Linux下ZooKeeper分布式集群安装教程

苏真文 發表於 2023-8-14 00:00:00

<p>
ZooKeeper 就是动物园管理员的意思，它是用来管理 Hadoop（大象）、Hive（蜜蜂）、pig（小猪）的管理员，Apache Hbase、Apache Solr、Dubbo 都用到了 ZooKeeper，其实就是一个集群管理工具，是集群的入口。ZooKeeper 是一个分布式的、开源的程序协调服务，是 Hadoop 项目下的一个子项目。ZooKeeper 主要应用场景包括集群管理（主从管理、负载均衡、高可用的管理）、配置文件的集中管理、分布式锁、注册中心等。实际项目中，为了保证高可用，ZooKeeper 都是以分布式集群的方式进行安装的，至少需要三个节点，下面具体来看下。</p>
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这里 Linux 选择 CentOS 7.2。</p>
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<code class="bash comments"># wget -P /usr/local http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.10/zookeeper-3.4.10.tar.gz</code>
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<code class="bash comments"># cd /usr/local</code>
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<code class="bash comments"># tar -zxvf zookeeper-3.4.10.tar.gz</code>
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<code class="bash comments"># cd zookeeper-3.4.10</code>
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<code class="bash comments"># mkdir data</code>
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<code class="bash comments"># mkdir logs</code>
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<code class="bash comments"># vim /etc/rc.d/rc.local //配置开启自启动</code>
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追加如下配置即可：</p>
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<code class="bash functions">export</code> <code class="bash plain">JAVA_HOME=</code><code class="bash plain">/usr/java/jdk</code>
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<code class="bash plain">/usr/local/zookeeper-3</code><code class="bash plain">.4.10</code><code class="bash plain">/bin/zkServer</code><code class="bash plain">.sh start</code>
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我们在三台不同的服务器上各部署一个 ZooKeeper 进程，以构成一个 ZooKeeper 集群。三个 ZooKeeper 进程均使用相同的 zoo.cfg 配置：</p>
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<code class="bash comments"># cd /usr/local/zookeeper-3.4.10/conf</code>
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<code class="bash comments"># cp zoo_sample.cfg zoo.cfg             //拷贝配置文件</code>
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<code class="bash comments"># vim zoo.cfg</code>
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修改配置如下：</p>
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<code class="bash comments"># 配置存储快照文件的目录</code>
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<code class="bash plain">dataDir=</code><code class="bash plain">/usr/local/zookeeper-3</code><code class="bash plain">.4.10</code><code class="bash plain">/data</code>
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<code class="bash plain">dataLogDir=</code><code class="bash plain">/usr/local/zookeeper-3</code><code class="bash plain">.4.10</code><code class="bash plain">/logs</code>
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<code class="bash comments"># zk服务进程监听的TCP端口</code>
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<code class="bash plain">clientPort=2181</code>
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<code class="bash comments"># 2888:ZooKeeper服务之间通信的端口,3888:ZooKeeper与其他应用程序通信的端口</code>
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<code class="bash comments"># server.1:表示这是第几号服务器</code>
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<code class="bash plain">server.1=192.168.20.11:2888:3888</code>
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<code class="bash plain">server.2=192.168.20.12:2888:3888</code>
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<code class="bash plain">server.3=192.168.20.13:2888:3888</code>
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然后在三台服务器 dataDir 目录下，分别创建一个 myid 文件，其内容分别为1，2，3。然后分别在这三台机器上启动 ZooKeeper 进程，这样我们便将 ZooKeeper 集群启动了起来。如下：</p>
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<code class="bash comments"># cd /usr/local/zookeeper-3.4.10/data</code>
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<code class="bash comments"># echo 1 >>myid                    //创建myid文件并写入1</code>
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<code class="bash comments"># /usr/local/zookeeper-3.4.10/bin/zkServer.sh start //后台启动ZooKeeper</code>
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<p>
还有一些其他命令如下：</p>
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<code class="bash comments"># /usr/local/zookeeper-3.4.10/bin/zkServer.sh stop   //关闭ZooKeeper</code>
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<code class="bash comments"># /usr/local/zookeeper-3.4.10/bin/zkServer.sh status //查看服务状态</code>
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<code class="bash comments"># /usr/local/zookeeper-3.4.10/bin/zkServer.sh start-foreground //前台启动</code>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。</p>
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原文链接：http://blog.csdn.net/smartbetter/article/details/53083816</p>

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Linux下ZooKeeper分布式集群安装教程