Getting ready

You need an installed working ElasticSearch server.

How to do it...

In the config directory in your ElasticSearch, install the directory. There is a logging.yml file which controls the working settings. The steps required for changing the logging settings are:

How it works...

ElasticSearch logging system is based on the log4j library (http://logging.apache.org/log4j/).

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 the problems.

This is a powerful library to manage logging, covering all the functionalities of it (it's outside the scope of this book). If a user needs advanced usage, there are a lot of books and articles on the Internet for reference.