Book Image

Mastering Elastic Stack

By : Ravi Kumar Gupta, Yuvraj Gupta
Book Image

Mastering Elastic Stack

By: Ravi Kumar Gupta, Yuvraj Gupta

Overview of this book

Even structured data is useless if it can’t help you to take strategic decisions and improve existing system. If you love to play with data, or your job requires you to process custom log formats, design a scalable analysis system, and manage logs to do real-time data analysis, this book is your one-stop solution. By combining the massively popular Elasticsearch, Logstash, Beats, and Kibana, elastic.co has advanced the end-to-end stack that delivers actionable insights in real time from almost any type of structured or unstructured data source. If your job requires you to process custom log formats, design a scalable analysis system, explore a variety of data, and manage logs, this book is your one-stop solution. You will learn how to create real-time dashboards and how to manage the life cycle of logs in detail through real-life scenarios. This book brushes up your basic knowledge on implementing the Elastic Stack and then dives deeper into complex and advanced implementations of the Elastic Stack. We’ll help you to solve data analytics challenges using the Elastic Stack and provide practical steps on centralized logging and real-time analytics with the Elastic Stack in production. You will get to grip with advanced techniques for log analysis and visualization. Newly announced features such as Beats and X-Pack are also covered in detail with examples. Toward the end, you will see how to use the Elastic stack for real-world case studies and we’ll show you some best practices and troubleshooting techniques for the Elastic Stack.
Table of Contents (19 chapters)
Mastering Elastic Stack
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Exploring Filter Plugins


A filter plugin is used to perform transformations on the data. If your input fetches data based on what you want to process the data, then a filter plugin will help you to do so before sending the output. It acts as the intermediate section between input and output, which is required in the Logstash configuration file.

Let's have a look at few of the filter plugins.

grok

The grok plugin is the most commonly used filter in Logstash and has powerful capabilities to transform your data from unstructured to structured data. Even if your data is structured, you can streamline the data using this pattern. Due to the powerful nature of the grok pattern, Logstash is referred to as a Swiss Army Knife. Grok is used to parse the data and structure the data in the way you want. It is used to parse any type of log that is in human-readable format. It combines the text patterns into a structure that helps you to match the logs and group them into fields. Logstash ships with more...