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

Setting up Kerberos

The first step in the process to establish a secure Hadoop cluster is to set up the Kerberos authentication and ensure that the Kerberos authentication for the Hadoop service principals are working for all the nodes on the cluster. To set up Kerberos, we establish a Kerberos Server (KDC) on a separate node and install the Kerberos client on all nodes of the Hadoop cluster as shown in the following figure:

The following figure illustrates the high-level steps involved in installing and configuring Kerberos. It also shows the various Kerberos utilities that are available.

We will use the following realm and domain for the rest of this chapter:

Domain name:

Realm name: MYREALM.COM

Installing the Key Distribution Center

To set up Kerberos, we need to install the Key Distribution Center (KDC) on a secured server.

On RHEL/CentOS/Fedora, to install Kerberos, run the following command with root privileges:

yum install krb5-server krb5-libs krb5-workstation

Detailed instructions...