Book Image

Hands-On Infrastructure Monitoring with Prometheus

By : Joel Bastos, Pedro Araújo
Book Image

Hands-On Infrastructure Monitoring with Prometheus

By: Joel Bastos, Pedro Araújo

Overview of this book

Prometheus is an open source monitoring system. It provides a modern time series database, a robust query language, several metric visualization possibilities, and a reliable alerting solution for traditional and cloud-native infrastructure. This book covers the fundamental concepts of monitoring and explores Prometheus architecture, its data model, and how metric aggregation works. Multiple test environments are included to help explore different configuration scenarios, such as the use of various exporters and integrations. You’ll delve into PromQL, supported by several examples, and then apply that knowledge to alerting and recording rules, as well as how to test them. After that, alert routing with Alertmanager and creating visualizations with Grafana is thoroughly covered. In addition, this book covers several service discovery mechanisms and even provides an example of how to create your own. Finally, you’ll learn about Prometheus federation, cross-sharding aggregation, and also long-term storage with the help of Thanos. By the end of this book, you’ll be able to implement and scale Prometheus as a full monitoring system on-premises, in cloud environments, in standalone instances, or using container orchestration with Kubernetes.
Table of Contents (21 chapters)
Free Chapter
1
Section 1: Introduction
5
Section 2: Getting Started with Prometheus
11
Section 3: Dashboards and Alerts
15
Section 4: Scalability, Resilience, and Maintainability

Chapter 3, Setting Up a Test Environment

  1. While the Prometheus stack can be deployed in almost every mainstream operating system, and thus, it will most certainly run in your desktop environment, it is more reproducible to use a Vagrant-based test environment for simulating machine deployments, and minikube to do the same for Kubernetes-based production environments.
  2. The defaults.sh file located in the utils directory allows the software versions to be changed for the virtual machine-based examples.
  3. The default subnet is 192.168.42.0/24 in all virtual machine-based examples.
  4. The steps to get a Prometheus instance up and running are as follows:
    1. Ensure that software versions match the ones recommended.
    2. Clone the code repository provided.
    3. Move into the chapter directory.
    4. Run vagrant up.
    5. When finished, run vagrant destroy -f.
  1. That information is available in the Prometheus web...