zookeeper集群&伪集群搭建

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本文详细介绍了如何从官网下载并配置Apache ZooKeeper 3.5.8版本，包括修改myid文件、zoo.cfg，以及创建伪集群启动脚本，启动和查看状态。涵盖了基本的命令行操作，如节点查看、创建、修改和删除。

伪集群：

一、zookeeper前提

1、zk安装包来源

a、官网下载 
https://www.apache.org/dyn/closer.lua/zookeeper/zookeeper-3.5.9/apache-zookeeper-3.5.9-bin.tar.gz
![在这里插入图片描述](https://img-blog.csdnimg.cn/20210222203138947.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L05laWdoYm9yX0w=,size_16,color_FFFFFF,t_70)
 b、其他途径下载
 本人直接用公司SVN上的zk 3.5.8版本： apache-zookeeper-3.5.8-bin.zip

2、基础环境

安装目录/app下
基于办公本的虚拟机，软硬件如图
在这里插入图片描述

3、解压&复制

unzip apache-zookeeper-3.5.8-bin.zip -d /app 
echo "apache-zookeeper-3.5.8-bin-2 apache-zookeeper-3.5.8-bin-3"|xargs -n 1 cp -vr apache-zookeeper-3.5.8-bin/  #复制伪集群三节点

二、zookeeper配置

1、修改myid文件

[lee@localhost app]$ find /app/apache-zookeeper-3.5.8-bin*  -name "myid"
/app/apache-zookeeper-3.5.8-bin/data/myid
/app/apache-zookeeper-3.5.8-bin-2/data/myid
/app/apache-zookeeper-3.5.8-bin-3/data/myid

echo "1" > /app/apache-zookeeper-3.5.8-bin/data/myid
echo "2" > /app/apache-zookeeper-3.5.8-bin-2/data/myid
echo "3" > /app/apache-zookeeper-3.5.8-bin-3/data/myid

2、修改zoo.cfg

cd apache-zookeeper-3.5.8-bin/conf/
cp zoo_sample.cfg  zoo.cfg
vim zoo.cfg       #修改zk配置项
find /app/apache-zookeeper-3.5.8-bin* -name "zoo.cfg" | xargs -n1 cat |grep -Ev '^$|#'  #查看伪集群配置文件

在这里插入图片描述

注意：

1、修改dataDir和dataLogDir配置目录
2、修改server.id和地址(id的值和myid中的值一致)
3、注意clientPort 伪集群的端口占用情况(2181\2182\2183)

三、zookeeper启动

1、编辑伪集群启动文件

touch zkStart.sh

echo "/app/apache-zookeeper-3.5.8-bin/bin/zkServer.sh  start" >> zkStart.sh
echo "sleep 5" >>zkStart.sh
echo "/app/apache-zookeeper-3.5.8-bin-2/bin/zkServer.sh  start" >> zkStart.sh
echo "sleep 5" >>zkStart.sh
echo "/app/apache-zookeeper-3.5.8-bin-3/bin/zkServer.sh  start" >> zkStart.sh

2、启动

[lee@localhost app]$ sh zkStart.sh
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin-2/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin-3/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

3、编辑伪集群状态文件

[lee@localhost app]$ sed -i 's/start/status/g' zkStatus.sh
/app/apache-zookeeper-3.5.8-bin/bin/zkServer.sh  status
sleep 5
/app/apache-zookeeper-3.5.8-bin-2/bin/zkServer.sh  status
sleep 5
/app/apache-zookeeper-3.5.8-bin-3/bin/zkServer.sh  status

[lee@localhost app]$ sh zkStatus.sh
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: leader
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin-2/bin/../conf/zoo.cfg
Client port found: 2182. Client address: localhost.
Mode: follower
ZooKeeper JMX enabled by default
Using config: /app/apache-zookeeper-3.5.8-bin-3/bin/../conf/zoo.cfg
Client port found: 2183. Client address: localhost.
Mode: follower

四、zookeeper常用命令行

1.ls -- 查看zk节点：
[zk: 127.0.0.1:2181(CONNECTED) 1] ls /

2.ls -s  查看zk节点，可查看到time、version等信息：
[zk: 127.0.0.1:2181(CONNECTED) 1] ls2 /

3.create -- 创建znode，并设置初始内容：
[zk: 127.0.0.1:2181(CONNECTED) 1] create /test "test"
Created /test

4.get -- 获取znode的数据：
[zk: 127.0.0.1:2181(CONNECTED) 1] get /test

5.set -- 修改znode内容：
[zk: 127.0.0.1:2181(CONNECTED) 1] set /test "ricky"

6.delete -- 删除znode：
[zk: 127.0.0.1:2181(CONNECTED) 1] delete /test

7.quit -- 退出客户端```