Container Storage Interface driver for Hetzner Cloud

This is a Container Storage Interface driver for Hetzner Cloud enabling you to use Volumes within Kubernetes. Please note that this driver requires Kubernetes 1.13 or newer.

Getting Started

1. Make sure that the following feature gates are enabled in your cluster (kubelet and kube-apiserver):

   --feature-gates=CSINodeInfo=true,CSIDriverRegistry=true

   Also make sure that privileged pods are allowed in your cluster (kubelet and kube-apiserver):

   --allow-privileged=true

   See Enabling features and Enable privileged Pods in the Kubernetes CSI documentation.

2. Create the CSINodeInfo resource:

   kubectl create -f https://raw.githubusercontent.com/kubernetes/csi-api/master/pkg/crd/manifests/csinodeinfo.yaml

   See Enabling CSINodeInfo in the Kubernetes CSI documentation.

3. Create an API token in the Hetzner Cloud Console.

4. Create a secret containing the token:

   apiVersion: v1
   kind: Secret
   metadata:
     name: hcloud-csi
     namespace: kube-system
   stringData:
     token: YOURTOKEN

5. Deploy the CSI driver and wait until everything is up and running:

   kubectl apply -f https://raw.githubusercontent.com/hetznercloud/csi-driver/master/deploy/kubernetes/hcloud-csi.yml

6. To verify everything is working, create a persistent volume claim and a pod which uses that volume:

   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: csi-pvc
   spec:
     accessModes:
     - ReadWriteOnce
     resources:
       requests:
         storage: 10Gi
     storageClassName: hcloud-volumes
   ---
   kind: Pod
   apiVersion: v1
   metadata:
     name: my-csi-app
   spec:
     containers:
       - name: my-frontend
         image: busybox
         volumeMounts:
         - mountPath: "/data"
           name: my-csi-volume
         command: [ "sleep", "1000000" ]
     volumes:
       - name: my-csi-volume
         persistentVolumeClaim:
           claimName: csi-pvc

   Once the pod is ready, exec a shell and check that your volume is mounted at /data.

License

MIT license