zookeeper下载、安装以及配置环境
    1 搜索zookeeper
    http://zookeeper.apache.org/
    2-2 zookeeper的下载与安装 - 图1
    2-2 zookeeper的下载与安装 - 图2
    2-2 zookeeper的下载与安装 - 图3
    2-2 zookeeper的下载与安装 - 图4
    单机安装zookeeper
    1 将zookeeper上传到 linux家目录:
    2-2 zookeeper的下载与安装 - 图5
    2-2 zookeeper的下载与安装 - 图6
    解压 zookeeper命令:
    tar -zxvf zookeeper-3.4.11.tar.gz
    2-2 zookeeper的下载与安装 - 图7

    对解压后的文件重命名:zookeeper-3.4.11 重命名为zookeeper
    mv zookeeper-3.4.11 zookeeper // mv z 按Tab键 z再次按Tab键
    2-2 zookeeper的下载与安装 - 图8

    将zookeeper文件夹移动到/usr/local,很多应用都应该安装到/usr/local
    2-2 zookeeper的下载与安装 - 图9
    配置环境变量:
    vim /etc/profile

    1. export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL
    2. export JAVA_HOME=/usr/jdk8
    3. export ZOOKEEPER_HOME=/usr/local/zookeeper
    4. export CLASSPATH=.:%JAVA_HOME%lib/dt.jar:%JAVA_HOME%/lib/tools.jar
    5. export PATH=$PATH:$JAVA_HOME/bin:$ZOOKEEPER_HOME/bin

    2-2 zookeeper的下载与安装 - 图10
    配置好后,按Esc键,shift+:wq 保存并且推出