Book Image

Hadoop Operations and Cluster Management Cookbook

By : Shumin Guo
Book Image

Hadoop Operations and Cluster Management Cookbook

By: Shumin Guo

Overview of this book

<p>We are facing an avalanche of data. The unstructured data we gather can contain many insights that could hold the key to business success or failure. Harnessing the ability to analyze and process this data with Hadoop is one of the most highly sought after skills in today's job market. Hadoop, by combining the computing and storage powers of a large number of commodity machines, solves this problem in an elegant way!</p> <p>Hadoop Operations and Cluster Management Cookbook is a practical and hands-on guide for designing and managing a Hadoop cluster. It will help you understand how Hadoop works and guide you through cluster management tasks.</p> <p>This book explains real-world, big data problems and the features of Hadoop that enables it to handle such problems. It breaks down the mystery of a Hadoop cluster and will guide you through a number of clear, practical recipes that will help you to manage a Hadoop cluster.</p> <p>We will start by installing and configuring a Hadoop cluster, while explaining hardware selection and networking considerations. We will also cover the topic of securing a Hadoop cluster with Kerberos, configuring cluster high availability and monitoring a cluster. And if you want to know how to build a Hadoop cluster on the Amazon EC2 cloud, then this is a book for you.</p>
Table of Contents (15 chapters)
Hadoop Operations and Cluster Management Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Configuring Hadoop in fully-distributed mode


To configure a Hadoop cluster in fully-distributed mode , we need to configure all the master and slave machines. Although different from the pseudo-distributed mode, the configuration experience will be similar. In this recipe, we will outline steps to configure Hadoop in fully-distributed mode.

Getting ready

In this book, we propose to configure a Hadoop cluster with one master node and five slave nodes. The hostname of the master node is 1 and the hostnames of the slave nodes are slave1, slave2, slave3, slave4, and slave5.

Before getting started, we assume that Linux has been installed on all the cluster nodes and we should validate password-less login with the following commands on the master node:

ssh hduser@slave1
ssh hduser@slave2
...

Tip

Unlike the pseudo-distributed mode, configuring a Hadoop cluster in fully-distributed mode requires the successful configuration of all the nodes in the cluster. Otherwise, the cluster will not work as expected...