deploying Portainer on Kubernetes Cluster failed - kubernetes

Question

after deploying Portainer on Kubernetes Cluster (1 master, 2 workers), following https://documentation.portainer.io/v2.0/deploy/ceinstallk8s/, by
helm install --create-namespace -n portainer portainer portainer/portainer --set persistence.storageClass=slow
I got the status:
kubectl get all -n portainer
NAME READY STATUS RESTARTS AGE
pod/portainer-6cb48f955f-qmtdq 0/1 Pending 0 2d
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/portainer NodePort 10.97.158.200 <none> 9000:30777/TCP,30776:30776/TCP 2d3h
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/portainer 0/1 1 0 2d
NAME DESIRED CURRENT READY AGE
replicaset.apps/portainer-6cb48f955f 1 1 0 2d
So,
The pod is not READY, with STATUS Pending.
The service is up but has no EXTERNAL-IP.
The deployment is not READY or AVAILABLE.
The ReplicaSet is not READY.
And I can't access the instance on port 30777.
i.e. http://20.199.64.113:30777/
More 'kubectl describe' info:
root#kubemaster:/home/kubemaster# kubectl describe pod portainer -n portainer
Name: portainer-7b94d88f67-plz9d
Namespace: portainer
Priority: 0
Node: <none>
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 129m default-scheduler 0/3 nodes are available: 3 pod has unbound immediate Persiste
root#kubemaster:/home/kubemaster# kubectl describe pvc portainer -n portainer
Name: portainer
Namespace: portainer
StorageClass: slow
Status: Pending
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning ProvisioningFailed 2m22s (x259 over 9h) persistentvolume-controller Failed to provision volume with S
root#kubemaster:/home/kubemaster# kubectl describe pv portainer -n portainer
Error from server (NotFound): persistentvolumes "portainer" not found
I did researched the below error/warning:
Warning FailedScheduling 129m default-scheduler 0/3 nodes are available: 3 pod has unbound immediate PersistentVolumeClaims.
Warning ProvisioningFailed 2m22s (x259 over 9h) persistentvolume-controller Failed to provision volume with StorageClass "slow": AzureDisk - failed to get Azure Cloud Provider. GetCloudProvider returned <nil> instead
But still wasn't able to enable Portainer instance.
Is there anything i missed out or anyway to debug
thanks ahead

Answer 1

If you are using PersistentVolumeClaim you need a volume provisioner for Dynamic Volume Provisioning. The bigger cloud providers typically has this.
If you don't have a volume provisioner in your cluster, you have to create a PersistentVolume resource and possibly also a StorageClass and declare how to use your storage system.
Take a look: portainer-on-kubernetes.
So in your case as you have mentioned you can install external volume provisioner - NFS subdir external provisioner.