Raspberry Piにk8s - kubeadm
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 6.12.25+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.25-1+rpt1 (2025-04-30) aarch64 GNU/Linux
こちらを3台。
hostname
pi@raspberrypi:~ $ sudo hostnamectl set-hostname k8s-master
pi@raspberrypi:~ $ sudo hostnamectl set-hostname k8s-node1
pi@raspberrypi:~ $ sudo hostnamectl set-hostname k8s-node2
hosts
192.168.1.201 k8s-master
192.168.1.202 k8s-node1
192.168.1.203 k8s-node2
kernel modules
pi@k8s-node1:~ $ cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF
overlay
br_netfilter
pi@k8s-node1:~ $
kernel parameters
pi@k8s-node1:~ $ 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
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
pi@k8s-node1:~ $
cntainerd
wget https://github.com/containerd/containerd/releases/download/v2.1.0/containerd-2.1.0-linux-arm64.tar.gz
wget https://github.com/containerd/containerd/releases/download/v2.1.0/containerd-2.1.0-linux-arm64.tar.gz.sha256sum
sha256sum -c containerd-2.1.0-linux-arm64.tar.gz.sha256sum
sudo tar Cxzvf /usr/local containerd-2.1.0-linux-arm64.tar.gz
sudo systemctl daemon-reload
sudo systemctl enable --now containerd
runc
wget https://github.com/opencontainers/runc/releases/download/v1.3.0/runc.arm64
sudo install -m 755 runc.arm64 /usr/local/sbin/runc
CNI plugins
wget https://github.com/containernetworking/plugins/releases/download/v1.7.1/cni-plugins-linux-arm-v1.7.1.tgz
mkdir -p /opt/cni/bin
sudo mkdir -p /opt/cni/bin
sudo tar Cxzvf /opt/cni/bin cni-plugins-linux-arm-v1.7.1.tgz ./
sudo swapoff -a
kubeadm
sudo apt-get install -y apt-transport-https ca-certificates curl gpg
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.33/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:/v1.33/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get install -y kubelet kubeadm kubectl
sudo apt-mark hold kubelet kubeadm kubectl
kubeadm version
pi@k8s-master:~ $ kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"33", EmulationMajor:"", EmulationMinor:"", MinCompatibilityMajor:"", MinCompatibilityMinor:"", GitVersion:"v1.33.1", GitCommit:"8adc0f041b8e7ad1d30e29cc59c6ae7a15e19828", GitTreeState:"clean", BuildDate:"2025-05-15T08:25:51Z", GoVersion:"go1.24.2", Compiler:"gc", Platform:"linux/arm64"}
cgroup
/boot/firmware/cmdline.txt に cgroup_memory=1 cgroup_enable=memory
swapoff
sudo dphys-swapfile swapoff && sudo dphys-swapfile uninstall && sudo systemctl disable dphys-swapfile
