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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