Book Image

Elasticsearch Essentials

By : Bharvi Dixit
Book Image

Elasticsearch Essentials

By: Bharvi Dixit

Overview of this book

With constantly evolving and growing datasets, organizations have the need to find actionable insights for their business. ElasticSearch, which is the world's most advanced search and analytics engine, brings the ability to make massive amounts of data usable in a matter of milliseconds. It not only gives you the power to build blazing fast search solutions over a massive amount of data, but can also serve as a NoSQL data store. This guide will take you on a tour to become a competent developer quickly with a solid knowledge level and understanding of the ElasticSearch core concepts. Starting from the beginning, this book will cover these core concepts, setting up ElasticSearch and various plugins, working with analyzers, and creating mappings. This book provides complete coverage of working with ElasticSearch using Python and performing CRUD operations and aggregation-based analytics, handling document relationships in the NoSQL world, working with geospatial data, and taking data backups. Finally, we’ll show you how to set up and scale ElasticSearch clusters in production environments as well as providing some best practices.
Table of Contents (12 chapters)
11
Index

Creating a cluster

Since you have learned a major part of cluster configuration, let's begin to create a full-blown production-ready cluster. In this example, we will configure a cluster with three master, two client nodes, and two data nodes.

The example shows a configuration of one master, one data, and one client node. On the rest of nodes, all the configuration will remain the same according to the node category, but only four parameters will be changed:

node.name, path.data, path.log and network.host.

Note

If you are configuring a new data or log path, make sure that Elasticsearch has the full permission of that directory. You can set the permission with the following command:

sudo chown -R elasticsearch:elasticsearch path_of_the_data_directory

Configuring master nodes

cluster.name: "production-cluster"
node.name: "es-master-01"
node.data: false
node.master: true
path.data: "path_to_data_directory"
network.host: "192.168.1.10" (should be changed...