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

The Elasticsearch cat API

Think of the Elasticsearch cat API as a simpler version of the Elasticsearch Cluster and Indices APIs mentioned earlier. The cat API returns results in an easy-to-read, tab-separated format, unlike the JSON returned by the Cluster and Indices APIs.

A complete list of API methods is available at, but there are some highlights, which we cover in the following sections.


Elasticsearch-head and Bigdesk are, for the most part, powered by the Elasticsearch APIs:

These two APIs provide a plethora of information about the inner workings of Elasticsearch. However, they also return large JSON documents that are complicated to interpret quickly. For example, here's a snippet from calling the Indices Stats API:

curl -XGET "http://elasticsearch-node...