Karmada

Abstract

1. Introduction

Karmada (Kubernetes Armada) is a Kubernetes management system that enables you to run your cloud-native applications across multiple Kubernetes clusters and clouds, with no changes to your applications. By speaking Kubernetes-native APIs and providing advanced scheduling capabilities, Karmada enables truly open, multi-cloud Kubernetes.

Karmada aims to provide turnkey automation for multi-cluster application management in multi-cloud and hybrid cloud scenarios, with key features such as centralized multi-cloud management, high availability, failure recovery, and traffic scheduling.

Karmada is a graduated project of the Cloud Native Computing Foundation (CNCF).

2. Objective

Open, Multi-Cloud, Multi-Cluster Kubernetes Orchestration

This project demonstrates how Go, Kubernetes can be applied to a real-world Blockchain & Cloud Computing problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Go 1.20 or later
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/karmada-io/karmada.git
cd karmada

1. Install karmada control plane components in a Kubernetes cluster which is known as host cluster.
2. Join a member cluster to karmada control plane.
3. Propagate an application by using karmada.
4. Start a Kubernetes cluster to run the Karmada control plane, aka. the host cluster.
5. Build Karmada control plane components based on a current codebase.
6. Deploy Karmada control plane components on the host cluster.
7. Create member clusters and join Karmada.
8. karmada-apiserver kubectl config use-context karmada-apiserver

hack/local-up-karmada.sh

Local Karmada is running.

To start using your Karmada environment, run:
  export KUBECONFIG="$HOME/.kube/karmada.config"
Please use 'kubectl config use-context karmada-host/karmada-apiserver' to switch the host and control plane cluster.

To manage your member clusters, run:
  export KUBECONFIG="$HOME/.kube/members.config"
Please use 'kubectl config use-context member1/member2/member3' to switch to the different member cluster.

kubectl create -f samples/nginx/deployment.yaml

$ kubectl get deployment
NAME    READY   UP-TO-DATE   AVAILABLE   AGE
nginx   2/2     2            2           20s

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add a CI/CD pipeline with GitHub Actions
• Deploy to a public test network or cloud free tier
• Add monitoring and cost alerts

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Why does this problem need a blockchain or cloud-native design?
2. Explain the smart contract / infrastructure components and how they interact.
3. How are gas costs or cloud costs kept under control?
4. How is the system secured (keys, IAM, access control)?
5. How would the solution scale to many more users?

9. Source Code & License

This project is developed by karmada-io and published on GitHub under the Apache License 2.0. Please follow the license terms and credit the original author when you use or modify this code.