5 Hidden Cost Leaks in AWS (And How to Fix Them in 10 Minutes) 📉💰
Unattached EBS volumes, idle NAT Gateways, and forgotten Elastic IPs can silently eat up your AWS budget. Learn how to identify and clean up these common resources to keep your account 100% cost-optimized.
Hey fellow Builders! 👋
Whether you are using AWS promotional credits or your personal credit card, nobody wants to waste money on resources they aren't using.
Here are 5 common hidden cost leaks that almost every AWS beginner runs into—and how to fix them in minutes! 🛠️
1. Unattached EBS Volumes (Orphaned Storage) 💾
When you terminate an EC2 instance, its attached EBS volume doesn't always delete automatically if the "Delete on Termination" flag was unchecked.
- The Fix: Go to EC2 Console > Volumes. Filter by state:
Available. If it's not attached to a running instance, create a snapshot if needed, then Delete Volume.
2. Idle Elastic IP Addresses (EIPs) 🌐
AWS allows you to allocate static IPv4 addresses, but charges you an hourly fee if the IP is not associated with a running EC2 instance!
- The Fix: Go to EC2 Console > Elastic IPs. Look for addresses without an associated Instance ID and click Release Elastic IP addresses.
3. Idle NAT Gateways 💸
NAT Gateways carry a fixed hourly provisioned charge (~$0.045/hr) regardless of whether data is flowing through them.
- The Fix: In non-production or learning environments, consider using SSM Session Manager or deleting the NAT Gateway when you finish your lab session.
4. Forgotten CloudWatch Log Groups 📋
CloudWatch logs store application and lambda data indefinitely by default, which slowly accumulates storage costs over time.
- The Fix: Go to CloudWatch Console > Log groups. Select your log groups and set the Retention setting to 3 or 7 days instead of "Never Expire".
5. Old S3 Bucket Versions 📦
If you enable Versioning on S3 buckets, deleting a file creates a delete marker while keeping the old version stored (and billed!).
- The Fix: Set up an S3 Lifecycle Rule to permanently expire non-current object versions after 7 days.
💬 What's Your Favorite Cost Hack?
Have you ever found a forgotten resource running on your account? Drop a comment below with your favorite cost-saving tip!
If this checklist saved you some credits, smash the ❤️ Like button so more builders can protect their budgets! 🚀
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