基本环境：

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redhat6.4
jdk1.7 已配置环境变量
三台主机IP分别是：192.168.0.2 192.168.0.3 192.168.0.4
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配置过程如下：
1.解压zookeeper压缩包至目录下，假设解压后为/opt/zookeeper-3.4.6
2.配置环境变量:

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export ZOOKEEPER_HOME=/opt/zookeeper-3.4.6
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3.修改ZOOKEEPER_HOME/conf/zoo.cfg配置文件，配置文件如下：

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The number of milliseconds of each tick

#作为服务器客户端之间维持心跳的时间间隔
tickTime=2000

The number of ticks that the initial

synchronization phase can take

#最长忍受10个心跳时间后超时
initLimit=10

The number of ticks that can pass between

sending a request and getting an acknowledgement

#请求与应答时间的时间长度，超过就超时
syncLimit=5
#server.A=192.168.0.2:3888:3988 A表示服务器顺序，中间是IP 3888是端口，3988表示leader服务器挂了之后，用这个端口执行选举时服务器相互通信的端口
server.1=192.168.0.2:2888:3888
server.2=192.168.0.3:2888:3888
server.3=192.168.0.4:2888:3888

the directory where the snapshot is stored.

do not use /tmp for storage, /tmp here is just

example sakes.

#Zookeeper保存数据的目录
dataDir=/opt/zookeeper_data/data
dataLogDir=/opt/zookeeper_data/logs

the port at which the clients will connect

#客户端连接zookeeper服务器的端口
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
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4.scp该目录到另外两台机器
5.创建如下目录
dataDir=/opt/zookeeper_data/data
dataLogDir=/opt/zookeeper_data/logs
然后在/opt/zookeeper_data/data目录下创建myid文件，并且在里面写入机器的顺序，比如zoo.cfg中所对应的server.1的机器的文件中写1。
6.分别启动zookeeper程序。

[java]
$ZOOKEEPER_HOME/bin/zkServer.sh start
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7.检验是否启动成功

[java]
$ZOOKEEPER_HOME/bin/zkServer.sh status
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会看到如下两种结果
Mode: leader 或者follower
意思显而易见。