Automating Cloud Cost Optimization: How to Automatically Clean Up Idle AWS Resources

说明与用途

使用 EventBridge、Lambda 和 SSM 的自动化流程，每周扫描并清理未使用的 AWS 资源（EBS 卷、弹性 IP），通过快照备份后删除，降低成本并提升安全性。

问题

Idle AWS resources such as unattached EBS volumes, obsolete EC2 instances, and abandoned Elastic IPs consume budget without providing value.

结果

Weekly automated cleanup of idle EBS volumes and Elastic IPs, with snapshot safety and optional dry‑run logging, cuts unnecessary cloud spend and reduces attack surface.

工作流

• Schedule EventBridge cron job every Friday at 6:00 PM
• Trigger Lambda function to scan for unattached EBS volumes and idle Elastic IPs
• For each idle resource, invoke SSM Automation Document to snapshot and delete the resource

证据

With over 12 years in IT and 6+ years managing production workloads on AWS, I’ve found that the best way to control cloud spend is to shift from reactive monitoring to automated remediation.

来源

An AWS Lambda function scans the account for unattached EBS volumes and idle Elastic IPs.

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If an idle resource is found, Lambda triggers an AWS Systems Manager (SSM) Automation Document to snapshot the volume for safety and then delete it.

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