AWS RDS cloudwatch alarms

Question

I am trying to create an alarm for "FreeStorageSpace" metric and units it takes is Bytes. What, however, I am trying to do is create an alarm using percentages (send an alarm is FreeStorageSpace < 10%) and not hardcode values. How can I create a CFT for that and reuse it for instances having different storage values.

Any help is appreciated.

Thanks

Answer 1

You can not use % value while creating the FreeStorageSpace alarm in CloudWatch . Also, the alarms in AWS are on per instance basis. You can not create a generic alarm for multiple instances. Hence, you may use numeric value for defining the alarm.