AWS Cloud Cost Optimization - Identifying Stale Resources Identifying Stale EBS Snapshots In this example, create a Lambda function that identifies EBS snapshots that are no longer associated with any active EC2 instance and deletes them to save on storage costs.
Description: The Lambda function fetches all EBS snapshots owned by the same account ('self') and also retrieves a list of active EC2 instances (running and stopped). For each snapshot, it checks if the associated volume (if exists) is not associated with any active instance. If it finds a stale snapshot, it deletes it, effectively optimizing storage costs.
1.Launch a ec2- instance
2.Volume also gets created with ec2-instance
3.Create a snapshot for that volume id
4.Create a Lambda function
5.Paste the code in Code section
- Click on Test to create a test event and save
7.Create policy to add permission
8.permissions to add to the policy 1 describe snapshots 2 delete snapshot 3 describe instances 4 describe volumes
9.Terminate the ec2-insance and Test the code it will delete the stale snappshot.