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

Monitoring a Hadoop cluster with Ambari


The Apache Ambari project (http://incubator.apache.org/ambari/) is an open source project aiming to ease the management and monitoring of Hadoop clusters. Currently, Ambari supports the management of the software: HDFS, MapReduce, HBase, and Hive. In this recipe, we will outline steps to configure Hadoop Ambari for cluster installation, monitoring, and management.

Getting ready

We assume that the Hadoop cluster has been configured properly. Perform the following steps:

  1. Enable the NTP server with the following command:

    sudo service ntpd start
    sudo chkconfig ntpd on
    
  2. SELinux should have been disabled on the servers where Ambari is installed. We can use the following command to temporarily disable SELinux:

    sudo setenforce 0
    
  3. To permanently disable SELinux, we need to edit the SELinux configuration file /etc/selinux/config by changing the state of the SELINUX attribute to the following:

    SELINUX=disabled0
    

    Tip

    After changing the /etc/selinux/config file, we need...