it clearer:
-> Server A, Server B, Server C
Server A online, Server B offline, Server C online: No Notification
Server A offline, Server B offline, Server C online: Notify
Would that be possible with the current Icinga-Version? What I’m thinking of is a possibility of setting up rules for notifications or something like that…