Author: Mahé Tardy (Quarkslab) The
PodSecurityPolicy (PSP) admission controller has been removed, as
of Kubernetes v1.25.Its deprecation was announced and detailed in
the blog post PodSecurityPolicy Deprecation:Past, Present, and
Future, published for the Kubernetes v1.21 release. This
article aims to provide historical context on the birth and
evolution of PSP, explain why the feature never made it to stable,
and show why it was removed and replaced by Pod Security admission
control. PodSecurityPolicy, like other specialized admission
control plugins, provided fine-grained permissions on specific
fields concerning the pod