Get up to speed with Prometheus, the metrics-based monitoring system used in production by tens of thousands of organizations. This updated second edition provides site reliability engineers, Kubernetes administrators, and software developers with a hands-on introduction to the most important aspects of Prometheus, including dashboarding and alerting, direct code instrumentation, and metric collection from third-party systems with exporters.

Prometheus server maintainer Julien Pivotto and core developer Brian Brazil demonstrate how you can use Prometheus for application and infrastructure monitoring. This book guides you through Prometheus setup, the Node Exporter, and the Alertmanager, and then shows you how to use these tools for application and infrastructure monitoring. You'll understand why this open source system has continued to gain popularity in recent years.

You will:

• Know where and how much instrumentation to apply to your application code
• Monitor your infrastructure with Node Exporter and use new collectors for network system pressure metrics
• Get an introduction to Grafana, a popular tool for building dashboards
• Use service discovery and the new HTTP SD monitoring system to provide different views of your machines and services
• Use Prometheus with Kubernetes and examine exporters you can use with containers
• Discover Prom's new improvements and features, including trigonometry functions
• Learn how Prometheus supports important security features including TLS and basic authentication

Table of Contents

Part I. Introduction

1. What Is Prometheus?.

2. Getting Started with Prometheus

Part II. Application Monitoring

3. Instrumentation

4. Exposition

5. Labels

6. Dashboarding with Grafana

Part III. Infrastructure Monitoring

7. Node Exporter

8. Service Discovery

9. Containers and Kubernetes

10. Common Exporters

11. Working with Other Monitoring Systems

12. Writing Exporters

Part IV. PromQL

13. Introduction to PromQL

14. Aggregation Operators

15. Binary Operators

16. Functions

17. Recording Rules

Part V. Alerting

18. Alerting

19. Alertmanager

Part VI. Deployment

20. Server-Side Security

21. Putting It All Together

About the Authors

Julien Pivotto is a prominent figure in the world of open-source monitoring and alerting. As a maintainer of Prometheus, he has made significant contributions to the development and advancement of this powerful tool. Additionally, he is the co-founder of O11y, a company that specializes in providing premium support for various open-source observability tools such as Prometheus, Thanos, and Grafana.



Brian Brazil is the founder of Robust Perception and a Prometheus core developer. He is well known in the community, has given countless presentations at conferences, and his blog is widely read within the community.