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Hands-On Infrastructure Monitoring with Prometheus

You're reading from  Hands-On Infrastructure Monitoring with Prometheus

Product type Book
Published in May 2019
Publisher Packt
ISBN-13 9781789612349
Pages 442 pages
Edition 1st Edition
Languages
Authors (2):
Joel Bastos Joel Bastos
Profile icon Joel Bastos
Pedro Araújo Pedro Araújo
Profile icon Pedro Araújo
View More author details

Table of Contents (21) Chapters

Preface 1. Section 1: Introduction
2. Monitoring Fundamentals 3. An Overview of the Prometheus Ecosystem 4. Setting Up a Test Environment 5. Section 2: Getting Started with Prometheus
6. Prometheus Metrics Fundamentals 7. Running a Prometheus Server 8. Exporters and Integrations 9. Prometheus Query Language - PromQL 10. Troubleshooting and Validation 11. Section 3: Dashboards and Alerts
12. Defining Alerting and Recording Rules 13. Discovering and Creating Grafana Dashboards 14. Understanding and Extending Alertmanager 15. Section 4: Scalability, Resilience, and Maintainability
16. Choosing the Right Service Discovery 17. Scaling and Federating Prometheus 18. Integrating Long-Term Storage with Prometheus 19. Assessments 20. Other Books You May Enjoy

Analyzing the time series database

A critical component of the Prometheus server is its time series database. Being able to analyze the usage of this database is essential to detect series churn and cardinality problems. Churn, in this context, refers to time series that become stale (for example, from the origin target stop being collected or the series disappearing from one scrape to the next), and a new series with slightly different identity starts being collected next. A usual example of churn is related to Kubernetes application deploys, where the pod instance IP address changes making the previous time series obsolete, and replacing it with a new one. This impacts performance when querying, as samples with – possibly – no relevance are returned.

Thankfully, there's an obscure tool within the source code for the Prometheus database that allows analyzing...

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