how can I add a rewrite uri in the destination of virtual service
There are couple of things you are not doing, I would say. First of all to do canary, you don't do it for two different services, but your do for two subsets of the same service. In the end, there are two different deployments, but you need to define just one service, then through a DestinationRule you define the subsets.
In other words, you have two deployments right? These two deployments will have one common label, and one label that differs. Through the common labels you will define DESTINATION_HOST_THAT_HAS_SUBSETS, and through the labels that differs you would define the subsets service1host and service2host.
Then, your VirtualService will look like this:
apiVersion: networking.istio.io/v1alpha3kind: VirtualServicemetadata: name: server-vsspec: hosts: - DESTINATION_HOST_THAT_HAS_SUBSETS http: - match: - uri: prefix: /path1 rewrite: uri: /path1modified route: - destination: host: DESTINATION_HOST_THAT_HAS_SUBSETS subset: service1host weight: 50 route: - destination: host: DESTINATION_HOST_THAT_HAS_SUBSETS subset: service2host weight: 50UPDATE
After jt97's comment, which is correct about being possible to have two separate services, this VirtualService should work as well.
apiVersion: networking.istio.io/v1alpha3kind: VirtualServicemetadata: name: server-vsspec: hosts: - DESTANTION_HOST http: - match: - uri: prefix: /path1 rewrite: uri: /path1modified route: - destination: host: service1host weight: 50 route: - destination: host: service2host weight: 50