Book Image

Monitoring Elasticsearch

By : Dan Noble, Pulkit Agrawal, Mahmoud Lababidi
Book Image

Monitoring Elasticsearch

By: Dan Noble, Pulkit Agrawal, Mahmoud Lababidi

Overview of this book

ElasticSearch is a distributed search server similar to Apache Solr with a focus on large datasets, a schema-less setup, and high availability. This schema-free architecture allows ElasticSearch to index and search unstructured content, making it perfectly suited for both small projects and large big data warehouses with petabytes of unstructured data. This book is your toolkit to teach you how to keep your cluster in good health, and show you how to diagnose and treat unexpected issues along the way. You will start by getting introduced to ElasticSearch, and look at some common performance issues that pop up when using the system. You will then see how to install and configure ElasticSearch and the ElasticSearch monitoring plugins. Then, you will proceed to install and use the Marvel dashboard to monitor ElasticSearch. You will find out how to troubleshoot some of the common performance and reliability issues that come up when using ElasticSearch. Finally, you will analyze your cluster’s historical performance, and get to know how to get to the bottom of and recover from system failures. This book will guide you through several monitoring tools, and utilizes real-world cases and dilemmas faced when using ElasticSearch, showing you how to solve them simply, quickly, and cleanly.
Table of Contents (15 chapters)
Monitoring Elasticsearch
About the Author
About the Reviewers

Chapter 2. Installation and the Requirements for Elasticsearch

The Java Runtime Environment (JRE) is the only requirement to run Elasticsearch.

The official Elasticsearch documentation recommends that you use either Oracle Java 8 (update 20 or later), or Oracle Java 7 (update 55 or later). Once you choose your version of the JRE, we recommend that all your nodes use the same version to maintain compatibility. Using different versions of Java across your cluster or using Java versions earlier than the ones specified here, can lead to data corruption. Once you choose a version of Elasticsearch, all the nodes in your cluster should use the same version.

While it is possible to run Elasticsearch on both Windows and Linux, this book focuses on using it exclusively in a Linux environment. The Elasticsearch documentation is centered on Linux and most of the Elasticsearch community runs the software on Linux. However, there is no reason a production cluster of Elasticsearch cannot run on Windows.