# Installation

这里我们会详细介绍如何部署一个 Eru 集群和如何维护它

* 准备工作
* 部署 Core
* 部署 Agent
* 管理 Pod 和 Node

一般来说，一旦 ERU 集群建立完之后，以后每增加一台机器都只需上去做初始化工作加入集群即可, 通过 Cli 我们可以很容易的完成这些事情。

**注意: 对于刚部署好的 Eru 集群而言，你需要先添加 Pod 才能添加 Node，只有添加完 Node 之后才能部署 Agent。**


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```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.