define host{
  	host_name 		      	  	linux-server-01
         hostgroups 			linux-servers
         alias Linux 			Server 01
         address  				172.16.100.25
         check_command 			check-host-alive
         check_interval 		5
         retry_interval 		1
         max_check_attempts 	5 
         check_period 			24x7
         contact_groups 		linux-server-admins
         notification_interval 	30
         notification_period 	24x7  
         notification_options 	d,u,r
}   
