kubeadm cluster install

##### ROOT COMMANDS
[root@control cka]# history
    1  cat /etc/redhat-release
    2  df -h
    3  free -m
    4  lscpu
    5  yum install -y git vim bash-completion
    6  ip a
    7  ssh 192.168.29.51
    8  ssh 192.168.29.52
    9  git clone https://github.com/sandervanvugt/cka
   10  ssh 192.168.29.51
   11  ssh 192.168.29.52
   12  cd cka
   13  ls
   14  ./setup-docker.sh
   15  ./setup-kubetools.sh
   16  ssh 192.168.29.51
   17  ssh 192.168.29.52
   18  history
   19  ./counter.sh 12
   20  kubeadm init
   21  vim /etc/hosts
   22  kubeadm init
   23  #kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
   24  vim todo.txt
   25  vim /tmp/todo.txt
   26  su - student
   27  cat /tmp/todo.txt
   28  kubeadm --help
   29  kubeadm reset
   30  rm -rf /home/student/.kube/
   31  cat /etc/hosts
   32  ip a
   33  kubeadm init
   34  su - student
   35  history

###### /etc/hosts contents
[root@control cka]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.29.50	control.example.com
192.168.29.51	worker1.example.com
192.168.29.52	worker2.example.com

###### user commands
    1  mkdir -p $HOME/.kube
    2  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    3  sudo chown $(id -u):$(id -g) $HOME/.kube/config
    4  ls -l .kube/config
    5  kubectl get all
    6  kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
    7  kubectl get pods -A
    8  exit
    9  mkdir -p $HOME/.kube
   10  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
   11  sudo chown $(id -u):$(id -g) $HOME/.kube/config
   12  kubectl get pods -A
   13  kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
   14  kubectl get pods -A
   15  ssh root@192.168.29.51
   16  kubectl get nodes
   17  ssh root@192.168.29.52
   18  kubectl get nodes
   19  kubectl get pods -A
   20  kubectl get pods -A -o wide
   21  ps aux | grep apiserver
   22  history