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

AlarmActions

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

Period

• Time range to analyze