How to set up dynamic secrets for Postgres using Vault and Spring Boot on Kubernetes

This article explains how to set up dynamic secrets for Postgres using Vault and Spring Boot on Kubernetes. It discusses the importance of credential management and provides an alternate solution for integrating Spring Boot applications with Vault. The article also outlines the steps to configure Vault for managing Postgres credentials and explains how the Vault Agent retrieves and inserts credentials into the Spring Boot application. Additionally, it covers the process for rotating credentials in Vault, Vault's authentication with Kubernetes, and how the Spring Boot application updates its connections when credentials are rotated. Finally, it provides guidance on deploying the Spring Boot application with Vault Agent.