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  • Book Overview & Buying Elasticsearch 5.x Cookbook
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Elasticsearch 5.x Cookbook

Elasticsearch 5.x Cookbook - Third Edition

By : Alberto Paro
2.5 (4)
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Elasticsearch 5.x Cookbook

Elasticsearch 5.x Cookbook

2.5 (4)
By: Alberto Paro

Overview of this book

Elasticsearch is a Lucene-based distributed search server that allows users to index and search unstructured content with petabytes of data. This book is your one-stop guide to master the complete Elasticsearch ecosystem. We’ll guide you through comprehensive recipes on what’s new in Elasticsearch 5.x, showing you how to create complex queries and analytics, and perform index mapping, aggregation, and scripting. Further on, you will explore the modules of Cluster and Node monitoring and see ways to back up and restore a snapshot of an index. You will understand how to install Kibana to monitor a cluster and also to extend Kibana for plugins. Finally, you will also see how you can integrate your Java, Scala, Python, and Big Data applications such as Apache Spark and Pig with Elasticsearch, and add enhanced functionalities with custom plugins. By the end of this book, you will have an in-depth knowledge of the implementation of the Elasticsearch architecture and will be able to manage data efficiently and effectively with Elasticsearch.
Table of Contents (25 chapters)
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Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface

Setting up for Linux systems


If you are using a Linux system, you need to manage extra setup to improve performance or to resolve production problems with many indices.

This recipe covers two common errors that happened in production:

  • Too many open files that can corrupt your indices and your data

  • Slow performance in search and indexing due to garbage collector

Note

The other possible big troubles arise when you go out of disk space. In this scenario, some files can get corrupted. To prevent your indices from corruption and possible data loss, it is best practice to monitor the storage spaces.

Getting ready

You need a working Elasticsearch installation as we described in the Downloading and installing Elasticsearch recipe in this chapter and a simple text editor to change configuration files.

How to do it...

For improving the performances on Linux systems, we will perform the following steps:

  1. First you need to change the current limit for the user that runs the Elasticsearch server. In these examples...

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