64 lines
2.2 KiB
Markdown
64 lines
2.2 KiB
Markdown
---
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reviewers:
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- bowei
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- freehan
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title: Enabling EndpointSlices
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content_template: templates/task
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---
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{{% capture overview %}}
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This page provides an overview of enabling EndpointSlices in Kubernetes.
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{{% /capture %}}
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{{% capture prerequisites %}}
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{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
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{{% /capture %}}
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{{% capture steps %}}
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## Introduction
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EndpointSlices provide a scalable and extensible alternative to Endpoints in
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Kubernetes. They build on top of the base of functionality provided by Endpoints
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and extend that in a scalable way. When Services have a large number (>100) of
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network endpoints, they will be split into multiple smaller EndpointSlice
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resources instead of a single large Endpoints resource.
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## Enabling EndpointSlices
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{{< feature-state for_k8s_version="v1.17" state="beta" >}}
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{{< note >}}
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Although EndpointSlices may eventually replace Endpoints, many Kubernetes
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components still rely on Endpoints. For now, enabling EndpointSlices should be
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seen as an addition to Endpoints in a cluster, not a replacement for them.
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{{< /note >}}
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EndpointSlices are a beta feature. Both the API and the EndpointSlice
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{{< glossary_tooltip term_id="controller" >}} are enabled by default.
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{{< glossary_tooltip text="kube-proxy" term_id="kube-proxy" >}}
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uses Endpoints by default, not EndpointSlices.
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For better scalability and performance, you can enable the
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`EndpointSliceProxying`
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[feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
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on kube-proxy. That change
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switches the data source to be EndpointSlices, which reduces the amount of
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Kubernetes API traffic to and from kube-proxy.
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## Using EndpointSlices
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With EndpointSlices fully enabled in your cluster, you should see corresponding
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EndpointSlice resources for each Endpoints resource. In addition to supporting
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existing Endpoints functionality, EndpointSlices include new bits of information
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such as topology. They will allow for greater scalability and extensibility of
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network endpoints in your cluster.
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{{% capture whatsnext %}}
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* Read about [EndpointSlices](/docs/concepts/services-networking/endpoint-slices/)
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* Read [Connecting Applications with Services](/docs/concepts/services-networking/connect-applications-service/)
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{{% /capture %}}
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