~$ aws cloudwatch put-metric-alarm \
   --alarm-name DownscalingNeeded \
   --metric-name CPUUtilization \
   --namespace AWS/EC2 \
   --dimensions Name=AutoScalingGroupName,Value=myasg \
   --alarm-actions arn:aws:autoscaling:eu-central-1:130587313947:scalingPolicy:32466f1d-5ebf-4848-8a3a-ff24c79f0f6f:autoScalingGroupName/myasg:policyName/myscaledown \
   --statistic Average \
   --period 60 \
   --threshold 25 \
   --comparison-operator LessThanThreshold \
   --evaluation-periods 1
