I have setup a cloudwatch alarm for RDS "By Database Engine" for postgres for "FreeableMemory" metric and assign an alarm when the Free Memory is less than 1GB. When an alarm is raised, is it possible to get the information on which specific RDS resource/instance actually breached the alarm?.
I could specify "Per Database" metric but then I have to setup one for every instance of db I got. Is it possible to set alart for broader category like "By Database Engine" and when alarm is breached, just look at the event payload and get list of resources that actually breached the alarm?