Hi, I try to connect my new ceph cluster (octopus) with my kubernetes system. Therefor I followed the setup guide form the official documentation: https://docs.ceph.com/en/octopus/rbd/rbd-kubernetes/ The csi-rbdplugin-provisioner is running successful on all my kubernetes worker nodes (as far as I can see). Now I try to deploy the nginx example : --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: ceph-pvc spec: accessModes: - ReadWriteOnce volumeMode: Filesystem resources: requests: storage: 1Gi storageClassName: ceph --- apiVersion: v1 kind: Pod metadata: name: csi-rbd-demo-pod spec: containers: - name: web-server image: nginx volumeMounts: - name: mypvc mountPath: /var/lib/www/html volumes: - name: mypvc persistentVolumeClaim: claimName: ceph-pvc readOnly: false A Persitence volume is created $ kubectl get pv .... pvc-5c64ed45-adde-4fe7-9b38-9d4c7a8f7d34 1Gi RWO Delete Bound default/ceph-pvc ceph 7m15s and also the persitence volume claim: $ kubectl get pvc NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE ceph-pvc Bound pvc-5c64ed45-adde-4fe7-9b38-9d4c7a8f7d34 1Gi RWO ceph 8m14s But the POD is not deployed, because of the following error message: MountVolume.MountDevice failed for volume "pvc-5c64ed45-adde-4fe7-9b38-9d4c7a8f7d34" : kubernetes.io/csi: attacher.MountDevice failed to create newCsiDriverClient: driver name rbd.csi.ceph.com not found in the list of registered CSI drivers Can someone help me to understand the meaning of this error message? Did I need to install something else ? Maybe a ceph-fs-plugin...? Thanks for any help === Ralph --