CKA - setup kube cluster

   1  sudo apt install vim git -y
    2  git clone https://github.com/sandervanvugt/cka
    3  cd cka
    4  ls
    5  sudo ./setup-container.sh
    6  ls
    7  sudo ./setup-kubetools-specific-version.sh
    8  history
    9  sudo kubeadm init
   10  mkdir -p $HOME/.kube
   11  kubectl get all
   12  kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
   13  history
   14  kubectl get nodes
   15  kubectl create deploy testginx --image=nginx --replicas=3
   16  source <(kubectl completion bash)
   17  kubectl get all
   18  ./counter.sh 20
   19  history