Hadoop pseudo-Distributed installation method

I have been in touch with Hadoop for almost two years, and have not summed up the installation tutorial myself, and have recently used Hadoop to build a cluster to carry out the experiment, so I use this opportunity to write a tutorial for later use, and to discuss with you.

To install Hadoop first install its secondary environment Java

Installation and configuration of Java under Ubuntu

The Java installation is available after the specified path is easy to find.

Java installation

1 in the/home/xx (that is, the current user) directory, new java1.xx folder: mkdir/home/xx/java1.xx (file name on the version number, to facilitate future understanding of the Java version)

2 Enter/home/xx/java1.xx directory, run installation instructions: Sudo/home/xx/jdk-6u26-linux-i586.bin, then generate folder Jdk1.6.0_26, if the feeling name is too long, you can rename it: MV Jdk1.6.0_26 JDK

You can also use the Sudoapt-get install package to install Java. If you want to uninstall Java use command sudo rm-rf/home/xx/java1.6/jdk1.6 (installation directory)

Configure Environment variables

Enter profile file Add environment configuration, command for sudo gedit/etc/profile at end of file add