DevOps & CI/CD

Zero-Trust Secret Injection with HashiCorp Vault

DevOps & CI/CD diagram · made in Skemio

Architecture diagram displaying an App Pod with Vault Sidecar, Kubernetes Token API, HashiCorp Vault Server, and dynamic PostgreSQL instance.
Architecture diagram displaying an App Pod with Vault Sidecar, Kubernetes Token API, HashiCorp Vault Server, and dynamic PostgreSQL instance.
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What it shows

  • Kubernetes pods authenticate to Vault using ephemeral projected service account tokens.
  • Vault validates tokens via the Kube API server before returning scoped client leases.
  • Dynamic engine generates single-tenant DB users that expire automatically in hours.

The takeaway

Replace static secrets with identity-based token exchange and dynamic credential generation.

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