1.版本概述
windows: win10
zookeeper:3.5.5(目前最新版本)
2.下载过程
zookeeper稳定版下载链接 https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/stable/，进入页面如下：
我下载了apache-zookeeper-3.5.5-bin.tar.gz，下载完成后直接解压，解压后首先添加data和logs两个文件夹,添加完成后目录如下：
见名知意，data目录是用来存放数据的，logs目录是用来存放日志的，后面会用到这两个目录
- 修改配置文件
进入conf文件夹，复制一份zoo_sample.cfg文件并改名为，使用Notepad++打开zoo.cfg，打开后内容如下：
# 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=/tmp/zookeeper
# 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
修改dataDir并添加一个dataLogDir,dataDir修改为刚才添加的data目录，dataLogDir则指向添加的logs目录，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.
#================修改部分===========================
dataDir=F://zookeeper//apache-zookeeper-3.5.5-bin//data
dataLogDir=F://zookeeper//apache-zookeeper-3.5.5-bin//logs
#================修改部分===========================
# 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
注意:
dataDir和dataLogDir的路径必须是用\\隔开，如果我们直接复制粘贴这两个文件夹的路径，文件夹的层级是用/隔开的，问题是F:\zookeeper\apache-zookeeper-3.5.5-bin\data和F:\zookeeper\apache-zookeeper-3.5.5-bin\logs这两个路径没有起作用，要想验证的话，启动服务器就知道了。
名词解释：
-
tickTime：一个时间长度的时间，单位是ms,后面的initLimit和syncLimit的单位都是时间长度 -
initLimit: 集群环境下，follower服务器连接到leader服务器的最大时间长度，本例设置为10，那么时间就是10*2（ticktime）=20，单位是s -
syncLimit:集群环境下，follower服务器发送请求到leader服务器响应的时间长度，本例设置为5，那么时间就是5*2（ticktime）=10，单位是s
3.启动
按win+x选择命令行窗口或者window power shell,也可以用win+r打开“运行“，然后输入cmd来打开命令行窗口，将地址切换到zookeeper的bin目录下，输入命令zkserver启动zookeeper，
也可以给zookeeper配置环境变量，配置一个%ZOOKEEPER_HOME%，路径为F:\zookeeper\apache-zookeeper-3.5.5-bin,再给path添加一个%ZOOKEEPER_HOME%\bin,这样每次用命令行启动zookeeper会方便一点
启动后，界面如下：
注意看最后的几行启动日志
这样可能看不出什么，挺正常的，但是如果把zoo.cfg文件的dataDir和dataLogDir的路径设置分别成F:\zookeeper\apache-zookeeper-3.5.5-bin\data和F:\zookeeper\apache-zookeeper-3.5.5-bin\logs,这两行日志就会变成这样：
也就是说路径配置错误，zookeeper会默认把data文件和log文件在bin目录下再分别创建一个新文件夹，大家可以试试。
