kubeadm_worker_install.sh

K8S_VERSION="1.21.1-00"
HOST_NAME="node01"

#swap off
sudo swapoff -a

# hostname to 'node01'
hostnamectl set-hostname $HOST_NAME

sudo mkdir /etc/docker
cat <<EOF | sudo tee /etc/docker/daemon.json
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF

# Install Docker
sudo apt-get update
sudo apt-get install -y docker.io
sudo systemctl enable docker
sudo systemctl daemon-reload
sudo systemctl restart docker

echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
# Add a GPG key for the Packages
sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
sudo apt-get update
# Install kubelet, kubeadm, kubectl
sudo apt-get install -y kubeadm=$K8S_VERSION kubelet=$K8S_VERSION kubectl=$K8S_VERSION
sudo apt-mark hold kubelet kubeadm kubectl