Kubernetes Admission Controllers are a powerful but often overlooked security mechanism. Acting as gatekeepers, they intercept API server requests before objects are persisted in etcd, allowing you to enforce custom policies or inject configurations automatically. Whether it’s blocking privileged containers or ensuring labels are in place, Admission Controllers play a crucial role in securing Kubernetes clusters from the inside out.
What Are Admission Controllers?
Admission Controllers are plugins that govern and modify requests to the Kubernetes API server. There are two types:
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