k3d on Raspberry Pi

• install Ubuntu
• install docker
  • curl https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
  • sudo add-apt-repository "deb [arch=arm64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  • sudo apt install docker-ce docker-ce-cli containerd.io
• install k3d
  • wget -O k3d-linux-arm64 https://github.com/rancher/k3d/releases/download/v3.1.5/k3d-linux-arm64
  • sudo mv k3d-linux-arm64 /usr/local/bin/k3d
  • sudo chmod +x /usr/local/bin/k3d
• add cgroup_memory=1 cgroup_enable=memory to /boot/firmware/cmdline.txt
• optional: install kubectl
  • curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
  • sudo add-apt-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"
  • sudo apt install kubectl
• sudo reboot
• setup k3s cluster
  • sudo k3d cluster create raspi -a 1 -p 80:80@loadbalancer
  • sudo k3d kubeconfig get -a
  • move to local machine, replace 0.0.0.0 with host-name
• samples
  • kubectl run -i -t gcc --image=gcc --rm --command -- /bin/bash -i -l
• build k3s
  • apt install make
  • git clone https://github.com/rancher/k3s.git
  • make
• run built k3s
  • find image id
  • k3d cluster create debug -a 1 -p 80:80@loadbalancer -i c4e1c8d53e11

hello-kubernetes.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: hello-kubernetes
  labels:
    app: hello-kubernetes
spec:
  rules:
  - http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: hello-kubernetes
            port: 
              number: 80
---
apiVersion: v1
kind: Service
metadata:
  name: hello-kubernetes
  labels:
    app: hello-kubernetes
spec:
  type: ClusterIP
  ports:
    - name: http
      port: 80
      targetPort: 80
  selector:
    app: hello-kubernetes
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-kubernetes
  labels:
    app: hello-kubernetes
spec:
  replicas: 1
  selector:
    matchLabels:
      app: hello-kubernetes
  template:
    metadata:
      labels:
        app: hello-kubernetes
    spec:
      containers:
      - name: hello-kubernetes
        image: nginx
        ports:
        - containerPort: 80