zookeeper安装

1.         Zookeeper服务集群规模不小于三个节点，要求各服务之间系统时间要保持一致。

2.         在m1的usr/local目录下，解压缩zookeeper（执行命令tar –zvxf zookeeper.tar.gz）

3.         设置环境变量

打开/etc/profile文件！内容如下：

#set java & hadoop
export JAVA_HOME=/usr/local/program/jdk
export HADOOP_HOME=/usr/local/program/hadoop
export ZOOKEEPER_HOME=/usr/local/program/zookeeper
export PATH=.:$HADOOP_HOME/bin:$ZOOKEEPER_HOME/bin:$JAVA_HOME/bin:$PATH

注：修改完后profile记得执行source /etc/profile

4.         在解压后的zookeeper的目录下进入conf目录修改配置文件(zk版本为：zookeeprer-3.4.6)

更名操作：mv zoo_sample.cfg zoo.cfg

5.         编辑zoo.cfg (vi zoo.cfg)

修改dataDir=/usr/local/program/zookeeper/data/

新增server.0=m1:2888:3888

         server.1=s1:2888:3888

         server.2=s2:2888:3888

文件如下：

# 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=/usr/local/program/zookeeper/data

# 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.0=m1:2888:3888

server.1=s1:2888:3888

server.2=s2:2888:3888

 

  注：

server.0=m1:2888:3888
server.1=s1:2888:3888
server.2=s2:2888:3888

这三行为配置zookeeper集群的机器（m1、s1、s2）分别用server.0和server.1、server.2标识，2888和3888为端口号（zookeeper集群包含一个leader(领导)和多个fllower(随从)，启动zookeeper集群时会随机分配端口号，分配的端口号为2888的为leader，端口号为3888的是fllower）

 

6.         创建文件夹mkdir /usr/local/program/zookeeper/data

7.         在data目录下，创建文件myid，值为0  (0用来标识m1这台机器的zookeeper )

到此为止 m1上的配置就已经完成；接下来配置s1和s2.

 

8.         把zookeeper目录复制到s1和s2中（scp –r /usr/local/program/zookeeper s1:/usr/local/program/zookeeper）

9.         把修改后的etc/profile文件复制到s1和s2中

（复制完后记得在s1和s2中执行命令source /etc/profile）

10.     把s1中相应的myid中的值改为1，s2中相应的myid中的值改为2

11.     启动，在三个节点上分别执行命令zkServer.sh  start

12.     检验，在三个节点上分别执行命令zkServer.sh  status

zookeeper的shell操作

启动zookeeper：zkServer.sh  start

进入zookeeper：zkCli.sh