zookeeper安装

1. 首先下载zookeeper-3.4.5.tar.gz, 解压到/usr/local/bg文件夹下

2. 创建一个文件夹用于存储zookeeper数据，如：/usr/local/bg/zookeeper-3.4.5/data

3. 创建一个文件夹用于存储zookeeperlog，如：/usr/local/bg/zookeeper-3.4.5/log

4. 拷贝zookeeper下conf文件夹的zoo_sample.cfg，并重命名为zoo.cfg，内容为：

# 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=/usr/local/bg/zookeeper-3.4.5/data

dataLogDir=/usr/local/bg/zookeeper-3.4.5/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=bg01:2888:3888

server.2=bg02:2888:3888

server.3=bg03:2888:3888

server.4=bg04:2888:3888

最后几行如果不懂可以参考 http://blog.youkuaiyun.com/jthink_/article/details/38622297

5. 把配置好的zookeeper文件夹scp到其他节点机器，其实就是每台机器上都有这个zookeeper

6. 在zookeeper下的data文件夹创建一个myid的文件，内容为

server.1=bg01:2888:3888

server.2=bg02:2888:3888

server.3=bg03:2888:3888

server.4=bg04:2888:3888

这个配置文件server.1中的1，以此类推，如：bg01就是1，bg02就是2等等

7. 设置环境变量

sudo vim /etc/profile

# set the zookeeper environment
export ZOOKEEPER_HOME=/usr/local/bg/zookeeper-3.4.5
export PATH=$PATH:$ZOOKEEPER_HOME/bin

8. 配置完成，在每个节点上可以运行，

zkServer.sh start

jps查看如果有QuorumPeerMain这个进程就是对了

停止zookeeper：zkServer.sh stop

9. 安装hbase必须要有zookeeper来管理