Adding documentation for Topology Aware Hints

2021-03-12 16:32:35 -08:00
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+---
+reviewers:
+- robscott
+title: Enabling Topology Aware Hints
+content_type: task
+min-kubernetes-server-version: 1.21
+---
+
+<!-- overview -->
+{{< feature-state for_k8s_version="v1.21" state="alpha" >}}
+
+_Topology Aware Hints_ enable topology aware routing with topology hints
+included in EndpointSlices. This approach tries to keep traffic close to where
+it originated from. This can result in decreased costs and improved performance.
+
+## {{% heading "prerequisites" %}}
+
+  {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
+
+The following prerequisite is needed in order to enable topology aware hints:
+
+* {{< glossary_tooltip text="Kube-proxy" term_id="kube-proxy" >}} running in
+  iptables mode or IPVS mode
+* Ensure that you have not disabled EndpointSlices
+
+## Enable Topology Aware Hints
+
+To enable service topology, enable the `TopologyAwareHints` [feature
+gate](docs/reference/command-line-tools-reference/feature-gates/) for the
+kube-apiserver, kube-controller-manager, and kube-proxy:
+
+```
+--feature-gates="TopologyAwareHints=true"
+```
+
+## {{% heading "whatsnext" %}}
+
+* Read about [Topology Aware Hints](/docs/concepts/services-networking/topology-aware-hints) for Services
+* Read [Connecting Applications with Services](/docs/concepts/services-networking/connect-applications-service/)