How to Install Hadoop Single Node Cluster on Ubuntu.
Step 1: Update the “System Software Repositories” using sudo apt-get update
The first step update the packages of Ubuntu
Step 2: JAVA 1.8 JRE INSTALLATION using the below command.
JAVA is prerequisite for Installation so first install JRE then will go with JDK
Step 3: JAVA 1.8 JDK INSTALL using below command
Step 4: How to check JAVA version on Linux using below command
Step 5: After that We must and should Install SSH(Secure Shell) using below command:
SSH for secure less communication in name node and secondary name node for frequently communication
Step 6: Check SSH Installation using below command
After installation of SSH will check using ssh localhost command whether the communication is working or not.
Step 7: Download Hadoop-2.6.0 tarball from Apache Mirrors.
After completion of Hadoop prerequisites then download the Hadoop tarball
Step 8: Extract the tar ball using below command
Step 9: Update Environment variables and Path for HADOOP_HOME and JAVA_HOME:
Step 10: To check the Path variable is there or not after that edit the Configuration files as part of Hadoop Installation.
Step 11: First open “Core-site.xml” file, add the properties
Core-site file for Name node information
Step 12: Open “hdfs-site.xml” file and add the properties
Hdfs site xml file related to replication factor and data node information.
Step 13: Open “yarn-site.xml” file and add the properties to configure ‘Resource Manager’ & ‘Node Manage’ details:
Step 14: Update JAVA_HOME path in ‘ hadoop-env.sh’ file
Step 15:Update JAVA_HOME path in ‘ mapred-env.sh‘ file
Step 16: Open ‘mapred-site.xml‘ and update the yarn into that file
Step 17: Open slaves file and check whether the hostname is localhost or not
Step 18: Before starting the Name Node, we must and should format the name node using below command:
hadoop namenode -format
Step 19: To start all the daemons of Hadoop using below command:
start-all.sh
Step 20: How to check daemons whether work or not using jps command
Step 21: After that all to access the Name Node information in GUI:
http://localhost:50070
