Q: A user wants to manually delete a massive S3 bucket containing 100 million objects. They click "Delete" in the AWS Console, but it fails, saying the bucket is not empty. Using the CLI `aws s3 rm --recursive` might take days. What is the fastest, "Ops" way to delete it?
The fastest and most cost-effective way to delete millions of objects is to let the S3 backend do the work asynchronously.
#General DevOps #General DevOps — Scenario-Based Interview Questions #L1 #DevOps #SRE #Architecture
🎙️ Candidate Opening & Architectural Context
""We faced this organizational and technical challenge while scaling our engineering teams. The interviewer is testing: S3 Lifecycle policies, understanding of S3 scale.. I structure my answer around systematic triage first, root cause analysis second, and permanent remediation third.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Initial Diagnostics & Root Cause Analysis
The fastest and most cost-effective way to delete millions of objects is to let the S3 backend do the work asynchronously.
- Set the rule to target the entire bucket (no prefix filter).
- Set the action to "Expire current versions of objects" and "Permanently delete noncurrent versions" after 1 day.
- Apply the rule. Over the next 24-48 hours, AWS backend processes will asynchronously and freely sweep through the bucket and delete all 100 million objects. Once empty, I can simply delete the bucket.
2️⃣
Remediation & Permanent Safeguards
I would apply an S3 Lifecycle Rule to the bucket:
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: Set the rule to target the entire bucket (no prefix filter).."
⚡ 60-Second Elevator Pitch Talking Points
- Set the rule to target the entire bucket (no prefix filter).
- Set the action to "Expire current versions of objects" and "Permanently delete noncurrent version...
- Apply the rule. Over the next 24-48 hours, AWS backend processes will asynchronously and freely s...
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