Book Image

Elasticsearch 8.x Cookbook - Fifth Edition

By : Alberto Paro
Book Image

Elasticsearch 8.x Cookbook - Fifth Edition

By: Alberto Paro

Overview of this book

Elasticsearch is a Lucene-based distributed search engine at the heart of the Elastic Stack that allows you to index and search unstructured content with petabytes of data. With this updated fifth edition, you'll cover comprehensive recipes relating to what's new in Elasticsearch 8.x and see how to create and run complex queries and analytics. The recipes will guide you through performing index mapping, aggregation, working with queries, and scripting using Elasticsearch. You'll focus on numerous solutions and quick techniques for performing both common and uncommon tasks such as deploying Elasticsearch nodes, using the ingest module, working with X-Pack, and creating different visualizations. As you advance, you'll learn how to manage various clusters, restore data, and install Kibana to monitor a cluster and extend it using a variety of plugins. Furthermore, you'll understand how to integrate your Java, Scala, Python, and big data applications such as Apache Spark and Pig with Elasticsearch and create efficient data applications powered by enhanced functionalities and custom plugins. By the end of this Elasticsearch cookbook, you'll have gained in-depth knowledge of implementing the Elasticsearch architecture and be able to manage, search, and store data efficiently and effectively using Elasticsearch.
Table of Contents (20 chapters)

Changing logging settings

Standard logging settings work very well for general usage.

Changing the log level can be useful for checking for bugs or understanding malfunctions due to bad configuration or strange plugin behavior. A verbose log can be used from the Elasticsearch community to solve such problems.

If you need to debug your Elasticsearch server or change the logging, you need to change the log4j2.properties file.

Getting ready

You need a working Elasticsearch installation, as 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 that controls the working settings.

The steps that are required for changing the logging settings are as follows:

  1. To emit every kind of logging that Elasticsearch could produce, you can change the current root level logging...