container.training/k8s/kyverno-ingress-domain-name-3.yaml

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: ingress-domain-name
spec:
  rules:
  - name: create-ingress
    context:
    - name: configmap
      configMap:
        name: ingress-domain-name
        namespace: "{{request.object.metadata.namespace}}"
    match:
      resources: 
        kinds:
        - Service
    preconditions:
    - key: "{{request.object.spec.ports[0].name}}"
      operator: Equals
      value: http
    generate: 
      kind: Ingress
      name: "{{request.object.metadata.name}}"
      namespace: "{{request.object.metadata.namespace}}"
      data:
        spec:
          rules:
          - host: "{{request.object.metadata.name}}.{{request.object.metadata.namespace}}.{{configmap.data.domain}}"
            http:
              paths:
              - backend:
                  service:
                    name: "{{request.object.metadata.name}}"
                    port:
                      name: http
                path: /
                pathType: Prefix