gistfile1.txt

swapoff -a
apt-get update
apt-get install docker.io -y
systemctl start docker
cat > /etc/docker/daemon.json <<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
  net.bridge.bridge-nf-call-ip6tables = 1
  net.bridge.bridge-nf-call-iptables = 1
EOF

sysctl --system
sudo apt-get update && sudo apt-get install -y apt-transport-https curl
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
  deb https://apt.kubernetes.io/ kubernetes-xenial main
EOF

apt-get update
apt-get install -y kubelet kubeadm kubectl
apt-mark hold kubelet kubeadm kubectl
systemctl daemon-reload
systemctl restart docker
systemctl enable docker
systemctl restart kubelet
systemctl enable kubelet
kubeadm init --apiserver-advertise-address=20.0.0.10 --pod-network-cidr=20.123.0.0/16 --node-name master --apiserver-cert-extra-sans="20.0.0.10" --kubernetes-version stable-1.19
kubeadm reset -f
kubeadm init --apiserver-advertise-address=20.0.0.10 --pod-network-cidr=20.123.0.0/16 --node-name master --apiserver-cert-extra-sans="20.0.0.10" --kubernetes-version stable-1.19