Kubernetes (K8s) is a powerful container orchestration platform that has become the de facto standard for managing containerised workloads. However, Kubernetes can be complex to deploy and manage, especially for small-scale deployments or edge computing environments. That's where k3s comes in – a lightweight, easy-to-deploy Kubernetes distribution designed for resource-constrained environments. In this article, we'll explore the differences between k3s and k8s.

What is Kubernetes?

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. It was originally developed by Google and is now managed by the Cloud Native Computing Foundation (CNCF). Kubernetes provides a powerful set of features, including automatic load balancing, rolling updates, and self-healing, making it ideal for large-scale deployments.

What is k3s?

K3S is a lightweight Kubernetes distribution developed by Rancher Labs. It is designed to be a fully compliant Kubernetes distribution but with a much smaller footprint. K3S is optimised for resource-constrained environments, such as edge computing, IoT, and ARM-based systems. It has a small binary size, requiring only 40 MB of disk space, and a minimal memory footprint, requiring only 512 MB of RAM. k3s is also easy to deploy and manage, making it ideal for small-scale deployments.

Differences between k3s and k8s

Footprint and resource usage

K3S has a smaller binary size and a minimal memory footprint compared to K8S, making it ideal for resource-constrained environments. K8S requires more resources and has a larger binary size, making it more suitable for larger-scale deployments.

Ease of deployment and management

K3S is designed to be easy to deploy and manage, with a simplified installation process and a smaller set of components. K8S can be complex to deploy and manage, especially for small-scale deployments or edge computing environments.

Features and functionality

K8S provides a rich set of features and functionality, including automatic load balancing, rolling updates, and self-healing. k3s is fully compliant with the Kubernetes API and provides most of the same features as k8s, but with a smaller set of components.

Community support

K8S has a large and active community of developers and contributors, with a wide range of tools and plugins available. However, K3S is a relatively new project, and its community is still growing, with a smaller set of tools and plugins available.

Which one should you choose?

The choice between K3S and K8S depends on your specific requirements and use case. If you have a large-scale deployment with complex requirements, K8S may be the better choice. However, if you have a small-scale deployment or edge computing environment with limited resources, K3S is definitely be the better choice. It is also a good choice if you need a lightweight and easy-to-deploy Kubernetes distribution.

In conclusion, both K3S and K8S have their strengths and weaknesses, and the choice between them depends on your specific requirements and use case. K3S provides a lightweight and easy-to-deploy Kubernetes distribution optimised for resource-constrained environments, while K8S provides a rich set of features and functionality suitable for large-scale deployments.

About the Author

Hello, I am Tuhin Sengupta, Co-Founder & Co-CTO of Frigga Cloud Labs. I lead R&D and Cloud Architecture at Frigga. My expertise lies in Cloud Components, Networks, Kubernetes and Deployment Management. I have helped several companies adopt cloud. And currently, I am heading Hydraenium development.

I have started this group named - "The Open Cloud Forum", which is intended to build a community of Tech Enthusiasts, Entrepreneurs, and Investors to contribute to The Open Cloud Network. Please feel free to join the group for more updates.

K8S vs K3S - differences and which to choose?