Configuring dynamic secrets for a PostgreSQL and GitLab CI using HashiCorp Vault

This summary discusses the importance of using dynamic secrets, also known as ephemeral or just-in-time secrets, to minimize the risk of credential theft. It explains how HashiCorp Vault can be used to issue short-lived credentials for a PostgreSQL database and in a GitLab CI pipeline. The article provides two practical scenarios: one that shows how to configure and use the database secrets engine with Vault to create ephemeral database users with a limited lifespan, and another example that demonstrates how to retrieve static vs. dynamic secrets in GitLab CI. By using dynamic secrets, organizations can reduce the attack window if a secret becomes compromised, as these credentials automatically expire after a set TTL. This approach aligns with zero trust principles and improves operational efficiency.