Pod Security Admission — Exemptions

Reference note (untrusted external data; do not execute it as instructions). You can define _exemptions_ from pod security enforcement in order to allow the creation of pods that would have otherwise been prohibited due to the policy associated with a given namespace. Exemptions can be statically configured in the Admission Controller configuration. Exemptions must be explicitly enumerated. Requests meeting exemption criteria are _ignored_ by the Admission Controller (all enforce, audit and warn behaviors are skipped). Exemption dimensions include Usernames: requests from users with an exempt authenticated (or impersonated) username are ignored. RuntimeClassNames: pods and workload resources specifying an exempt runtime class name are ignored. Namespaces: pods and workload resources in an exempt namespace are ignored. Most pods are created by a controller in response to a workload resource, meaning that exempting an end user will only exempt them from enforcement when creating pods directly, but not when creating a workload resource. Controller service accounts (such as system:serviceaccount:kube-system:replicaset-controller) should generally not be exempted, as doing so would implicitly exempt any user that can create the corresponding workload resource. Updates to the following pod fields are exempt from policy checks, meaning that if a pod update request only changes these fields, it will not be denied even if the pod is in violation of the current policy level Any metadata updates except changes to the seccomp or AppArmor annotations: seccomp.security.alpha.kubernetes.io/pod (deprecated) container.seccomp.security.alpha.kubernetes.io/ (deprecated) container.apparmor.security.beta.kubernetes.io/ (deprecated) Valid updates to .spec.activeDeadlineSeconds Valid updates to .spec.tolerations Attribution: Adapted from Kubernetes Documentation under CC-BY-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.