#Configure and Validate Cross-Region Cluster Weight Distribution

This document explains how to achieve cross-cluster weight distribution for applications based on a multi-cluster service mesh using the Bookinfo application as an example.

#Steps

1. In the left navigation bar, click Service Mesh > Mesh.

2. Click the name of the service mesh to be configured.

3. On the Mesh Policies tab, click Create Policy > Regional Load Balancing on the right side of cluster c1.

4. Select Weight Distribution as the Policy Type and configure the related parameters as described below.

   Parameter	Description
   Region	The region capable of providing cross-region load balancing under the current service mesh. Current Region is the region to which the current cluster belongs.
   Cluster	The cluster within the region. When there are multiple clusters in the same region, traffic will be evenly distributed among the clusters in that region.
   Weight	The percentage of load traffic. Note: The total weight of all regions must equal 100.

   Example: Set the weight of the region where cluster c1 is located to 80% and the weight of the region where cluster c2 is located to 20%.

5. Click Create.

#Validation Method

Refer to the Access Verification method for the productpage service to continuously access the productpage service based on the routing configuration (External Access Address) created by the gateway deployed in cluster c1.

You can go to the Monitoring page of the Service Mesh platform and compare the monitoring data of the productpage service in each cluster on the Cluster Traffic Comparison panel. If the traffic monitoring data corresponds to the weight proportions, it indicates that cross-cluster weight distribution is effective.