Setting up Datadog alert to monitor AWS RDS Aurora databased by percentage used. If the percentage of storage is above 80% alert. Using the following two metrics
A: aws.rds.free_local_storage
B: aws.rds.volume_bytes_used
a/b
Alert if greater than 0.8
Is this possible in Datadog using the two metrics and diving them? or is their another way of achieving this in Datadog ?