Master / Slave 공통

sudo su -
curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF > /etc/apt/sources.list.d/kubernetes.list
  deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update

apt install kubelet kubeadm kubectl kubernetes-cni -y

swap 제거 (master/worker 공통, root user)

sudo su -

swapoff -a
vi /etc/fstab
# swap에 해당하는 영역을 #로 커맨트