Book Image

Hadoop 2.x Administration Cookbook

By : Aman Singh
Book Image

Hadoop 2.x Administration Cookbook

By: Aman Singh

Overview of this book

Hadoop enables the distributed storage and processing of large datasets across clusters of computers. Learning how to administer Hadoop is crucial to exploit its unique features. With this book, you will be able to overcome common problems encountered in Hadoop administration. The book begins with laying the foundation by showing you the steps needed to set up a Hadoop cluster and its various nodes. You will get a better understanding of how to maintain Hadoop cluster, especially on the HDFS layer and using YARN and MapReduce. Further on, you will explore durability and high availability of a Hadoop cluster. You’ll get a better understanding of the schedulers in Hadoop and how to configure and use them for your tasks. You will also get hands-on experience with the backup and recovery options and the performance tuning aspects of Hadoop. Finally, you will get a better understanding of troubleshooting, diagnostics, and best practices in Hadoop administration. By the end of this book, you will have a proper understanding of working with Hadoop clusters and will also be able to secure, encrypt it, and configure auditing for your Hadoop clusters.
Table of Contents (20 chapters)
Hadoop 2.x Administration Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Index

Securing ZooKeeper


Another important component to secure is ZooKeeper, as it is a very important component in the Hadoop cluster. The nodes contributing towards quorum should communicate over a secure channel and should be safeguarded against any clear text exchanges.

In this recipe, we will configure ZooKeeper to run in secure mode by enabling SSL. The ZooKeeper to be used for this secure connection must support Netty and we will enable Netty in the existing ZooKeeper setup previously in Chapter 11, Troubleshooting, Diagnostics, and Best Practices.

Getting ready

Make sure that the user has completed the ZooKeeper configuration recipe in Chapter 4, High Availability. We will be using the existing ZooKeeper cluster and adding the configuration for securing it. Also, the user must have completed the Configuring SSL in Hadoop recipe, as we will be using the existing keystore file and truststore for this recipe.

How to do it...

  1. Connect to the nn1.cluster1.com Namenode and switch to user hadoop.

  2. We...