Kubernetes Admission Controller Concepts

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External

Internal

Overview

An admission controller is a piece of code that intercepts requests to the Kubernetes API server prior to persistence of the metadata, but after the request is authenticated and authorized. There is a fixed set of admission controller that include AlwaysPullImages, PodSecurityPolicy, etc. The controllers are compiled into the kube-apiserver binary, and may only be configured by the cluster administrator.

Admission Controller Types

AlwaysPullImages

https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#alwayspullimages

PodSecurityPolicy

PodSecurityPolicy Admission Controller

Admission Controller Operations

Admission Controller Operations