Volume stats missing

[kibs]

What did you do? (required. The issue will be closed when not provided.)

Setup kube-prometheus (https://github.com/coreos/prometheus-operator/tree/master/contrib/kube-prometheus)

What did you expect to happen?

Being able to see PV stats, like diskspace free etc. There is an dashboard for this already added, but data was empty. Checked out prometheus data and didn't find any metrics named kubelet_volume_stats_*

Searched around, and it looks like from my understanding that the driver should implement this.

https://stackoverflow.com/questions/44718268/how-to-monitor-disk-usage-of-kubernetes-persistent-volumes?rq=1

• CSI Version:
  latest managed DO cluster

• Kubernetes Version:
  1.3.14 managed DO cluster

[welcome]

Thank you for creating the issue! One of our team members will get back to you shortly with additional information.

[ghost]

I'm facing the same situation (DO-managed k8s 1.13.4). No volume metrics are exposed.

$ curl -skH 'Authorization: Bearer ...' https://10.xxx.xxx.xxx:10250/metrics | grep ^kubelet_volume | wc -l
0

Related info: coreos/prometheus-operator#2359

Having suffered from a volume with no space left on device just recently I'd like to hear if there's any update on this issue.

[boedy]

In need of the same requirement. Critical to have the ability to send alerts if volume is reaching full capacity.

While scanning through the drive plugin code it seem the NodeGetVolumeStats method is not yet implemented.

[timoreimann]

I have finished what I think should approach a working implementation of the requested feature. Still need to run more tests to confirm.