Day 07 AWS Cost Killer | Automatically Detect & Track Idle EBS Volumes Using Lambda + EventBridge

In real AWS environments, unused resources don’t scream for attention — they silently burn money.

Old EBS volumes, stopped instances, unused snapshots… all of them slowly increase your monthly bill.

In this video, I show you a real production-style automation*to detect idle (zombie) AWS resources*and track them automatically — without manual audits.

This is not theory.
This is how cloud teams actually handle cost hygiene.

🔥 What You’ll Build in This Demo

An event-driven cleanup detection system*that:

Detects idle EBS volumes
Stores idle resource data in DynamoDB
Sends alerts using SNS
Runs automatically on a schedule
Requires zero manual intervention

Perfect for DevOps engineers, Cloud engineers, and cost optimization tasks.

🧱 Architecture Overview

```
EventBridge (Scheduled)
↓
AWS Lambda
↓
EC2 / EBS Scan
↓
DynamoDB (ZombieResourceTracker)
↓
SNS (Email Notification)
```
🛠️ Step-by-Step Phases

# Phase 1 – Prepare Test Resources

Create an idle EBS volume
Create DynamoDB table
`ZombieResourceTracker`
Create SNS topic for notifications

# Phase 2 – IAM Role for Lambda

Attach required permissions:

AWSLambdaBasicExecutionRole
AmazonSNSFullAccess
AmazonDynamoDBFullAccess
AmazonEC2FullAccess

# Phase 3 – Lambda Function

Create Lambda function
Add environment variables:

`TABLE_NAME`
`SNS_TOPIC_ARN`
Lambda scans for idle EBS volumes and records findings

# Phase 4 – EventBridge Automation

Create a scheduled EventBridge rule
Trigger Lambda automatically (daily / hourly)

🎯 Why This Matters in Real Projects

Cloud bills grow silently
Manual audits don’t scale
Cost optimization is a core DevOps responsibility
This setup gives you audit evidence + alerts + automation

⚠️ Production Note

Always validate before deleting resources.
This demo focuses on detection and reporting, not blind deletion.

📌 Resources & Links

🔗 GitHub
[https://github.com/saikiranpi/mastering-lambda

💼 LinkedIn
[https://www.linkedin.com/in/saikiranpinapathruni/]

✍️ Medium
[https://medium.com/@pinapathrunisaikiran]

📞 Book 1:1 Call
[https://topmate.io/pinapathruni_saikiran]

#aws
#devops
#cloudengineering
#costoptimization
#awslambda
#eventbridge
#dynamodb
#SNSTopics
#cloudautomation
#finops
#serverlesscomputing
#realtimeprojects

Видео Day 07 AWS Cost Killer | Automatically Detect & Track Idle EBS Volumes Using Lambda + EventBridge канала Saikiran Pinapathruni