welcome-svc-virtual-service-80-20.yaml

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: welcome
spec:
  hosts:
  - "*"
  gateways:
  - welcome-gateway
  http:
  - match:
    - uri:
        prefix: /welcome
    route:
    - destination:
        host: welcome
        subset: v1
      weight: 80
    - destination:
        host: welcome
        subset: v2
      weight: 20
---