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ElasticSearch Cookbook

ElasticSearch Cookbook

By : Alberto Paro
2.5 (4)
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ElasticSearch Cookbook

ElasticSearch Cookbook

2.5 (4)
By: Alberto Paro

Overview of this book

ElasticSearch is one of the most promising NoSQL technologies available and is built to provide a scalable search solution with built-in support for near real-time search and multi-tenancy. This practical guide is a complete reference for using ElasticSearch and covers 360 degrees of the ElasticSearch ecosystem. We will get started by showing you how to choose the correct transport layer, communicate with the server, and create custom internal actions for boosting tailored needs. Starting with the basics of the ElasticSearch architecture and how to efficiently index, search, and execute analytics on it, you will learn how to extend ElasticSearch by scripting and monitoring its behaviour. Step-by-step, this book will help you to improve your ability to manage data in indexing with more tailored mappings, along with searching and executing analytics with facets. The topics explored in the book also cover how to integrate ElasticSearch with Python and Java applications. This comprehensive guide will allow you to master storing, searching, and analyzing data 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 ElasticSearch for Linux systems (advanced)

If you are using a Linux system, typically on a server, you need to manage extra setup to have a performance gain or to resolve production problems with many indices.

Getting ready

You need a working ElasticSearch installation.

How to do it...

For improving the performance on Linux systems, we will perform the steps given as follows:

  1. First you need to change the current limit for the user who runs the ElasticSearch server. In these examples, we call the user as elasticsearch.
  2. To allow elasticsearch to manage a large number of files, you need to increment the number of file descriptors (number of files) that a user can have. To do so, you must edit your /etc/security/limits.conf and add the following lines at the end:
    elasticsearch       -       nofile          999999
    elasticsearch       -       memlock         unlimited

    Then a machine restart is required to be sure that changes are taken.

  3. For controlling the memory swapping, you need to set up...
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ElasticSearch Cookbook
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