Book Image

ElasticSearch Server

Book Image

ElasticSearch Server

Overview of this book

ElasticSearch is an open source search server built on Apache Lucene. It was built to provide a scalable search solution with built-in support for near real-time search and multi-tenancy.Jumping into the world of ElasticSearch by setting up your own custom cluster, this book will show you how to create a fast, scalable, and flexible search solution. By learning the ins-and-outs of data indexing and analysis, "ElasticSearch Server" will start you on your journey to mastering the powerful capabilities of ElasticSearch. With practical chapters covering how to search data, extend your search, and go deep into cluster administration and search analysis, this book is perfect for those new and experienced with search servers.In "ElasticSearch Server" you will learn how to revolutionize your website or application with faster, more accurate, and flexible search functionality. Starting with chapters on setting up your own ElasticSearch cluster and searching and extending your search parameters you will quickly be able to create a fast, scalable, and completely custom search solution.Building on your knowledge further you will learn about ElasticSearch's query API and become confident using powerful filtering and faceting capabilities. You will develop practical knowledge on how to make use of ElasticSearch's near real-time capabilities and support for multi-tenancy.Your journey then concludes with chapters that help you monitor and tune your ElasticSearch cluster as well as advanced topics such as shard allocation, gateway configuration, and the discovery module.
Table of Contents (17 chapters)
ElasticSearch Server
Credits
About the Authors
Acknowledgement
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Monitoring your cluster state and health


During the normal life of an application, a very important concern is monitoring. This allows the administrators of the system to detect possible problems and prevent them before they occur or at least know what happens during a failure.

ElasticSearch provides very detailed information that allows us to check and monitor the node or cluster as a whole. This includes statistics, information about the server, and node parameters, but first of all it includes complete information about the current cluster state. Let's look at this in more detail. But before that let's take a look at one piece of information: these APIs are very complex and in this book we've only described the basics. Please note that the amount of information regarding the cluster state and health monitoring is enormous; because of this we keep the information and details about ElasticSearch internal to the minimum that is needed to understand the described topic.

The cluster health API...