example rollback trigger

rollbacktrigger.yaml

AWSTemplateFormatVersion: "2010-09-09"
Description: "Example CloudFormation stack with rollback triggers using CloudWatch alarms"

Resources:
  MyS3Bucket:
    Type: "AWS::S3::Bucket"
    Properties:
      BucketName: !Sub "my-cloudformation-bucket-${AWS::AccountId}"

  MyAlarm:
    Type: "AWS::CloudWatch::Alarm"
    Properties:
      AlarmName: "HighCPUUsageAlarm"
      ComparisonOperator: "GreaterThanThreshold"
      EvaluationPeriods: 2
      MetricName: "CPUUtilization"
      Namespace: "AWS/EC2"
      Period: 60
      Statistic: "Average"
      Threshold: 80
      ActionsEnabled: false
      AlarmDescription: "Alarm triggers when CPU utilization exceeds 80% for two consecutive periods"
      Dimensions:
        - Name: "InstanceId"
          Value: "i-1234567890abcdef0"  # Replace with actual instance ID
      Unit: "Percent"

RollbackConfiguration:
  RollbackTriggers:
    - Arn: !GetAtt MyAlarm.Arn
      Type: "AWS::CloudWatch::Alarm"
  MonitoringTimeInMinutes: 10  # Rollback triggers will be monitored for 10 minutes