How to install Kubernetes using kubeadm in Ubuntu 20.04 LTS

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• Step 1
  
  Execute the below commands in both Master and Worker nodes.
  
  sudo su
  
  apt-get update
  
  apt-get install apt-transport-https
  
  apt-get install docker.io -y
  
  service docker restart
  
  curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add –
  
  echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" >/etc/apt/sources.list.d/kubernetes.list
  
  apt-get update
  
  apt-get install kubelet kubeadm kubectl kubernetes-cni -y

  Step 2 On Master
  
  kubeadm init
  
  >Copy the token and paste it into the worker node.
  
  Step 3 On Master
  
  Make sure you execute the below command as a normal user.
  
  mkdir -p $HOME/.kube
  
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

  Step 4 On Master

  kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
  
  kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.49.0/deploy/static/provider/baremetal/deploy.yaml

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