https://github.com/electrocucaracha/k8s-distroless-demo

Distress demo project
https://github.com/electrocucaracha/k8s-distroless-demo

distroless graalvm-native-image jdeps jlink kind registry

Last synced: about 2 months ago
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Distress demo project

• Host: GitHub
• URL: https://github.com/electrocucaracha/k8s-distroless-demo
• Owner: electrocucaracha
• Created: 2024-10-31T19:12:53.000Z (7 months ago)
• Default Branch: master
• Last Pushed: 2025-04-04T01:17:18.000Z (about 2 months ago)
• Last Synced: 2025-04-04T02:24:28.715Z (about 2 months ago)
• Topics: distroless, graalvm-native-image, jdeps, jlink, kind, registry
• Language: Shell
• Homepage:
• Size: 69.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Measuring the Benefits of Distroless Containers

[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)

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## Summary

This demo project highlights the advantages of using Distroless containers by evaluating key metrics such as image size, deployment time, and data transfer efficiency.

### Objectives

- **Image Size Reduction**: Compare the size of a standard container image with a Distroless version.

- **Deployment Time Improvement**: Measure the deployment time reduction achieved by using Distroless containers.

- **Data Transfer Efficiency**: Analyze the impact on network usage and costs when deploying to cloud environments.

### Methodology

1. **Initial Setup**: Provision a Kubernetes cluster connected to a private Docker registry and create a standard container image, including build tools and a generic JRE.

1. **Implementation of Best Practices**: Utilize [Multi-stage builds][1] and [Distroless][2] best practices, along with tools like [jdeps][3] and [jlink][4] fro JRE optimization.

1. **Measurement**: Record metrics for image size, deployment time, and network usage during deployment to Kubernetes worker nodes.

### Outcomes

- Successfully reduced image size from 863MB to just 22.3MB.

- Lowered deployment time significantly, from 67.506 seconds to 14.515 seconds.

- Achieved ~58x reduction in data transfer from the private local registry to the seven Kubernetes worker nodes.

Using Distroless images can lead to monthly cost savings and minimize traffic congestion.

[1]: https://docs.docker.com/build/building/multi-stage/

[2]: https://github.com/GoogleContainerTools/distroless

[3]: https://dev.java/learn/jvm/tools/core/jdeps/

[4]: https://dev.java/learn/jvm/tools/core/jlink/