You're reading from Building IoT Visualizations using Grafana Power up your IoT projects and monitor with Prometheus, LibreNMS, and Elasticsearch

Product type Paperback

Published in Jul 2022

Publisher Packt

ISBN-13 9781803236124

Length 360 pages

Edition 1st Edition

Tools

Elasticsearch

Concepts

IoT Development

Author (1):

Rodrigo Juan Hernandez

View More author details

Table of Contents (21) Chapters

Preface

1. Part 1: Meeting Grafana

2. Chapter 1: Getting Started with Grafana FREE CHAPTER

3. Chapter 2: Exploring Grafana

4. Part 2: Collecting Data from IoT Devices

5. Chapter 3: Connecting IoT Devices

6. Chapter 4: Data Sources for Grafana

7. Chapter 5: Using Time Series Databases

8. Part 3: Connecting Data Sources and Building Dashboards

9. Chapter 6: Getting Data and Building Dashboards

10. Chapter 7: Managing Plugins

11. Chapter 8: Organizing and Managing Dashboards

12. Part 4: Performing Analytics and Notifications

13. Chapter 9: Performing Analytics in Grafana

14. Chapter 10: Alerting and Notifications in Grafana

15. Part 5: Integrating Grafana with Other Platforms

16. Chapter 11: Using Grafana with Prometheus

17. Chapter 12: Using Grafana with OpenSearch

18. Chapter 13: Showing Data from LibreNMS in Grafana

19. Chapter 14: Integrations for Grafana Cloud

20. Other Books You May Enjoy

How to use live data

Using live data is a must in any IoT project. Fortunately, Grafana allows using live data since version 8.0. It uses WebSocket connections to exchange data in a quasi-real-time way.

This feature is enabled by default, with a maximum number of simultaneous connections of 100. WebSocket is a resource-intense protocol so it has to be used carefully. If you want to extend this feature to more clients, take into account the availability of resources (CPU and memory).

As we have seen in Chapter 3, Connecting IoT Devices, WebSocket initiates with an HTTP request, followed by an upgrade request. Then, the HTTP session remains open and data is exchanged between client and server using the WebSocket connection.

Features

Currently, Grafana supports the following features:

It processes data as soon as it arrives. Instead of polling data from data sources at a specified polling period, it can manage asynchronous data in real-time.
Whenever a dashboard...