How to Install Ubuntu on Kubernetes

Introduction

• Kubernetes: Open-source platform for deployment and management of containers.

Step-by-Step Installation Guide

Step 1: Install Necessary Dependencies

1. Update system packages: sudo apt-get update
   • Enter password if prompted.
2. Install app-transport-https:
   • For making repositories accessible via HTTPS.
   sudo apt-get install app-transport-https

Step 2: Install Docker

1. Install Docker: sudo apt install docker.io
   • Choose 'y' when prompted.
2. Start and enable Docker: sudo systemctl start docker sudo systemctl enable docker

Step 3: Install Kubernetes Components

1. Install curl command:
   • For sending data using a URL syntax.
   sudo apt-get install curl
2. Download and add key for Kubernetes installation:
   • Download the key:
   sudo curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
3. Add Kubernetes repository:
   • Change permission of file:
   sudo chmod 644 /etc/apt/sources.list.d/kubernetes.list
   • Add repository info to the file:
   sudo bash -c 'cat <<EOF >/etc/apt/sources.list.d/kubernetes.list deb https://apt.kubernetes.io/ kubernetes-xenial main EOF'
4. Check for available updates: sudo apt-get update
5. Install Kubernetes components:
   • Install kubelet, kubeadm, kubectl, kubernetes-cni:
   sudo apt-get install -y kubelet kubeadm kubectl kubernetes-cni

Step 4: Initialize the Master Node

1. Disable swap: sudo swapoff -a
2. Initialize Kubernetes: sudo kubeadm init
3. Set up Cluster Configuration:
   • Run the following commands:
   mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
4. Deploy Pods: kubectl apply -f https://docs.projectcalico.org/v3.14/manifests/calico.yaml
5. Check pods status: kubectl get pods -A

Conclusion

• Successfully installed and configured Ubuntu on Kubernetes.
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