Question

How can you create a CloudWatch Alarm using AWS CloudFormation?

Answer 1

Here is the code.

Resources:
  MyAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: "Alarm for high CPU utilization"
      Namespace: "AWS/EC2"
      MetricName: "CPUUtilization"
      Dimensions:
        - Name: "InstanceId"
          Value: "i-1234567890abcdef0"
      Statistic: Average
      Period: 300
      EvaluationPeriods: 1
      Threshold: 90
      ComparisonOperator: GreaterThanThreshold
      AlarmActions:
        - "arn:aws:sns:us-east-1:123456789012:MyTopic"