centos7-安装包方式安装zookeeper

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本文详细介绍了如何在CentOS7.5环境中安装和配置Zookeeper 3.4.6版本，包括下载、解压、环境变量设置、配置文件修改以及服务的启动、状态检查和重启等操作流程。

基础环境

centos7.5 + zookeeper-3.4.6

步骤

下载zookeeper-3.4.6.tar.gz

解压缩到自己项目目录

tar -zxvf zookeeper-3.4.6.tar.gz
mv zookeeper-3.4.6 /usr/local/services/zookeeper  #更改为自己的项目目录

配置启动文件

cd /usr/local/services/zookeeper/conf
cp zoo_sample.cfg zoo.cfg     #复制配置样本到我们自己的配置文件

vim zoo.cfg

>>>
    # zookeeper 定义的基准时间间隔，单位：毫秒
    tickTime=2000
    # The number of ticks that the initial
    # synchronization phase can take
    initLimit=10
    # The number of ticks that can pass between
    # sending a request and getting an acknowledgement
    syncLimit=5
    # 数据文件夹
    dataDir=/usr/local/services/zookeeper/data
    # 日志文件夹
    dataLogDir=/usr/local/services/zookeeper/logs	   #要手动创建这个文件夹，否则会出错
    # 客户端访问 zookeeper 的端口号
    clientPort=2181

配置环境变量

vim /etc/profile

>>>>追加
    export ZOOKEEPER_HOME=/usr/local/services/zookeeper/
    export PATH=$ZOOKEEPER_HOME/bin:$PATH
    export PATH

# 使文件生效
source /etc/profile

启动服务

zkServer.sh start

如打印如下信息则表明启动成功：
ZooKeeper JMX enabled by default
Using config: /usr/local/services/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看服务状态
```
zkServer.sh status
```

关闭服务

zkServer.sh stop

如打印如下信息则表明成功关闭：
ZooKeeper JMX enabled by default
Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

重启服务

zkServer.sh restart

如打印如下信息则表明重启成功：
ZooKeeper JMX enabled by default
Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
ZooKeeper JMX enabled by default
Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
ZooKeeper JMX enabled by default
Using config: /usr/local/services/zookeeper/zookeeper-3.4.9/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED