Securing Kubernetes Namespaces with Pod Security Admission

Securing workloads in a containerized environment requires proactive guardrails rather than reactive fixes. Implementing built-in admission controls is the most efficient way to ensure your Kubernetes pods adhere to modern security baselines. This text-based course guides you through securing your cluster namespaces using Kubernetes Pod Security Admission (PSA). You will transition from understanding core security concepts to confidently applying predefined standards that prevent vulnerable configurations from running in your environment. What you'll learn: - Understand foundational Kubernetes security concepts and the role of admission controllers in container orchestration. - Configure Pod Security Standards including Privileged, Baseline, and Restricted profiles. - Apply different admission modes such as Enforce, Audit, and Warn to control policy behavior. - Troubleshoot blocked pod deployments by analyzing admission controller messages and logs. - Implement modern zero-trust principles within your cluster using standard declarative configurations. You will begin by learning key security terminology, admission control architecture, and foundational definitions. From there, you will read through step-by-step configuration examples, analyze YAML definitions, and complete written exercises to reinforce how to audit and enforce policies across various namespaces. This course is designed for beginners to Kubernetes security and administration, with no advanced prerequisites required. Start reading today to build a more resilient and secure container infrastructure.