Book Image

Securing Hadoop

By : Sudheesh Narayan
Book Image

Securing Hadoop

By: Sudheesh Narayan

Overview of this book

Security of Big Data is one of the biggest concerns for enterprises today. How do we protect the sensitive information in a Hadoop ecosystem? How can we integrate Hadoop security with existing enterprise security systems? What are the challenges in securing Hadoop and its ecosystem? These are the questions which need to be answered in order to ensure effective management of Big Data. Hadoop, along with Kerberos, provides security features which enable Big Data management and which keep data secure. This book is a practitioner's guide for securing a Hadoop-based Big Data platform. This book provides you with a step-by-step approach to implementing end-to-end security along with a solid foundation of knowledge of the Hadoop and Kerberos security models. This practical, hands-on guide looks at the security challenges involved in securing sensitive data in a Hadoop-based Big Data platform and also covers the Security Reference Architecture for securing Big Data. It will take you through the internals of the Hadoop and Kerberos security models and will provide detailed implementation steps for securing Hadoop. You will also learn how the internals of the Hadoop security model are implemented, how to integrate Enterprise Security Systems with Hadoop security, and how you can manage and control user access to a Hadoop ecosystem seamlessly. You will also get acquainted with implementing audit logging and security incident monitoring within a Big Data platform.
Table of Contents (15 chapters)
Securing Hadoop
About the Author
About the Reviewers

Configuring Hadoop with Kerberos authentication

Once the Kerberos setup is completed and the user principals are added to KDC, we can configure Hadoop to use Kerberos authentication. It is assumed that a Hadoop cluster in a non-secured mode is configured and available. We will begin the configuration using Cloudera Distribution of Hadoop (CDH4).

The steps involved in configuring Kerberos authentication for Hadoop are shown in the following figure:

Setting up the Kerberos client on all the Hadoop nodes

In each of the Hadoop node (master node and slave node), we need to install the Kerberos client. This is done by installing the client packages and libraries on the Hadoop nodes.

For RHEL/CentOS/Fedora, we will use the following command:

yum install krb5-libs krb5-workstation

For Ubuntu, we will use the following command:

apt-get install krb5-user

Setting up Hadoop service principals

In CDH4, there are three users (hdfs, mapred, and yarn) that are used to run the various Hadoop daemons. All the...