Mounting Persistant Volume Claim Problem

Hi Team,

Facing the following while deploying the deployments,

Warning FailedMount 13m (x6394 over 11d) kubelet, worker-2 Unable to mount volumes for pod “ceph-pod1_default(b4b0631d-8dcf-11e9-90ea-fa163effe814)”: timeout expired waiting for volumes to attach or mount for pod “default”/“ceph-pod1”. list of unmounted volumes=[ceph-vol1]. list of unattached volumes=[ceph-vol1 default-token-7zztc]
** Warning FailedMount 2m12s (x9590 over 11d) kubelet, worker-2 (combined from similar events): MountVolume.WaitForAttach failed for volume “pvc-23b5a85d-8dcf-11e9-842f-fa163ec289ff” : fail to check rbd image status with: (exit status 1), rbd output: (2019-06-26 05:22:37.024000 7f6086cd7100 0 librados: client.nks-admin authentication error (1) Operation not permitted**
rbd: couldn’t connect to the cluster!

Could you please help me to resolve this issue, i don’t find solution anywhere.!!

I attached screenshots, please check and let me know.
Please let me know if you need any more details.

Thanks & Regards,
Raghavendra Babu K