sriparthu

Kubernetes minikube and kubeadm installation

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sri parthu
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Table of contents

Minikube installation

This guide provides step-by-step instructions for installing Minikube on Ubuntu. Minikube allows you to run a single-node Kubernetes cluster locally for development and testing purposes.

Pre-requisites

  • Ubuntu OS

  • sudo privileges

  • Internet access

  • Instance t2.medium

Step 1: Update System Packages

  • Update your package lists to make sure you are getting the latest version and dependencies.
sudo apt-get update && sudo apt-get upgrade -y

Step 2: Install Required Packages

  • Install some basic required packages.
sudo apt install -y curl wget apt-transport-https

Step 3: Install Docker

  • Minikube can run a Kubernetes cluster either in a VM or locally via Docker. This guide demonstrates the Docker method.
sudo apt install -y docker.io && sudo apt install -y docker-compose
  • Start and enable Docker.
sudo systemctl enable docker && sudo systemctl start docker
  • Add current user to docker group (To use docker without root) and logout (use the sudo reboot command) and connect again.
sudo usermod -aG docker $USER && newgrp docker && sudo reboot

Step 4: Install Minikube

  • First, download the Minikube binary using curl:
curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
  • Make it executable and move it into your path:
chmod +x minikube
sudo mv minikube /usr/local/bin/

Step 6: Start Minikube

  • Now, you can start Minikube with the following command:
minikube start --driver=docker

Step 7: Check Cluster Status

  • Check the cluster status with:
minikube status
  • You can also use kubectl to interact with your cluster:
sudo snap install kubectl --classic

kubectl get nodes

Kubeadm installation

This guide provides step-by-step instructions for installing Kubeadm on Ubuntu. Kubeadm allows you to run a Master and Worker nodes Kubernetes cluster locally for development and testing purposes.

Pre-requisites

  • Ubuntu OS

  • sudo privileges

  • Internet access

  • Instance t2.medium (2 instances)

Kubeadm Installation

Both master and worker nodes ⬇️

sudo su
apt update -y
apt install docker.io -y

systemctl start docker
systemctl enable docker

curl -fsSL "https://packages.cloud.google.com/apt/doc/apt-key.gpg" | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/kubernetes-archive-keyring.gpg
echo 'deb https://packages.cloud.google.com/apt kubernetes-xenial main' > /etc/apt/sources.list.d/kubernetes.list

apt update -y
apt install kubeadm=1.20.0-00 kubectl=1.20.0-00 kubelet=1.20.0-00 -y

# To connect with cluster execute above commands on master node and worker node respectively

Master node⬇️

sudo su
kubeadm init

# To start using your cluster, you need to run the following as a regular user:
  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

# Alternatively, if you are the root user, you can run:
  export KUBECONFIG=/etc/kubernetes/admin.conf

kubectl apply -f https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s.yaml

kubeadm token create --print-join-command

Note:-Expose port 6443 in the Security group for the Worker to connect to the Master Node

Worker node⬇️

sudo su
kubeadm reset pre-flight checks
-----> Paste the Join command on worker node and append `--v=5` at end

#To verify cluster connection

On master node⬇️

kubectl get nodes

Happy Learning

Thanks For Reading! :)

-Sri Parthu💝💥