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You need to have a Kubernetes cluster, and the kubectl command-line tool must
be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a
cluster, you can create one by using
[minikube](https://minikube.sigs.k8s.io/docs/tutorials/multi_node/)
or you can use one of these Kubernetes playgrounds:
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你必须拥有一个 Kubernetes 的集群，同时你必须配置 kubectl 命令行工具与你的集群通信。
建议在至少有两个不作为控制平面主机的节点的集群上运行本教程。
如果你还没有集群，你可以通过 [Minikube](https://minikube.sigs.k8s.io/docs/tutorials/multi_node/)
构建一个你自己的集群，或者你可以使用下面的 Kubernetes 练习环境之一：

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* [Killercoda](https://killercoda.com/playgrounds/scenario/kubernetes)
* [Play with Kubernetes](https://labs.play-with-k8s.com/)
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* [Killercoda](https://killercoda.com/playgrounds/scenario/kubernetes)
* [玩转 Kubernetes](https://labs.play-with-k8s.com/)