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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

Changing logging settings


Standard logging settings work very well for general usage.

Changing the log level can be useful to check for bugs or understanding malfunctions due to bad configuration or strange plugin behaviors. A verbose log can be used from Elasticsearch community to cover problems.

If you need to debug your Elasticsearch server or change how the logging works (that is, remoting send events), you need to change the log4j2.properties parameters.

Getting ready

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

How to do it...

In the config directory in your Elasticsearch install directory, there is a log4j2.properties file, which controls the working settings.

The steps required for changing the logging settings are:

  1. To emit every kind of logging Elasticsearch has, you can change the current root level logging which is:

            rootLogger.level = info 
    
  2. This needs...

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