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Pod Security Standards and Admission

RBAC decides who can create a pod, not what that pod asks for. A pod running privileged or borrowing hostNetwork is an escape hatch onto the node. Pod Security Admission blocks it at creation: one label on a namespace, the API server measures the pod against three levels — privileged/baseline/restricted — and rejects violators. This article turns restricted on for a namespace, watches a plain pod get kicked out, writes a compliant pod that runs, then tries warn mode.