Howtoforge published a tutorial about creating Cloudwatch alarms for RDS (MySQL) on AWS.
How to create Cloudwatch alarms for RDS (MySQL) on AWS
Monitoring your RDS instances is very important, and the same applies to other resources. In this article, we will create a simple alarm for an RDS MySQL instance which will check for free storage space on the instance. There are different metrics too which can be used to create alarms, click here to see the list of available metrics for RDS instances. The "FreeStorageSpace" metric checks for the storage space available on the instance and depending upon the condition specified the alarm gets triggered and sends notifications to SNS Endpoint. The "FreeStorageSpace" metric accepts the value in bytes and not percent.
