platform: Ubuntu 14.04 LTS

? ? ? ? ? ? ? ?hadoop 1.2.1

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1. install ssh:

$sudo apt-get install openssh-server

$sudo apt-get install openssh-client

2. ssh no password access:

$ssh wubin (your computer)

$ssh-keygen

$ssh localhost

$cat ~/.ssh/id_rsa.put >> ~/.ssh/authorized_keys

(send to other computer $ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@node13)

3. install jdk

$?sudo?add-apt-repository?ppa:webupd8team/java

$?sudo?apt-get?update

$?sudo?apt-get?install?oracle-java8-installer

$?java?-version

4. install hadoop:

download hadoop-1.2.1-bin.tar.gz;

$tar -zxvf hadoop-1.2.1-bin.tar.gz

$sudo cp -r hadoop-1.2.1 /usr/local/hadoop

$sudo chown wubin /usr/local/hadoop

$dir /usr/local/hadoop

$sudo vim $HOME/.bashrc

　　go to the bottom:

　　export HADOOP_PREFIX=/usr/local/hadoop
　　export PATH=$PATH:$HADOOP_PREFIX/bin

$exec bash

$$PATH

　　: no such file or directory

$sudo vim /usr/local/hadoop/conf/hadoop-env.sh

　　export JAVA_HOME=/usr/lib/jvm/java-8-oracle

　　export HADOOP_OPTS=-Djava.net.preferIPv4Stack=true

$sudo vim /usr/local/hadoop/conf/core-site.xml

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$sudo vim /usr/local/hadoop/conf/mapred-site.xml

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$sudo mkdir /usr/local/hadoop/tmp

$sudo chown chown wubin /usr/hadoop/tmp

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5. start hadoop

$hadoop namenode -format

$start-all.ssh

$jps

　　9792 DataNode
　　9971 SecondaryNameNode
　　9641 NameNode
　　10331 Jps
　　10237 TaskTracker
　　10079 JobTracker

$dir /usr/local/hadoop/bin

User Interface:

　　localhost:50070

　　localhost:50030

　　localhost:50070(support other computer to view the webpage via this port).

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Reference:

[1] Hadoop tutorial:?05 Installing Apache Hadoop Single Node,?https://www.youtube.com/channel/UCjZvxgi8ro5VDv7tCqEWwgw.

Installing Apache Hadoop Single Node