2）zookeeper集羣搭建

1.安裝zk

解壓縮

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

配置環境變量

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.設置節點標識

cd /opt/zk
mkdir data
cd data
vi myid

    0

4.二三節點配置

複製zk目錄到二三節點

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

複製環境變量到二三節點

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

修改二三節點myid

    二三節點myid分別改成一、2

5.啓動

分別在三臺機器上執行：zkServer.sh start

檢查ZooKeeper狀態：zkServer.sh status

    其中一個爲leader其餘爲follower

使用jsp驗證

    Hadoop001:QuorumPeerMain

    Hadoop002:QuorumPeerMain

    Hadoop003:QuorumPeerMain