istio route traffic by weight/percentage - how do you configure that?

We can easily configure traffic weight in virtual service. Here is an example of how we can do that.


apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: reviews
spec:
  hosts:
  - reviews
  http:
  - route:
    - destination:
        host: reviews
        subset: v1
        port:
          number: 9080
      weight: 50
    - destination:
        host: reviews
        subset: v2
        port:
          number: 9080
      weight: 50
---
apiVersion: networking.istio.io/v1beta1
kind: DestinationRule
metadata:
  name: reviews-destination
spec:
  host: reviews
  trafficPolicy:
    loadBalancer:
      simple: ROUND_ROBIN # <-- This enables round-robin, other option are LEAST_CONN
  subsets:
  - name: v1
    labels:
      version: v1
  - name: v2
    labels:
      version: v2



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