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<b>Kubernetes coordinates a highly available cluster of computers that are connected to work as a single unit.</b> The abstractions in Kubernetes allow you to deploy containerized applications to a cluster without tying them specifically to individual machines. To make use of this new model of deployment, applications need to be packaged in a way that decouples them from individual hosts: they need to be containerized. Containerized applications are more flexible and available than in past deployment models, where applications were installed directly onto specific machines as packages deeply integrated into the host. <b>Kubernetes automates the distribution and scheduling of application containers across a cluster in a more efficient way.</b> Kubernetes is an open-source platform and is production-ready.
A Kubernetes cluster consists of two types of resources:
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<p>一个 Kubernetes 集群包含两种类型的资源：
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<ul>
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<li><b> Control Plane </b>调度整个集群</li>
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<li><b> Nodes </b>负责运行应用</li>
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<li>The <b>Control Plane</b> coordinates the cluster</li>
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<li><b>Nodes</b> are the workers that run applications</li>
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<li><b>控制面</b>调度整个集群</li>
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<li><b>节点</b>负责运行应用</li>
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<h3>Summary:</h3>
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<h3>总结:</h3>
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<ul>
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<li> Kubernetes 集群</li>
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<li> Minikube </li>
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<li>Kubernetes cluster</li>
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<li>Minikube</li>
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<li>Kubernetes 集群</li>
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<li>Minikube</li>
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<p><i>
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Kubernetes is a production-grade, open-source platform that orchestrates the placement (scheduling) and execution of application containers within and across computer clusters.
<b>The Control Plane is responsible for managing the cluster.</b> The Control Plane coordinates all activities in your cluster, such as scheduling applications, maintaining applications' desired state, scaling applications, and rolling out new updates.
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<p><b>控制面负责管理整个集群。</b>
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控制面协调集群中的所有活动，例如调度应用、维护应用的所需状态、应用扩容以及推出新的更新。</p>
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<b>A node is a VM or a physical computer that serves as a worker machine in a Kubernetes cluster.</b> Each node has a Kubelet, which is an agent for managing the node and communicating with the Kubernetes control plane. The node should also have tools for handling container operations, such as containerd or Docker. A Kubernetes cluster that handles production traffic should have a minimum of three nodes because if one node goes down, both an <a href="/docs/concepts/overview/components/#etcd">etcd</a> member and a control plane instance are lost, and redundancy is compromised. You can mitigate this risk by adding more control plane nodes.
<p><i> Control Plane 管理集群，Node 用于托管正在运行的应用。</i></p>
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Control Planes manage the cluster and the nodes that are used to host the running applications.
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<p><i>控制面管理集群，节点用于托管正在运行的应用。</i></p>
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<p>在 Kubernetes 上部署应用时，你告诉 Control Plane 启动应用容器。 Control Plane 就编排容器在集群的 Node 上运行。<b> Node 使用 Control Plane 暴露的 <ahref="/docs/concepts/overview/kubernetes-api/">Kubernetes API</a> 与 Control Plane 通信。</b>终端用户也可以使用 Kubernetes API 与集群交互。</p>
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<p> Kubernetes 既可以部署在物理机上也可以部署在虚拟机上。你可以使用 Minikube 开始部署 Kubernetes 集群。 Minikube 是一种轻量级的 Kubernetes 实现，可在本地计算机上创建 VM 并部署仅包含一个节点的简单集群。 Minikube 可用于 Linux ， macOS 和 Windows 系统。Minikube CLI 提供了用于引导集群工作的多种操作，包括启动、停止、查看状态和删除。</p>
When you deploy applications on Kubernetes, you tell the control plane to start the application containers. The control plane schedules the containers to run on the cluster's nodes. <b>The nodes communicate with the control plane using the <a href="/docs/concepts/overview/kubernetes-api/">Kubernetes API</a></b>, which the control plane exposes. End users can also use the Kubernetes API directly to interact with the cluster.
A Kubernetes cluster can be deployed on either physical or virtual machines. To get started with Kubernetes development, you can use Minikube. Minikube is a lightweight Kubernetes implementation that creates a VM on your local machine and deploys a simple cluster containing only one node. Minikube is available for Linux, macOS, and Windows systems. The Minikube CLI provides basic bootstrapping operations for working with your cluster, including start, stop, status, and delete.
Once you've done that, move on to <a href="/docs/tutorials/kubernetes-basics/deploy-app/deploy-intro/">Using <tt>kubectl</tt> to create a Deployment</a>.
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