heat_template_version: 2013-05-23
resources:
  asg:
    type: OS::Heat::AutoScalingGroup
    properties:
      max_size: 5
      min_size: 1
      resource:
        type: OS::Heat::RandomString
  scaleup_policy:
    type: OS::Heat::ScalingPolicy
    properties:
      adjustment_type: change_in_capacity
      auto_scaling_group_id: {get_resource: asg}
      cooldown: 0
      scaling_adjustment: 1
  alarm:
    type: OS::Ceilometer::Alarm
    properties:
      description: Scale-up if the average CPU > 50% for 1 minute
      meter_name: test_meter
      statistic: count
      comparison_operator: ge
      threshold: 1
      period: 60
      evaluation_periods: 1
      alarm_actions:
        - {get_attr: [scaleup_policy, alarm_url]}
      matching_metadata:
        metadata.metering.stack_id: {get_param: "OS::stack_id"}
outputs:
  asg_size:
    value: {get_attr: [asg, current_size]}