1、Zookeeper的安装部署

C:\Windows\System32\drivers\etc\hosts中配置的内容如下：

192.168.106.80      hadoop

192.168.106.81      hadoop2

192.168.106.82      hadoop3

# 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=/home/tuzq/software/zookeeper/zkdata

dataLogDir=/home/tuzq/software/zookeeper/log

# the port at which the clients will connect

clientPort=2181

#

# 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

server.1= hadoop:2888:3888

server.2= hadoop2:2888:3888

server.3= hadoop3:2888:3888

参数说明：

tickTime：zookeeper中使用的基本时间单位, 毫秒值.

initLimit: zookeeper集群中的包含多台server, 其中一台为leader, 集群中其余的server为follower。 initLimit参数配置初始化连接时, follower和leader之间的最长心跳时间. 此时该参数设置为5, 说明时间限制为5倍tickTime, 即5*2000=10000ms=10s.

syncLimit: 该参数配置leader和follower之间发送消息, 请求和应答的最大时间长度. 此时该参数设置为2, 说明时间限制为2倍tickTime, 即4000ms.

dataDir: 数据存放目录. 可以是任意目录.但是我喜欢这么干

dataLogDir: log目录, 同样可以是任意目录. 如果没有设置该参数, 将使用和dataDir相同的设置

clientPort: 监听client连接的端口号.

server.X=A:B:C 其中X是一个数字, 表示这是第几号server. A是该server所在的IP地址. B配置该server和集群中的leader交换消息所使用的端口. C配置选举leader时所使用的端口. 由于配置的是伪集群模式, 所以各个server的B, C参数必须不同.

[root@hadoop zkdata]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.106.80      hadoop

192.168.106.81      hadoop2

192.168.106.82      hadoop3

[root@hadoop2 zkdata]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.106.80      hadoop

192.168.106.81      hadoop2

192.168.106.82      hadoop3

#!/bin/bash

for host in "hadoop hadoop2 hadoop3"

do

    ssh $host "source /etc/profile;/home/tuzq/software/zookeeper/bin/zkServer.sh   start"

done