Unable to mount an Hetzner Volume

Steps

Diagnostic

Check the events

Kubernetes records most provisioning and mounting problems as Events:

• on the namespace
• on the PersistentVolumeClaim or the Pod:

Look at the Events section at the bottom of the output.

kubee kubectl describe pvc <PVC-NAME>
kubee kubectl describe pod <POD-NAME>

Check the controller logs

The controller is composed of the following container:

• Csi Driver (main container)

kubectl logs \
  -n kube-system -l app.kubernetes.io/name=hcloud-csi,app.kubernetes.io/component=controller \
  -c hcloud-csi-driver

• Resizer (sidecar)

kubectl logs \
  -n kube-system -l app.kubernetes.io/name=hcloud-csi,app.kubernetes.io/component=controller \
  -c csi-resizer

• Attacher (sidecar)

kubectl logs \
  -n kube-system -l app.kubernetes.io/name=hcloud-csi,app.kubernetes.io/component=controller \
  -c csi-attacher

https://github.com/hetznercloud/csi-driver/issues/46 https://github.com/k3s-io/k3s/issues/732#issuecomment-533896909

MountVolume.WaitForAttach failed for volume "combo-postgres-pv" :
volume 106135968 has GET error for
volume attachment csi-8eec466de784837604919617e7b87cd7746d2a2e1c0d712c9d1d06025825011e:
volumeattachments.storage.k8s.io "csi-8eec466de784837604919617e7b87cd7746d2a2e1c0d712c9d1d06025825011e"
is forbidden:
User "system:node:kube-server-01.eraldy.com" cannot get resource "volumeattachments"
in API group "storage.k8s.io" at the cluster scope: no relationship found between node 'kube-server-01.eraldy.com' and this object

2026-06-24T20:09:46.020271099Z E0624 20:09:46.018997       1 reflector.go:204] "Failed to watch" err="pods is forbidden: User \"system:serviceaccount:kube-system:hetzner-csi-controller\" cannot watch resource \"pods\" in API group \"\" at the cluster scope" logger="UnhandledError" reflector="k8s.io/client-go/informers/factory.go:161" type="*v1.Pod"

More - https://github.com/hetznercloud/csi-driver/blob/main/docs/kubernetes/guides/troubleshooting.md

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