Install Hadoop eco-system singlemode

install openjdk debian

sudo apt-get install openjdk-7-jdk ssh rsync
cd /tmp
wget http://apache.mivzakim.net/hadoop/common/stable/hadoop-2.5.0.tar.gz
tar xzf hadoop-2.5.0.tar.gz
sudo mv hadoop-2.5.0 /usr/local/
sudo ln -s /usr/local/hadoop-* /usr/local/hadoop
sudo chown -R hduser:hadoop /usr/local/hadoop*
 
sudo addgroup hadoop
sudo adduser --ingroup hadoop hduser
 
su - hduser
ssh-keygen -t rsa -P ""
cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys