Q: How do you rotate an RDS database password without downtime?
Use AWS Secrets Manager. It stores the password and has a rotation Lambda function that: generates new password, updates it in RDS, updat...
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🎙️ Candidate Opening & Architectural Context
""When an interviewer asks how I troubleshoot this in AWS, I frame it through my hands-on production experience. When addressing this question, I walk the interviewer through our production incident runbook: isolating the blast radius, checking diagnostic logs and metrics, and applying a safe fix.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Production Solution & Architecture
Use AWS Secrets Manager. It stores the password and has a rotation Lambda function that: generates new password, updates it in RDS, updates the secret value. Your app retrieves the password from Secrets Manager (not hardcoded). During rotation, there's a brief period where both old and new passwords work (RDS supports this). Zero downtime.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: Use AWS Secrets Manager. It stores the password and has a rotation Lambda function that: generates new password, updates it in RDS."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: Use AWS Secrets Manager. It stores the password and has a rotation Lambda function that: genera
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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