aws-terminate-untagged-instances

A simple python serverless lambda function which would terminate all EC2 instances which don’t follow a tagging criteria. (A free tier AWS account would work).

AWS Services used

• SES
• EC2
• Lambda
• DynamoDB
• EventBridge

Deployment Steps:

• Create a lambda function terminate-untagged-instances
• Upload both .py files in the function

Configuration

• Go to Configuration > General Configuration > Increase timeout to 1 min.

• Go to Configuration > Permissions > Execution Role

  • Add below policies to the role

• Create a dynamoDB table terminate-untagged-instances with partition key - instanceId (String)

• Create a EventBridge rule to schedule the lambda function every 1 hour.