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DevOps & Automation · Intermediate

HashiCorp Vault

A secrets management tool that stores static secrets, generates dynamic credentials, and provides encryption as a service.

Definition

Vault authenticates clients through auth methods (Kubernetes, AppRole, OIDC), authorizes via policies, and issues secrets from engines such as KV, database, PKI, and transit. Leases and revocation limit exposure.

Example

The database secrets engine issues a unique Postgres username valid for one hour to each app instance.

Exam tip

Dynamic secrets with leases are Vault's key advantage over static secret storage.

Related terms