zookeeper环境搭建

单机模式

不作演示

伪集群模式

在一台服务器上运行多个zookeeper，设置不同端口即可，与集群模式类似

集群模式

1. 下载 http://zookeeper.apache.org/releases.html

2. 解压，比如解压到 /opt 目录下

3. 在zookeeper目录下创建 data, logs目录

4. 修改配置文件名 conf目录下 mv zoo_sample.cfg zoo.cfg

5. 在每个data目录下创建一个myid文件，内容分别为1, 2, 3, …用于记录每个服务器的id

6. 在每个zoo.cfg配置端口等信息,配置文件示例如下

   # The number of milliseconds of each tick
   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
   # the directory where the snapshot is stored.
   # do not use /tmp for storage, /tmp here is just 
   # example sakes.
   dataDir=/opt/zookeeper/data
   dataLogDir=/opt/zookeeper/logs
   # the port at which the clients will connect
   clientPort=2181
   # the maximum number of client connections.
   # increase this if you need to handle more clients
   #maxClientCnxns=60
   #
   # Be sure to read the maintenance section of the 
   # administrator guide before turning on autopurge.
   #
   # http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
   #
   # The number of snapshots to retain in dataDir
   #autopurge.snapRetainCount=3
   # Purge task interval in hours
   # Set to "0" to disable auto purge feature
   #autopurge.purgeInterval=1
   
   ## Metrics Providers
   #
   # https://prometheus.io Metrics Exporter
   #metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
   #metricsProvider.httpPort=7000
   #metricsProvider.exportJvmInfo=true
   server.1=0.0.0.0:2888:3888 #当前服务器ip
   server.2=*.*.*.*:2888:3888 #其他服务咕咕Ip
   server.3=*.*.*.*:2888:3888

7. 依次启动各个实例