2）zookeeper集群搭建

1.安装zk

解压缩

tar -zxvf zookeeper-3.4.8.tar.gz
mv zookeeper-3.4.8 zk

配置环境变量

vi ~/.bashrc

export ZOOKEEPER_HOME=/opt/zk

export PATH=$ZOOKEEPER_HOME/bin

source ~/.bashrc

2.配置zoo.cfg

cd /opt/zk/conf
mv zoo_sample.cfg zoo.cfg
vi zoo.cfg

    修改：

    dataDir=/opt/zk/data

    新增：

    server.0=hadoop001:2888:3888   

    server.1=hadoop002:2888:3888

    server.2=hadoop003:2888:3888

3.设置节点标识

cd /opt/zk
mkdir data
cd data
vi myid

    0

4.二三节点配置

复制zk目录到二三节点

cd /opt
scp -r zk hadoop002:/opt
scp -r zk hadoop003:/opt

复制环境变量到二三节点

scp ~/.bashrc hadoop002:~
scp ~/.bashrc hadoop003:~

修改二三节点myid

    二三节点myid分别改成一、2

5.启动

分别在三台机器上执行：zkServer.sh start

检查ZooKeeper状态：zkServer.sh status

    其中一个为leader其余为follower

使用jsp验证

    Hadoop001:QuorumPeerMain

    Hadoop002:QuorumPeerMain

    Hadoop003:QuorumPeerMain