foo.yaml

heat_template_version: 2014-10-16
description: Foo
resources:
  port:
    type: OS::Neutron::Port
    properties:
      network: os-network
      security_groups:
        - default

  volume:
    type: OS::Cinder::Volume
    properties:
      image: 'Memset - Ubuntu 18.04 (2018-06-18)'
      size: 15

  scaleup_group:
    type: OS::Heat::AutoScalingGroup
    properties:
      cooldown: 60
      desired_capacity: 1
      max_size: 3
      min_size: 1
      resource:
        type: OS::Nova::Server
        properties:
          block_device_mapping:
            - device_name: vda
              delete_on_termination: true
              volume_id: { get_resource: volume }
          flavor: MSOS002
          key_name: mike
          networks:
            - port: { get_resource: port }

  scaleup_policy:
    type: OS::Heat::ScalingPolicy
    properties:
      adjustment_type: change_in_capacity
      auto_scaling_group_id: { get_resource: scaleup_group }
      cooldown: 60
      scaling_adjustment: 1

  scaledown_policy:
    type: OS::Heat::ScalingPolicy
    properties:
      adjustment_type: change_in_capacity
      auto_scaling_group_id: { get_resource: scaleup_group }
      cooldown: 60
      scaling_adjustment: -1

  cpu_alarm_high:
    type: OS::Ceilometer::Alarm
    properties:
      meter_name: cpu_util
      statistic: avg
      period: 60
      evaluation_periods: 1
      threshold: 50
      alarm_actions:
        - {get_attr: [scaleup_policy, alarm_url]}
      matching_metadata: {'metadata.user_metadata.groupname': {get_resource: 'scaleup_group'}}
      comparison_operator: gt

  cpu_alarm_low:
    type: OS::Ceilometer::Alarm
    properties:
      meter_name: cpu_util
      statistic: avg
      period: 60
      evaluation_periods: 1
      threshold: 10
      alarm_actions:
        - {get_attr: [scaledown_policy, alarm_url]}
      matching_metadata: {'metadata.user_metadata.groupname': {get_resource: 'scaleup_group'}}
      comparison_operator: lt