hub pod fails on k3s

[bpfrd]

Hello,

I deployed nbgrader-k8s on a single-node k3s cluster. it seems that the hub pod fails. here is more info:

centos@master-01$ kubectl get po
NAME                         READY   STATUS    RESTARTS   AGE
pod/hub-c475d685f-qf2s9      0/1     Pending   0          6m39s
pod/proxy-75c75c7495-hdqdc   1/1     Running   0          6m39s

centos@master-01$ kubectl describe pod/hub-c475d685f-qf2s9
Events: <none>

I was wondering how I can resolve this issue. I already changed storageclass to "local-path" which is k3s' default. Should I change any other config params?
Thanks
best

[bpfrd]

here info about volumes:

[centos@master-01 jnbk8s]$ kubectl get pvc
NAME                STATUS    VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
nbgrader-exchange   Pending                                                                        local-path     47s
hub-db-dir          Bound     pvc-a24b35bc-6ee5-49d5-82af-dce32f7ec5be   1Gi        RWO            local-path     47s
[centos@master-01 jnbk8s]$ kubectl get pv
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                STORAGECLASS   REASON   AGE
pvc-a24b35bc-6ee5-49d5-82af-dce32f7ec5be   1Gi        RWO            Delete           Bound    default/hub-db-dir   local-path              48s

[bpfrd]

and this is after a long time:

Events:
  Type     Reason            Age                 From               Message
  ----     ------            ----                ----               -------
  Warning  FailedScheduling  27m                 default-scheduler  running PreBind plugin "VolumeBinding": binding volumes: timed out waiting for the condition
  Warning  FailedScheduling  7m2s (x2 over 17m)  default-scheduler  running PreBind plugin "VolumeBinding": binding volumes: timed out waiting for the condition