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 audit logging in a secured Hadoop cluster

To enable security event monitoring and auditing in Hadoop, we need to enable the logging framework to write the detailed audit trails in the logfile. Enabling detailed audit logs needs careful planning. These logs could grow very fast if there are continuous exceptions and could fill up the disk space. There should be a system monitoring this log growth and taking corrective actions such as cleaning and compressing. This can be done by configuring the file in the Hadoop configuration directory. By default, the Hadoop security and audit logfile appenders are set to Null appenders and hence, disabled. This needs to be modified to reflect the correct logfile location for audit and security logs. We also need to enable the capture of the authentication logs from the local KDC.

Configuring Hadoop audit logs

The following configuration shows the audit and security logging configurations that need to be done on all the nodes...