12 Scaling Istio in your organization

This chapter covers

  • Scaling the service mesh in multiple clusters
  • Resolving the prerequisites to join two clusters
  • Setting up common trust between workloads of different clusters
  • Discovering cross-cluster workloads
  • Configuring Istio’s ingress gateway for east-west traffic

In the previous chapters, we have seen many of Istio’s features and the capabilities they enable within a mesh on a single cluster. However, a service mesh is not bound to a single cluster; it can span many clusters and provide the same capabilities across all of them. In fact, a mesh’s value increases when more workloads are part of it.

But when would we want a service mesh to span multiple clusters? What are the benefits of a multi-cluster ...

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