install single-node k3s cluster instead of containerd

I can install with these commands on debian buster arm64 though can not on bullseye.

at first intall docker

sudo apt-get update
sudo apt-get install ca-certificates curl gnupg lsb-release
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io
sudo docker run hello-world

then install k3

curl -sfL https://get.k3s.io | sh -s - --docker
systemctl status k3s

uninstall

/usr/local/bin/k3s-uninstall.sh

create deployment

create yaml file

cat <<EOF > nginx-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  labels:
    app: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx-test
        image: nginx-test:latest
        imagePullPolicy: Never
        ports:
        - containerPort: 80
EOF

create and confirm the deployment

sudo kubectl create -f nginx-deployment.yaml
sudo kubectl get deploy
sudo kubectl get pod
sudo kubectl exec -it <pod name> -- curl localhost

create service

create yaml file

cat <<EOF > nginx-service.yaml
kind: Service
apiVersion: v1
metadata:
  name: my-service
spec:
  type: NodePort
  selector:
    app: nginx
  ports:
  - protocol: TCP
    targetPort: 80
    port: 80

create and confirm the service

sudo kubectl create -f nginx-service.yaml
sudo kubectl get svc
curl x.x.x.x

modify service

sudo kubectl apply -f nginx-deployment.yaml
sudo kubectl get svc

delete srvice

sudo kubectl delete svc <service name>

delete deployment

sudo kubectl delete -f ./nginx-deployment.yaml