Multicloud network traffic distribution configuration under the mesh¶

This page describes how to configure different traffic flows for workloads in a multicloud network.

Preconditions:

• The service helloworld runs under the namespace helloworld of the mesh hosted-mesh
• Enable Multicloud Network Interconnection
• Mesh provides ingressgatway gateway instance

Configuration steps:

1. Based on the cluster to which it belongs, the request traffic is divided by weight;

2. Label the helloworld workload of both clusters:

   Belonging cluster	Label	Value
   yl-cluster10	version	v1
   yl-cluster20	version	v2

3. Click Mesh Sidecar -> Workload in the left navigation bar to inject the sidecar into the helloworld workload of the two clusters.

4. On the left navigation bar, click Traffic Management -> Destination Rules -> Create to create two service versions.

   The corresponding YAML is as follows:

   apiVersion: networking.istio.io/v1beta1
   kind: DestinationRule
   metadata:
     name: helloworld-version
     namespace: helloworld
   spec:
     host: helloworld
     subsets:
       - labels:
   ​ version: v1
   ​ name: v1
       - labels:
   ​ version: v2
         name: v2
   

5. On the left navigation bar, click Traffic Management -> Gateways -> Create to create a gateway rule.

   The corresponding YAML is as follows:

   apiVersion: networking.istio.io/v1beta1
   kind: Gateway
   metadata:
     name: helloworld-gateway
     namespace: helloworld
   spec:
     selector:
       istio: ingressgateway
     servers:
       -hosts:
   ​ - hello.m.daocloud
         port:
   name: http
   ​number: 80
   ​ protocol: http
   

6. On the left navigation bar, click Traffic Management -> Virtual Service -> Create , create routing rules, and divide traffic to two clusters based on the weight ratio:

   The corresponding YAML is as follows:

   apiVersion: networking.istio.io/v1beta1
   kind: VirtualService
   metadata:
     name: helloworld-version
     namespace: helloworld
   spec:
     gateways:
       - helloworld-gateway
     hosts:
       - helloworld.helloworld.svc.cluster.local
     http:
       - match:
         - uri:
           exact: /hello
         name: helloworld-routes
         route:
           -destination:
             host: helloworld
             port:
               number: 5000
             subset: v1
             weight: 30
           -destination:
             host: helloworld
             port:
               number: 5000
               subset: v2
             weight: 70
   

7. On the left navigation bar, click Mesh Configuration -> Multicloud Network Interconnection to enable Multicloud Network Interconnection.

8. Initiate 1000 get requests through JMeter and set the assertion

9. View the request aggregation report (set the assertion helloworld v2), the success rate is 70%, and the exception rate is close to 30%.

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