[大数据]zookeeper集群搭建

1. 下载并解压安装

zookeeper官网下载：https://downloads.apache.org/zookeeper/

2. 修改配置文件

cd /usr/local/apache-zookeeper-3.6.2-bin/conf && cp -ra zoo_sample.cfg zoo.cfg && cat zoo.cfg

# 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=/usr/zookeeper/dataDir
dataLogDir=/usr/zookeeper/dataLogDir
# 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
tickTime=2000
initLimit=10
syncLimit=5

# server.id=host:port:port
# id:是服务器编号;host是服务器ip;port是Leader选举的端口;port是zk服务器之间的通信端口
server.0=172.50.1.211:2888:3888
server.1=172.50.1.212:2888:3888
server.2=172.50.1.218:2888:3888

3. create myid 文件

在三台机器上分别执行

echo 0 > /usr/zookeeper/dataDir/myid

echo 1 > /usr/zookeeper/dataDir/myid

echo 2 > /usr/zookeeper/dataDir/myid

4. 配置环境变量

# 三台机器都要执行
[root@localhost ~]# cat > /etc/profile.d/zk_env.sh << EOF
export ZK_HOME=/usr/local/apache-zookeeper-3.6.2-bin
export PATH=$PATH:$ZK_HOME/bin
EOF

# 刷新环境变量生效
[root@localhost ~]# source /etc/profile

5. 启动zookeeper服务

# 启动
[root@localhost ~]# zkServer.sh start

# 停止
[root@localhost ~]# zkServer.sh stop

# 重启
[root@localhost ~]# zkServer.sh restart

# 查看集群状态
[root@localhost ~]# zkServer.sh status