This resource type represents an alarm on Amazon Elastic Compute Cloud. It extends the type OS::Ceilometer::Alarm.

The blueprint uses the core properties and extended properties, if any, from this resource type. Review and configure the applicable heat resources that apply to your configuration information.

In the blueprint designer, you can configure the properties that the following table includes. Properties are listed as either core or extended. Each type of property is located in separate sections of the heat resource that you can view in the blueprint designer. You set the core properties in the properties section and set the extended properties in the metadata section of the blueprint.

Table 1. Properties
Name Type Required Core or extended Description
alarm_actions List False Core A list of URLs to invoke when the state makes the transition to alarm.
comparison_operator String False Core Operator that is used to compare specified statistic with threshold. The following values are allowed:
  • ge
  • gt
  • eq
  • ne
  • lt
  • le
description String False Core Description for the alarm.
enabled Boolean False Core True if alarm evaluation and actions are enabled. By default, the enabled parameter is set to True.
evaluation_periods Integer False Core Number of periods to evaluate over.
insufficient_data_actions List False Core A list of URLs to invoke when the state makes the transition to insufficient-data.
matching_metadata Map False Core In addition to the meter name, the meter must match this resource metadata (key=value).
meter_name String True Core Meter name that is watched by the alarm.
name String False Core Name of alarm.
ok_actions List False Core A list of URLs to invoke when state makes the transition to OK.
period Integer False Core Period to evaluate over, in seconds.
repeat_actions Boolean True Core Set the repeat_actions parameter to False to trigger actions when the threshold is reached and the alarm's state has changed. By default, actions are called each time that the threshold is reached.
statistic String False Core Meter statistic to evaluate. The following values are allowed:
  • count
  • avg
  • sum
  • min
  • max
threshold Number True Core Threshold to evaluate against.
This resource type has no attributes.