kyverno/examples/generate/policy_generate.yaml

apiVersion: kyverno.io/v1alpha1
kind: Policy
metadata:
  name: "zk-kafka-address"
spec:
  rules:
  - name: "copy-comfigmap"
    resource :
      kinds : 
      - Namespace
      selector:
        matchLabels:
          LabelForSelector : "namespace2"
    generate :
      kind: ConfigMap
      name : copied-cm
      copyFrom :
        namespace : default
        name : game-config
      data :
        secretData: "data from cmg"
  - name: "zk-kafka-address"
    resource:
      kinds:
        - Namespace
      selector:
        matchExpressions:
        - {key: LabelForSelector, operator: In, values: [namespace2]}
    generate:
      kind: ConfigMap
      name: zk-kafka-address
      data:
        ZK_ADDRESS: "192.168.10.10:2181,192.168.10.11:2181,192.168.10.12:2181"
        KAFKA_ADDRESS: "192.168.10.13:9092,192.168.10.14:9092,192.168.10.15:9092"