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
在${ZOOKEEPER_HOME}/conf目录下 执行 cp zoo_sample.cfg zoo.cfg
修改该文件 如下：
$ 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
$ 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
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