Kubernetes Cluster Setup using Kubeadm

Welcome to the Kubernetes setup project! This repository demonstrates how to manually set up a Kubernetes cluster using kubeadm and access it locally for management and testing.

What is Kubeadm?

kubeadm is the official Kubernetes tool designed to help you bootstrap a production-ready Kubernetes cluster quickly and easily.

It handles:

• Cluster initialization
• Certificate generation
• API server bootstrapping
• Token-based worker node joining

Unlike managed Kubernetes services (like AKS, EKS, GKE), kubeadm gives you full control over every component of your cluster, making it ideal for learning, testing, or advanced production customization.

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Project Structure

This repository is structured into two main folders:

• kubeadm-k8s/:
  This directory contains the complete step-by-step guide to setting up a multi-node Kubernetes cluster manually using kubeadm. It includes:

  • Control-plane and worker node configuration
  • Required networking setup
  • Installation of dependencies like containerd, kubectl, kubelet, and kubeadm
  • Instructions for joining nodes and verifying cluster health

• kube-config/:
  This folder contains instructions for securely accessing the Kubernetes cluster from your local machine. It includes:

  • How to install kubectl locally
  • How to copy your kubeconfig file from the master VM
  • How to enable local DNS resolution
  • How to switch between clusters and contexts

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Who is This For?

This project is ideal for:

• Students and professionals learning Kubernetes administration from scratch
• DevOps engineers who want to understand the internals of Kubernetes setup
• Anyone preparing for Kubernetes certification exams (CKA, CKAD)
• Cloud-native developers who want to build a cluster in a custom environment

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Prerequisites

Before you dive in, make sure you have:

• Three Ubuntu VMs (1 master + 2 workers) with public IPs
• A way to SSH into each machine
• Basic networking knowledge (firewall rules, IPs, DNS)
• Patience and curiosity!

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Getting Started

1. Go to kubeadm-k8s/ and follow the setup instructions to build your cluster.
2. Then head to kube-config/ to configure secure local access via kubectl.
3. Test your cluster and deploy your first app!

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Feedback

If you find this project helpful or have suggestions, feel free to open an issue or submit a pull request. Contributions are welcome!

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