Question

A SysOps administrator needs to automatically delete manual Amazon RDS snapshots that are older than 30 days to control storage costs. The cleanup must run every day at 02:00 UTC without any manual intervention, and it should invoke a Lambda function that lists and removes the expired snapshots. Which approach meets these requirements with the least operational overhead?

Accepted Answer

Create an Amazon EventBridge rule with a scheduled cron expression that targets the Lambda function.

Answer

Configure a CloudWatch alarm on the RDS FreeStorageSpace metric to trigger the Lambda function daily.

Answer

Create an EventBridge rule that matches RDS snapshot-creation events and targets the Lambda function.

Answer

Enable an RDS event subscription that sends a daily SNS notification to invoke the Lambda function.