# 集群部署

etcd作为一个可靠的分布式键值存储服务，为了保证整个系统的高可用，以及发挥raft算法的魅力，要求进行集群化部署。 一个etcd集群最少节点要求是3个成员组成。 建议的部署节点是5个节点，这样即使集群中有两个节点发生异常，集群仍然是 可用的。


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://csunny.gitbook.io/etcd/cluster.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.