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Docker for Developers

You're reading from   Docker for Developers Develop and run your application with Docker containers using DevOps tools for continuous delivery

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781789536058
Length 468 pages
Edition 1st Edition
Tools
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Authors (3):
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Richard Bullington-McGuire Richard Bullington-McGuire
Author Profile Icon Richard Bullington-McGuire
Richard Bullington-McGuire
Michael Schwartz Michael Schwartz
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Michael Schwartz
Andrew K. Dennis Andrew K. Dennis
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Andrew K. Dennis
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Toc

Table of Contents (21) Chapters Close

Preface 1. Section 1: An Introduction to Docker – Containers and Local Development
2. Chapter 1: Introduction to Docker FREE CHAPTER 3. Chapter 2: Using VirtualBox and Docker Containers for Development 4. Chapter 3: Sharing Containers Using Docker Hub 5. Chapter 4: Composing Systems Using Containers 6. Section 2: Running Docker in Production
7. Chapter 5: Alternatives for Deploying and Running Containers in Production 8. Chapter 6: Deploying Applications with Docker Compose 9. Chapter 7: Continuous Deployment with Jenkins 10. Chapter 8: Deploying Docker Apps to Kubernetes 11. Chapter 9: Cloud-Native Continuous Deployment Using Spinnaker 12. Chapter 10: Monitoring Docker Using Prometheus, Grafana, and Jaeger 13. Chapter 11: Scaling and Load Testing Docker Applications 14. Section 3: Docker Security – Securing Your Containers
15. Chapter 12: Introduction to Container Security 16. Chapter 13: Docker Security Fundamentals and Best Practices 17. Chapter 14: Advanced Docker Security – Secrets, Secret Commands, Tagging, and Labels 18. Chapter 15: Scanning, Monitoring, and Using Third-Party Tools 19. Chapter 16: Conclusion – End of the Road, but not the Journey 20. Other Books You May Enjoy

Testing scalability and performance with k6

The k6 framework (https://k6.io) is a programmable open source load testing tool. We are going to show you how to use it to generate a more realistic load pattern than you could generate using a simple load generator such as Apache Bench (ab).

This framework is quite simple to set up and use thanks to its Docker image, which is available on Docker Hub. You can find the Quick Start instructions at https://k6.io/docs/getting-started/running-k6.

To create a load test using k6, you need to use JavaScript using k6's library routines. To perform a smoke test, your script would need to look something like this:

import http from 'k6/http';
export default function() {
  http.get('https://shipit-v8.eks.example.com/');
}

This script is roughly equivalent to using the ab utility to stress test a web server. Create a file called hello.js using the preceding source code, replacing shipit-v8.eks.example.com...

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