zookeeper：简介及常用命令

淩亂°似流年 2024-03-26 16:43 65阅读 0赞

**目录**

一、Zookeeper简介

二、Zookeeper服务端常用命令

1、启动ZooKeeper服务

2、查看ZooKeeper服务状态

3、停止ZooKeeper服务

4、重启ZooKeeper服务

三、Zookeeper客户端常用命令

1、连接ZooKeeper服务端

2、断开连接：quit

3、查看命令帮助：help

5、创建节点：create /节点path value

6、获取节点值：get /节点path

7、设置节点：set /节点path value

8、删除单个节点：delete /节点path

9、删除带有子节点的节点：deleteall/节点path

10、创建临时节点：create -e /节点path value

11、创建顺序节点：create -s /节点path value

12、查询节点详细信息：get /节点path

--------------------

### 一、Zookeeper简介 ###

Zookeeper是 Apache Hadoop项目下的一个子项目，是一个树形目录服务。

Zookeeper翻译过来就是动物园管理员，他是用来管Hadoop(大象)、Hive(蜜蜂)、Pig(小猪)的管理

员。简称zk

Zookeeper是一个分布式的、开源的分布式应用程序的协调服务。

Zookeeper提供的主要功能包括:

**1、配置中心**

![fc087f842aba4902bbab0efc0323d8c6.png][]  
**2、分布式锁**

![ed68b84e9adb4d0fa51af9813aed546b.png][]

**3、集群管理**

![c8cf2419759d4012b217ea826b320715.png][]

**Zookeeper数据模型**

ZooKeeper是一个树形目录服务，其数据模型和Unix的文件系统目录树很类似，拥有一个层次化结

构。

这里面的每一个节点都被称为: ZNode，每个节点上都会保存自己的数据和节点信息。

节点可以拥有子节点，同时也允许少量(1MB）数据存储在该节点之下。

**节点可以分为四大类:**

PERSISTENT持久化节点

EPHEMERAL l临时节点：-e

PERSISTENT\_SEQUENTIAL持久化顺序节点：-s

EPHEMERAL\_SEQUENTIAL 临时顺序节点：-es

![5c25af185b994b7193369340aaed54e2.png][]

### 二、Zookeeper服务端常用命令 ###

首先进入zookeeper的bin目录

![b842778d56a54178ab0cf11dbb1bbcd4.png][]

#### 1、启动ZooKeeper服务 ####

./zkServer.sh start

![9de182a3194f42e890a12160909a766c.png][]

#### 2、查看ZooKeeper服务状态 ####

./zkServer.sh status

![d75c3a2b428f4cafb0207e2fb696ca75.png][]

#### 3、停止ZooKeeper服务 ####

./zkServer.sh stop

![f77b66bac7d14605b17037b6af7eba11.png][]

#### 4、重启ZooKeeper服务 ####

./zkServer.sh restart

![c87ebfc0e35049aeb9ace83e288b8831.png][]

### 三、Zookeeper客户端常用命令 ###

#### 1、连接ZooKeeper服务端 ####

./zkCli.sh -server ip:port

![e605e99c16aa4e92be0940a5206b4ccc.png][]

#### 2、断开连接：quit ####

![a66007610da640bda18d80e1e23ad075.png][]

#### 3、查看命令帮助：help ####

![52acacdd44d349969110c2568510ffc0.png][]

#### 4、显示指定目录下节点：ls 目录 ####

![085250057f7e4d9e93e313948e006909.png][]

#### 5、创建节点：create /节点path value ####

![41f405a7824f4a938d8e506b25bf0289.png][]

#### 6、获取节点值：get /节点path ####

![f66f5216ac524f34a9253cf960579317.png][]

####  **7、设置节点：set /节点path value** ####

![05c55afa89ad4ce695ac2e63d851d5d8.png][]

#### 8、删除单个节点：delete /节点path ####

![9aa91fbd43a348d1b0c8e4d591eb0705.png][]

#### 9、删除带有子节点的节点：deleteall/节点path ####

![e55b9fae05bf485eacc1c64f6bc9d756.png][]

#### 10、创建临时节点：create -e /节点path value ####

![d9f99ecd2049444bba7ac89275f5a89f.png][]

#### 11、创建顺序节点：create -s /节点path value ####

![1d4d15dd2ed44010a6ce1caa12728701.png][]

#### 12、查询节点详细信息：get /节点path ####

![b3984dd122fe4f4591eec97f066315ac.png][]

![66b4399a193b476aaf19c26a12a73c06.png][]

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