Ubuntu

apt update && apt upgrade -y
apt install apt-transport-https software-properties-common ca-certificates socat wget curl nano -y
swapoff -a
modprobe overlay
modprobe br_netfilter
cat << EOF | tee /etc/sysctl.d/kubernetes.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF
sysctl --system
mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
chmod a+r /etc/apt/keyrings/docker.gpg
cat >/etc/apt/sources.list.d/docker.list<<EOD
deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu focal stable
EOD
apt update && apt install containerd.io -y
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
chmod a+r /etc/apt/keyrings/kubernetes-apt-keyring.gpg
cat >/etc/apt/sources.list.d/kubernetes.list  << EOD
deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.31/deb/ /
EOD
apt update
apt-get install -y kubeadm=1.31.1-1.1 kubelet=1.31.1-1.1 kubectl=1.31.1-1.1
apt-mark hold kubelet kubeadm kubectl