define host { host_name control-m-1 use videoteam-host alias control-m-1 address 10.23.0.31 hostgroups video-equipment,control-group parents mrvocsw } define host { host_name control-m-2 use videoteam-host alias control-m-2 address 10.23.0.32 hostgroups video-equipment,control-group parents mrvocsw }