metadata:
 version: 2
 type: definition
 name: definition_template
 description: A template that contains only definitions
definitions:
 entities:
  - entity:
     category: ALARM
     type: nagios
     name: High memory consumption
     template_id: alarm
  - entity:
     category: RESOURCE
     type: nova.host
     template_id: resource
 relationships:
  - relationship:
     source: alarm
     target: resource
     relationship_type: on
     template_id : alarm_on_host
