How-to Install Hadoop on Oracle Linux 6.X 32/64bit Step-by-Step Guide

February 12th, 2014 by thelinuxevangelist

Install Hadoop 2.X for Oracle Linux 6.X




The Tutorial Shows You Step-by-Step How-to Install and Getting-Started with Apache Hadoop/Map-Reduce vanilla in Pseudo-Distributed mode on Oracle Linux 6.x 32/64bit KDE/Gnome Desktop.

Hadoop is a distributed master-slave that consists of the Hadoop Distributed File System (HDFS) for storage and Map-Reduce for computational capabilities.

The Guide Describe a System-Wide Installation with Root Privileges but You Can Easily Convert the Procedure to a Local One.

The Content and Details of How-to Install Hadoop on Oracle Linux 6.X are Expressly Essentials to Give Focus Only to the Essentials Instructions and Commands.

Install Hadoop for Oracle Linux 6.X - Featured
  1. Download Latest Apache Hadoop Stable Release:

    Apache Hadoop Binary tar.gz

  2. Double-Click on Archive and Extract Into /tmp Directory

    Linux Oracle Linux Apache Hadoop Stable Quick-Start - Unity Extract tar.gz Archive

    Or from CLI:

    tar xvzf *hadoop*tar.gz -C /tmp
  3. Open a Shell Terminal emulator window
    (Press “Enter” to Execute Commands)

     - Open Terminal

    Or Login into Server.

  4. Relocate Apache Hadoop Directory
    Get SuperUser Privileges:

    sudo su

    If Got “User is Not in Sudoers file” then Look: Solution
    Then Switch the contents with:

    mv /tmp/hadoop* /usr/local/

    Make an hadoop symlink directory:

    ln -s /usr/local/hadoop* /usr/local/hadoop
  5. Make Hadoop Temporary Directory:

    mkdir /usr/local/hadoop/tmp

    Set the root as Owner:

    chown -R root:root /usr/local/hadoop*
  6. How-to Install Required Java JDK 7+ on Oracle Linux:

    Install Oracle JDK 7+ for Oracle Linux
  7. Set JAVA_HOME in Hadoop Env File
    Make the Conf directory:

    mkdir /usr/local/hadoop/conf

    Make an Env file:

    nano /usr/local/hadoop/conf/hadoop-env.sh

    Append:

    export JAVA_HOME=/usr/lib/jvm/[oracleJdkVersion]

    Change [oracleJdkVersion] with the current Version:
    Ctrl+x to Save & Exit from nano Editor :)

  8. Eclipse Hadoop 2.X Integration with Free Plugin:

    Hadoop 2.X Eclipse Plugin SetUp
  9. Hadoop Configuration for Pseudo-Distributed mode
    nano /usr/local/hadoop/conf/core-site.xml

    Append:

     <?xml version="1.0"?>
     <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
     <configuration>
     <property>
     <name>hadoop.tmp.dir</name>
     <value>/usr/local/hadoop/tmp</value>
     </property>
     <property>
     <name>fs.default.name</name>
     <value>hdfs://localhost:8020</value>
     </property>
     </configuration>
    

    Next:

    nano /usr/local/hadoop/conf/hdfs-site.xml

    Append:

     <?xml version="1.0"?>
     <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
     <configuration>
     <property>
     <name>dfs.replication</name>
     <value>1</value>
     </property>
     <property>
     <!-- specify this so that running 'hadoop namenode -format'
     formats the right dir -->
     <name>dfs.name.dir</name>
     <value>/usr/local/hadoop/cache/hadoop/dfs/name</value>
     </property>
     </configuration>
    

    Last:

    nano /usr/local/hadoop/conf/mapred-site.xml

    Append:

     <?xml version="1.0"?>
     <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
     <configuration>
     <property>
     <name>mapred.job.tracker</name>
     <value>localhost:8021</value>
     </property>
     </configuration>
    
  10. SetUp Local Path & Environment
    Exit from SuperUser to the normal User:

    exit

    Change to the Home directory:

    cd  

    Edit the bash Config file:

    nano .bashrc

    Inserts:

     HADOOP_HOME=/usr/local/hadoop
    export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
    export JAVA_HOME=/usr/lib/jvm/<oracleJdkVersion>

    Then Load the New Setup:

    source $HOME/.bashrc
  11. SetUp Needed Local SSH Connection
    sudo su -c "openssh-server"

    Generate SSH Keys to Access:

    ssh-keygen -b 2048 -t rsa
    cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys

    Testing Connection:

    ssh 127.0.0.1
  12. Formatting HDFS
    hadoop namenode -format

    Install Hadoop for Oracle Linux 6.x - Terminal Apache Hadoop HDFS Formatting Succcess

  13. Starting Up Hadoop Database
    start-all.sh
  14. Apache Hadoop Database Quick-Start Guide:

    Hadoop MapReduce Quick-Start

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