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Hadoop 2.x Administration Cookbook by Gurmukh Singh

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Setting up host resolution

Before we start with the installations, it is important to make sure that the host resolution is configured and working properly.

Getting ready

Choose any appropriate hostnames the user wants for his or her Linux machines. For example, the hostnames could be master1.cluster.com or rt1.cyrus.com or host1.example.com. The important thing is that the hostnames must resolve.

This resolution can be done using a DNS server or by configuring the/etc/hosts file on each node we use for our cluster setup.

The following steps will show you how to set up the resolution in the/etc/hosts file.

How to do it...

  1. Connect to the Linux machine and change the hostname to master1.cyrus.com in the file as follows:
  2. Edit the/etc/hosts file as follows: ...

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