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How to achieve internal service to service communication in Anthos multiple clusters Example service A deployed in GKE cluster and service B deployed in AKS cluster, here how we can call service A from service B (internally) ?

Aadesh kale
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    how are you planning actually? multiple options possibly actually, you can peer the VPCs going with VPN option. Mesh option ref : https://cloud.google.com/service-mesh/docs/unified-install/off-gcp-multi-cluster-setup – Harsh Manvar May 29 '23 at 09:33
  • I want to ensure traffic should not exposed to public internet, how can we do it? – Aadesh kale May 29 '23 at 11:15
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    Have you checked this document on [Set up a multi cluster mesh on GKE](https://cloud.google.com/service-mesh/docs/unified-install/gke-install-multi-cluster). – Fariya Rahmat May 29 '23 at 12:46
  • @FariyaRahmat yes two clusters are two different network one in gcp one in aws – Aadesh kale May 29 '23 at 12:58

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As suggested by @Harsh Manver you can set up a multi cluster mesh outside Google Cloud to achieve internal service to service communication in Anthos multiple clusters.

As mentioned in the document:

The cluster's Kubernetes control plane address and the gateway address need to be reachable from every cluster in the mesh. The Google Cloud project in which GKE clusters are located should be allowed to create external load balancing types.

We recommend that you use authorized networks and VPC firewall rules to restrict the access and ensure traffic should not exposed to public internet

Fariya Rahmat
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