1. 下载并解压ZooKeeper-3.4.10.tar.gz到"/opt"路径下
tar -zxvf zookeeper-3.4.10.tar.gz
2. 在$ZOOKEEPER_HOME/conf目录下创建zoo.cfg文件，添加内容如下：
# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/zookeeper-3.4.10/data
# the port at which the clients will connect
clientPort=2181
server.1=zk1:2888:3888
server.2=zk2:2888:3888
server.3=zk3:2888:3888
3. 在zoo.cfg配置的dataDir路径下创建文件myid
(/opt/zookeeper-3.4.10/data/myid),里面内容为一个数字，用来标识当前主机，$ZOOKEEPER_HOME/conf/zoo.cfg文件中配置的server.X，则myid文件中就输入这个数字X。（即在每个节点上新建并设置文件myid，其内容与zoo.cfg中的id相对应）这里master节点为 1
4.将conf/log4j.properties文件对应位置修改成以下状态：
# Define some default values that can be overridden by system
properties
zookeeper.root.logger=INFO, ROLLINGFILE
# Add ROLLINGFILE to rootLogger to get log file output
# Log DEBUG level and above messages to a log file
log4j.appender.ROLLINGFILE=org.apache.log4j.DailyRollingFileAppender
5. 将bin/zkEvn.sh文件对应位置修改成以下状态
if [ "x${ZOO_LOG_DIR}" = "x" ]
then
ZOO_LOG_DIR="$ZOOBINDIR/../logs"
fi
if [ "x${ZOO_LOG4J_PROP}" = "x" ]
then
ZOO_LOG4J_PROP="INFO,ROLLINGFILE"
fi
6. 在每个节点配置/etc/hosts （并保证每个节点/etc/hostname中分别为zk1、zk2、zk3） 主机 -IP地址映射
192.168.174.125 zk1
192.168.174.126 zk2
192.168.174.128 zk3
7. 在每个节点配置环境变量/etc/profile
#Set ZOOKEEPER_HOME ENVIRONMENT
export ZOOKEEPER_HOME=/opt/zookeeper-3.4.10
export PATH=$PATH:$ZOOKEEPER_HOME/bin
8. 启动
在每个节点上$ZOOKEEPER_HOME目录下
运行:
./zkServer.sh start
查看：
./zkServer.sh status
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follower
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