Kubernetes script for kubeadm

run.sh

sudo apt install fish git -y


echo ""
echo ""
echo ""
echo ""
echo "Installing docker...."

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh

sudo usermod -a -G docker $(whoami)

echo ""
echo ""
echo ""
echo "installing kubernetes"
sudo apt-get update
# apt-transport-https may be a dummy package; if so, you can skip that package
sudo apt-get install -y apt-transport-https ca-certificates curl gnupg
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.33/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
sudo chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg # allow unprivileged APT programs to read this keyring
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.33/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo chmod 644 /etc/apt/sources.list.d/kubernetes.list   # helps tools such as command-not-found to work correctly
sudo apt-get update
sudo apt-get install -y kubectl
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
sudo swapoff -a
sudo systemctl enable --now kubelet

echo ""
echo ""
echo ""
echo "configuring for kubeadm..."
echo -n " cgroup_memory=1 cgroup_enable=memory" >> /boot/cmdline.txt
sudo mkdir -p /etc/containerd
containerd config default | sudo tee /etc/containerd/config.toml > /dev/null
echo "you may need to update containerd configuration with: 'enable_unprivileged_ports = true' and 'sandbox_image' set to 'registry.k8s.io/pause:3.9'"

sudo systemctl enable --now containerd
sudo systemctl restart containerd
sudo chsh -s $(which fish) $USER
echo "reboot before running 'kubeadm init' as sudo"
echo "make sure to set up a cronjob for disabling swap and restarting kubelet"
echo "add calico with: 'kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml' for easy networking."