AWS::CloudWatch::Alarm

• Alarm triggering based on a metric
• Use the command aws cloudwatch put-metric-alarm to create it

Alarm states

• OK
• INSUFFICIENT_DATA
• ALARM

Properties

• https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-cloudwatch-alarm.html

Type: AWS::CloudWatch::Alarm
Properties:
  ActionsEnabled: Boolean
  AlarmActions:
    - String
  AlarmDescription: String
  AlarmName: String
  ComparisonOperator: String
  DatapointsToAlarm: Integer
  Dimensions:
    - Dimension
  EvaluateLowSampleCountPercentile: String
  EvaluationPeriods: Integer
  ExtendedStatistic: String
  InsufficientDataActions:
    - String
  MetricName: String
  Metrics:
    - MetricDataQuery
  Namespace: String
  OKActions:
    - String
  Period: Integer
  Statistic: String
  Tags:
    - Tag
  Threshold: Number
  ThresholdMetricId: String
  TreatMissingData: String
  Unit: String

AlarmActions

• Notification (SNS)
• Lambda action
• Auto Scaling action
• EC2 action
• Systems Manager action
• Investigation action

Period

• Time range to analyze