首先需要安装jdk，参考之前的文章：Ubuntu 13.10-14.10 安装Oralce JDK

然后下载最新稳定版本到/opt目录

/opt$ wget http://mirrors.cnnic.cn/apache/zookeeper/stable/zookeeper-3.4.6.tar.gz

解压目录：

tar zxvf zookeeper-3.4.6.tar.gz 

解压后的目录结构为：

/opt/zookeeper-3.4.6$ tree -L 1
.
├── bin
├── build.xml
├── CHANGES.txt
├── conf
├── contrib
├── dist-maven
├── docs
├── ivysettings.xml
├── ivy.xml
├── lib
├── LICENSE.txt
├── NOTICE.txt
├── README_packaging.txt
├── README.txt
├── recipes
├── src
├── zookeeper-3.4.6.jar
├── zookeeper-3.4.6.jar.asc
├── zookeeper-3.4.6.jar.md5
└── zookeeper-3.4.6.jar.sha1

进入conf目录，复制sample配置文件

cd conf/
$ cp zoo_sample.cfg zoo.cfg

编辑zoo.cfg文件，修改data目录路径，注释都解释了各个参数的作用：

# 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/zk_data
# the port at which the clients will connect
clientPort=2181

创建目录

mkdir /opt/zk_data

现在启动服务吧：

:/opt/zookeeper-3.4.6/conf$ cd ..
:/opt/zookeeper-3.4.6$ bin/zkServer.sh start
JMX enabled by default
Using config: /opt/zookeeper-3.4.6/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

启动后会在dataDir目录下创建文件包含进程ID

$ cat /opt/zk_data/zookeeper_server.pid 
4800

下面的命令可以关闭该服务

bin/zkServer.sh stop
JMX enabled by default
Using config: /opt/zookeeper-3.4.6/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED

看脚本会发现通过读取进程ID文件得到ID，然后kill掉，最后删除进程ID文件。