Zookeeper集群环境安装

1.集群机器配置

主机名	IP
namenode	192.168.1.250
datanode1	192.168.1.237
datanode2	192.168.1.251

2.上述机器上分别安装Hadoop的集群，不在累述。其中namenode为master，其他为slave

3.下载zookeeper-3.3.5.tar.gz，下面以namenode为例

解压到/home/wilian目录下 tar -xzvf  zookeeper-3.3.5.tar.gz

4.设置环境变量

export ZOOKEEPER_HOME=/home/wilian/zookeeper-3.3.5

export PATH=$PATH:$ZOOKEEPER_HOME/bin

5.配置zoo.conf文件

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在${ZOOKEEPER_HOME}/conf目录下 执行 cp zoo_sample.cfg zoo.cfg

修改该文件 如下：

[wilian@localhost conf]$ cat zoo.cfg
# 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.
dataDir=/home/wilian/zookeeper-3.3.5/data
# the port at which the clients will connect
clientPort=2181
dataLogDir=/home/wilian/zookeeper-3.3.5/log
server.1=192.168.1.250:2888:3888
server.2=192.168.1.237:2888:3888
server.3=192.168.1.251:2888:3888

 

5.配置myid文件

在 ${ZOOKEEPER_HOME} /data创建myid文件

内容为zoo.conf中主机对应的ID

[wilian@localhost data]$ cat myid 

1

6.将zookeeper-3.3.5文件夹传输到其他机器上

scp -r zookeeper-3.3.5 datanode1:/home/wilian 

scp -r zookeeper-3.3.5 datanode2:/home/wilian 

7.按照步骤5修改myid文件，并按照步骤4设置每台机器的环境变量

8.依次启动每个机器的zookeeper，速度要快

bin/zkServer.sh start

9.运行bin/zkServer.sh status检查启动状况或用jps检查会发现多了QuorumPeerMain进程