hadoop install

base on unbuntu 1604

1. add hadoop user

    useradd -m hadoop -s /bin/bash

    adduser hadoop sudo

2. set ssh connetion no password

    cd ~/.ssh/;ssh-keygen -t rsa;cat id_rsa.pub >> authorized_keys

3. install jdk

    apt-get install default-jdk

4. configure java env

    vi /root/.bashrc    

    source /root/.bashrc

    export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/
    export JRE_HOME=${JAVA_HOME}/jre
    export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
    export PATH=${JAVA_HOME}/bin:$PATH

5. install hadoop

    link: https://www.digitalocean.com/community/tutorials/how-to-install-hadoop-in-stand-alone-mode-on-ubuntu-16-04

reference:

http://www.ityouknow.com/hadoop/2017/07/24/hadoop-cluster-setup.html