Guide to Hybrid Cloud & Bare Metal Secret Management

Cloud Security Podcast

Is your organization struggling with secret management across bare metal, hybrid, and multi-cloud environments? Standard cloud-native tools often fall short when you need a single, standardized solution that bridges all your infrastructure.

Dan Popescu, Senior Site Reliability Engineer at Booking.com joins us to share how they built a cloud-agnostic secret management strategy using HashiCorp Vault. We dive deep into the technical challenges of providing identity to bare metal machines, rotating dynamic secrets in legacy and modern applications, and why a central "broker" for authentication is critical for security at scale.

Guest Socials -⁠⁠ Dan 's Linkedin

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Questions asked:

(00:00) Introduction(02:13) Dan's Background: From Cloud (AWS, GCP) to Bare Metal(03:06) The Core Challenges: Secret Exposure, Rotation & Access Control(04:45) Why Cloud-Native Fails at Scale: The Cost of 500k Requests/Min(07:32) What is a "Secret"? (It's More Than Just Passwords)(09:12) The Secret Lifecycle: Rotation, Revocation & Caching Issues(10:33) Securing Bare Metal: The Unique Challenge of On-Prem Secrets(15:44) Kubernetes & Container Secrets: Sidecars vs. Operators(18:36) The Pain of Moving from Static to Dynamic Secrets(20:40) How Do Machines Get an Identity? (Cloud IAM vs. Bare Metal)(24:28) A Practical Roadmap: Where to Start Standardizing Secrets(26:53) Key Learnings & Technical Pitfalls to Avoid(28:59) The Fun Section