Install and configure kubeadm and kubelet

In this chapter, we will install and configure kubeadm, kubelet and kubectl

These instructions are for Kubernetes v1.31.

• Install curl

  sudo apt-get update
  # apt-transport-https may be a dummy package; if so, you can skip that package
  sudo apt-get install -y apt-transport-https ca-certificates curl gpg

• Install keys needed for k8s packages

  curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg

• Add the appropriate Kubernetes apt repository

  # This overwrites any existing configuration in /etc/apt/sources.list.d/kubernetes.list
  echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.31/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list

• Update the apt package index, install kubelet, kubeadm and kubectl, and pin their version:

  sudo apt-get update
  sudo apt-get install -y kubelet kubeadm kubectl
  sudo apt-mark hold kubelet kubeadm kubectl

• Enable kubelet

  sudo systemctl enable --now kubelet