Hadoop 2 on Ubuntu on Azure.

This is to be read in conjunction with http://ac31004.blogspot.co.uk/2013/10/installing-hadoop-2-on-mac_29.html

Fire up a Azure Ubuntu server and ssh to it

Install a Java JDK:
apt-get install default-jdk

On you home machine, download a copy of Hadoop and secure copy it to the Azure machine (your username and machine will be different)
scp hadoop-2.2.0.tar.gz user@Hadoopmachine.cloudapp.net:

Unzip it and untar it
gunzip hadoop-2.2.0.tar.gz
tar xvf  hadoop-2.2.0.tar

You'll still need to set up the env variables
export JAVA_HOME=/usr/lib/jvm/default-java
export HADOOP_INSTALL=/home/user/hadoop-2.2.0
export PATH=$PATH:$HADOOP_INSTALL/bin:$HADOOP_INSTALL/sbin


Also add JAVA_HOME, add Hadoop_INSTALL and change path in /etc/environment, see http://trentrichardson.com/2010/02/10/how-to-set-java_home-in-ubuntu/ for details

After setting up core-site.xml and hdfs-site.xml  you'll make the datanode and name nodename directories

mkdir -p /home/hadoop/yarn/namenode
mkdir /home/hadoop/yarn/datanode

Everything else should be the same.