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Kubernetes Policy Enforcement: Understanding Pod Security Admission (PSA)

Kubernetes Policy Enforcement: Understanding Pod Security Admission (PSA)

Kubernetes has introduced the Pod Security Admission (PSA) mechanism to replace the deprecated Pod Security Policies (PSP). This article dives into the key capabilities Kubernetes offers for policy enforcement out of the box, particularly focusing on the PSA framework. We will explore the core Pod Security Standards, how PSA improves security practices, and how to configure policies using Kubernetes labels to apply them to different namespaces.