node-setup.sh

#!/bin/bash

# Enable bridged traffic
cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF

sudo modprobe overlay
sudo modprobe br_netfilter

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables  = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward                 = 1
EOF

sudo sysctl --system

# Disable swap
sudo swapoff -a
sudo sed -i -E 's/(^\/swap.*)/# \1/' /etc/fstab

# Install dependencies
sudo apt install apt-transport-https ca-certificates curl gnupg lsb-release git -y

# Install containderd
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update
sudo apt install containerd.io -y
sudo systemctl enable containerd --now
containerd config default | sudo tee /etc/containerd/config.toml
sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
sudo systemctl restart containerd

# Install kubernetes packages
# Temporary fix since https://packages.cloud.google.com/apt/doc/apt-key.gpg is returning 500 error
echo 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 | base64 -d | sudo apt-key --keyring /usr/share/keyrings/kubernetes-archive-keyring.gpg add -
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
# sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
# 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
sudo apt update
sudo apt install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl