Enabling Service Topology

This page provides an overview of enabling Service Topology in Kubernetes.

Before you begin

You need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:

• Katacoda
• Play with Kubernetes

Introduction

Service Topology enables a service to route traffic based upon the Node topology of the cluster. For example, a service can specify that traffic be preferentially routed to endpoints that are on the same Node as the client, or in the same availability zone.

Prerequisites

The following prerequisites are needed in order to enable topology aware service routing:

• Kubernetes 1.17 or later
• Kube-proxy running in iptables mode or IPVS mode
• Enable Endpoint Slices

Enable Service Topology

To enable service topology, enable the ServiceTopology and EndpointSlice feature gate for all Kubernetes components:

--feature-gates="ServiceTopology=true,EndpointSlice=true"

What's next

• Read about the Service Topology concept
• Read about Endpoint Slices
• Read Connecting Applications with Services