Nagios Support Forum

I've got a service group containing all disk space monitors and I want a specific contact group to receive alerts for these only. Is it possible to assign a contact group to a service group?

Yes, it is possible. You can create a new contact group under the Nagios Core Config Manager and assign "Members" (individual contacts) or "Group members" (other "sub" contact groups) to it.

I'm not sure if I'm being clear, I have a contact group "Disk space users" and a service group "Disk space monitors" I want notifications for anything in "Disk space monitors" to go to "Disk space users"

No, you cannot do it that specific way unfortunately. The typical solution to this problem is to create a service template that has your contact info filled in, and then set all of the services to use that template.