ElasticSearch Cookbook, Second Edition by Alberto Paro

By Alberto Paro

Over a hundred thirty complex recipes to go looking, research, installation, deal with, and computer screen info successfully with ElasticSearch

About This Book

  • Deploy and deal with easy ElasticSearch nodes in addition to advanced cluster topologies
  • Write local plugins to increase the functionalities of ElasticSearch to spice up your business
  • Packed with transparent, step by step recipes to stroll you thru the services of ElasticSearch

Who This e-book Is For

If you're a developer who implements ElasticSearch on your net functions and need to sharpen your knowing of the center components and purposes, this is often the ebook for you. it truly is assumed that you have got operating wisdom of JSON and, in order to expand ElasticSearch, of Java and similar technologies.

In Detail

This publication will advisor you thru the full ElasticSearch environment. From selecting the proper delivery layer and speaking with the server to making and customizing inner activities, you are going to enhance an in-depth wisdom of the implementation of the ElasticSearch architecture.

After growing advanced queries and analytics, mapping, aggregation, and scripting, you'll grasp the combination of ElasticSearch's performance in user-facing purposes and take your wisdom one-step additional by way of development customized plugins, constructing adapted mapping, executing robust analytics, and integrating with Python and Java applications.

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Extra info for ElasticSearch Cookbook, Second Edition

Example text

40 Chapter 2 If there are undeletable files in your plugin directory (or a strange astronomical event that affects your server), the plugin script might fail; therefore, to manually remove a plugin, you need to follow these steps: 1. Go to the plugins directory. 2. Remove the directory with your plugin name. Changing logging settings Standard logging settings work very well for general usage. Changing the log level can be useful when checking for bugs, or to understand malfunctions due to a bad configuration or strange plugin behavior.

Stop your running node in order to prevent exceptions due to file removal. 2. bat –remove head 3. Restart the server. How it works... The Plugin Manager's –remove command tries to detect the correct name of the plugin and remove the directory of the installed plugin. 40 Chapter 2 If there are undeletable files in your plugin directory (or a strange astronomical event that affects your server), the plugin script might fail; therefore, to manually remove a plugin, you need to follow these steps: 1.

44 Chapter 3 How to do it... To create an explicit mapping, perform the following steps: 1. pretty=true 2. This is how the resulting mapping, autocreated by ElasticSearch, should look: { "mytype" : { "properties" : { "age" : { "type" : "long" }, "name" : { "type" : "string" } } } } How it works... The first command line creates an index named test, where you can configure the type/mapping and insert documents. The second command line inserts a document into the index. ) 45 Managing Mapping During the document's indexing phase, ElasticSearch checks whether the mytype type exists; if not, it creates the type dynamically.

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