Hi, I found the reason for the problem. I did not assign the DaemonSet to the correct namespace. I am running all components in the namespace 'ceph-system'. After I fixed my DaemonSet configuration the plugin pods are running on my worker nodes and the error message is gone. --- kind: DaemonSet apiVersion: apps/v1 metadata:   name: csi-rbdplugin   namespace: ceph-system ...... === Ralph On 11.06.21 13:51, Ralph Soika wrote:

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

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