This page provides an overview of enabling EndpointSlices in Kubernetes.
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:
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EndpointSlices provide a scalable and extensible alternative to Endpoints in Kubernetes. They build on top of the base of functionality provided by Endpoints and extend that in a scalable way. When Services have a large number (>100) of network endpoints, they will be split into multiple smaller EndpointSlice resources instead of a single large Endpoints resource.
Note: Although EndpointSlices may eventually replace Endpoints, many Kubernetes components still rely on Endpoints. For now, enabling EndpointSlices should be seen as an addition to Endpoints in a cluster, not a replacement for them.
EndpointSlices are considered a beta feature, but only the API is enabled by default. Both the EndpointSlice controller and the usage of EndpointSlices by kube-proxy are not enabled by default.
The EndpointSlice controller creates and manages EndpointSlices in a cluster.
You can enable it with the
gate on the kube-apiserverControl plane component that serves the Kubernetes API.
and kube-controller-managerControl Plane component that runs controller processes.
For better scalability, you can also enable this feature gate on kube-proxykube-proxy is a network proxy that runs on each node in the cluster. so EndpointSlices will be used as the data source instead of Endpoints.
With EndpointSlices fully enabled in your cluster, you should see corresponding EndpointSlice resources for each Endpoints resource. In addition to supporting existing Endpoints functionality, EndpointSlices should include new bits of information such as topology. They will allow for greater scalability and extensibility of network endpoints in your cluster.
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