Kubernetes with Open Policy Agent (OPA) & Gatekeeper

Open Policy Agent (OPA) is a general-purpose policy engine that evaluates inputs against expressions you configure, commonly used to enforce security policies in cloud resources and infrastructure components. OPA integrates with Kubernetes through the use of admission controllers, allowing for continuous enforcement of policies without manual intervention. Policies are written in Rego query language, which is designed to be expressive and approachable for human readers. Using OPA with Kubernetes provides benefits such as ensuring authorized configurations, applying consistent controls across all teams and apps, maintaining compliance with regulatory standards, enabling granular security policy enforcement, and centrally managing policies as code. The OPA Gatekeeper project simplifies the process of integrating OPA with Kubernetes by automating the configuration of admission controllers and providing a set of Kubernetes CRDs for configuring policies.