AWSTemplateFormatVersion: '2010-09-09'
Description: ''
Resources:
  SnsTopicMetricFilterCloudWatchAlarm:
    Type: 'AWS::SNS::Topic'
    Properties:
      Subscription:
        - Endpoint: email@example.com
          Protocol: email
      TopicName: alarm-action
  CloudWatchAlarm:
    Type: 'AWS::CloudWatch::Alarm'
    Properties:
      AlarmName: large_ec2_changes
      AlarmDescription: A CloudWatch Alarm that triggers when changes are made to large size EC2 Instances.
      MetricName: EC2LargeInstanceEventCount
      Namespace: CloudTrailMetrics
      Statistic: Sum
      Period: '300'
      EvaluationPeriods: '1'
      Threshold: '1'
      ComparisonOperator: GreaterThanOrEqualToThreshold
      AlarmActions:
        - Ref: SnsTopicMetricFilterCloudWatchAlarm
      TreatMissingData: notBreaching
  MetricFilterCloudWatchAlarm:
    Type: 'AWS::Logs::MetricFilter'
    Properties:
      LogGroupName: ''
      FilterPattern: '{ (($.eventName = RunInstances) || ($.eventName = RebootInstances) || ($.eventName = StartInstances) || ($.eventName = StopInstances) || ($.eventName = TerminateInstances)) && (($.requestParameters.instanceType = *.32xlarge) || ($.requestParameters.instanceType = *.24xlarge) || ($.requestParameters.instanceType = *.18xlarge) || ($.requestParameters.instanceType = *.16xlarge) || ($.requestParameters.instanceType = *.12xlarge) || ($.requestParameters.instanceType = *.10xlarge) || ($.requestParameters.instanceType = *.9xlarge) || ($.requestParameters.instanceType = *.8xlarge) || ($.requestParameters.instanceType = *.4xlarge)) }'
      MetricTransformations:
        - MetricValue: '1'
          MetricNamespace: CloudTrailMetrics
          MetricName: EC2LargeInstanceEventCount
Parameters: {}
Metadata: {}
Conditions: {}