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