default backend to legacy service

default-backend-to-legacy-service.sh

---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: default-backend-to-legacy-service
spec:
  backend:
    serviceName: legacy-service
    servicePort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: legacy-service
spec:
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
---
apiVersion: v1
kind: Endpoints
metadata:
  name: legacy-service
subsets:
  - addresses:
      - ip: 192.168.0.x
    ports:
      - port: 80