在centos中部署zookeeper的流程如下:
Zookeeper的正常运行依赖于Java环境,推荐在CentOS系统中安装OpenJDK 8或更高版本。可以执行以下命令完成安装:
sudo yum install java-1.8.0-openjdk-devel
访问Apache Zookeeper官网,下载适合的Zookeeper版本压缩包,例如zookeeper-3.8.0版本,然后将其解压至指定路径:
wget https://dlcdn.apache.org/zookeeper/zookeeper-3.8.0/apache-zookeeper-3.8.0-bin.tar.gz tar -zxvf apache-zookeeper-3.8.0-bin.tar.gz
切换到解压后的Zookeeper目录,将默认的zoo_sample.cfg配置文件重命名为zoo.cfg,并根据实际情况调整以下关键参数:
示例配置如下:
tickTime=2000 dataDir=/var/lib/zookeeper clientPort=2181 initLimit=10 syncLimit=5
若要搭建Zookeeper集群,需在zoo.cfg中添加server.N属性,N代表节点编号。例如:
server.1=192.168.0.11:2888:3888 server.2=192.168.0.12:2888:3888 server.3=192.168.0.13:2888:3888
在每个节点的dataDir目录下创建名为myid的文件,用于标识当前节点的唯一编号。例如:
echo 1 > /var/lib/zookeeper/myid echo 2 > /var/lib/zookeeper/myid echo 3 > /var/lib/zookeeper/myid
创建并编辑zookeeper.service文件,确保Zookeeper服务在系统重启后自动启动:
[Unit] Description=Zookeeper Service After=network.target [Service] Type=forking ExecStart=/usr/local/zookeeper/bin/zkServer.sh start ExecStop=/usr/local/zookeeper/bin/zkServer.sh stop PrivateTmp=true Environment=JAVA_HOME=/usr/local/java/jdk1.8.0_202 User=zookeeper Group=zookeeper PIDFile=/var/run/zookeeper/zookeeper.pid Restart=always [Install] WantedBy=multi-user.target
将此文件保存至/etc/systemd/system/目录,并启用服务:
sudo systemctl enable zookeeper.service sudo systemctl start zookeeper.service sudo systemctl status zookeeper.service
最后,通过以下命令启动Zookeeper并确认其运行状态:
/usr/local/zookeeper/bin/zkServer.sh start /usr/local/zookeeper/bin/zkServer.sh status
按照上述步骤操作,即可在CentOS环境中顺利完成Zookeeper的安装与配置。请依据具体需求灵活调整相关配置参数。
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