k8s_ubuntu

#!/bin/bash
# =====  Version   =====
# k8s_version=1.28
# HOSTNAME=ubuntu-pve

if [ $# -gt 1 ]; then
    k8s_version=$1
    shift
else
    exit 1
fi

# =====   Prepare    =====
# ----- disable swap -----
sudo sed -i '/swap/s/^/#/' /etc/fstab
sudo swapoff -a
sudo cat /etc/fstab
# ----- set iptables -----
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

# -----  Package   -----
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl gpg

# =====  Install   =====
# ----- Kubernetes -----
sudo mkdir -p -m 755 /etc/apt/keyrings
curl -fsSL https://pkgs.k8s.io/core:/stable:/v$k8s_version/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v'$k8s_version'/deb/ /' | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
sudo apt update
# apt-cache show kubectl | grep Version | awk {'print $2'}
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl

curl -LO "https://github.com/Mirantis/cri-dockerd/releases/download/v0.3.9/cri-dockerd_0.3.9.3-0.ubuntu-$(lsb_release -cs)_amd64.deb"
sudo dpkg -i "cri-dockerd_0.3.9.3-0.ubuntu-$(lsb_release -cs)_amd64.deb"
rm "cri-dockerd_0.3.9.3-0.ubuntu-$(lsb_release -cs)_amd64.deb"

# =====  Cluster   =====
if [ $# -le 2 ]
then
    sudo kubeadm init --v=5 --pod-network-cidr=10.244.0.0/16 --cri-socket unix:///var/run/cri-dockerd.sock $*
    mkdir -p $HOME/.kube
    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config
    kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml

    # Cilium
    # CILIUM_CLI_VERSION=$(curl -s https://raw.githubusercontent.com/cilium/cilium-cli/main/stable.txt)
    # CLI_ARCH=amd64
    # if [ "$(uname -m)" = "aarch64" ]; then CLI_ARCH=arm64; fi
    # curl -L --fail --remote-name-all https://github.com/cilium/cilium-cli/releases/download/${CILIUM_CLI_VERSION}/cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}
    # sha256sum --check cilium-linux-${CLI_ARCH}.tar.gz.sha256sum
    # sudo tar xzvfC cilium-linux-${CLI_ARCH}.tar.gz /usr/local/bin
    # rm cilium-linux-${CLI_ARCH}.tar.gz{,.sha256sum}
    # cilium install --version 1.15.4
    # cilium status --wait

    kubectl cluster-info
    # sudo rm -rf /etc/cni/net.d
    # kubectl taint node ${HOSTNAME} node-role.kubernetes.io/master-
else
    sudo kubeadm join $* --cri-socket unix:///var/run/cri-dockerd.sock
fi