Authors: Joe Betz (Google), Cici Huang (Google) In
Kubernetes 1.26, the 1st alpha release of validating admission
policies is available! Validating admission policies use the
Common Expression Language (CEL) to offer a
declarative, in-process alternative to validating admission webhooks. CEL was first
introduced to Kubernetes for the Validation rules for
CustomResourceDefinitions.This enhancement expands the use of
CEL in Kubernetes to support a far wider range of admission use
cases. Admission webhooks can be burdensome to develop and
operate.Webhook developers must implement and maintain a webhook