kubernetes-yaml/learn/learn-kubernetes-master/kiamol/ch16/opa/constraints/requiredLabels.yaml

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: RequiredLabels
metadata:
  name: requiredlabels-kiamol
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Service", "Deployment", "ConfigMap"]
      - apiGroups: ["apps"]
        kinds: ["Deployment"]
  parameters:
    labels: ["kiamol"]
---
apiVersion: constraints.gatekeeper.sh/v1beta1
kind: RequiredLabels
metadata:
  name: requiredlabels-app
spec:
  match:
    kinds:
      - apiGroups: [""]
        kinds: ["Pod"]
  parameters:
    labels: ["app", "version"]