Install Hadoop Single node Cluster Using Hadoop 2.x

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Prerequisites:

1.Hadoop 2.7.0 2.Java-8-oracle 3.Ubuntu 12.0 or above

Process of Setting up a Single Node Cluster Using Hadoop 2.x

 

Update the repository

 

Once the update is complete go for java installation

Command : 

sudo add-apt-repository ppa:webupd8team/java

sudo apt-get update

sudo apt-get install oracle-java8-installer

♦ After java has been installed. To check whether java is installed on your system or Not give the below command: Command: java –version  

Install openssh-server

Command: sudo apt-get install openssh-server  

Download Hadoop 2.7.0.tar.gz

Command: wget  https://archive.apache.org/dist/hadoop/core/hadoop-2.7.0/hadoop-2.7.0.tar.gz  

After downloading untar the Hadoop

Command: tar -xvf hadoop-2.7.0.tar.gz  

Get into Hadoop directory

 

Go to Hadoop and configure the fill

 

Edit core-site.xml

 

Edit hdfs-site.xml

 

Edit mapred-site.xml

 

Edit yarn-site.xml

 

Edit Hadoop-env.sh

 

Set JAVA and HADOOP HOME in the .bashrc file

 

Create an ssh key:

Command: ssh-keygen -t rsa  

Moving the key to authorized key

Command:cat $HOME /.ssh /id_rsa.pub>>$HOME/ .ssh/ authorized_keys  

Copy the key to other host

Command: ssh-copy-id -i $HOME/.ssh/id_rsa.pub user@hostname  

Now format the name node

 

Start all daemons

 

Check your daemons

Command: Jps