Is it possible to monitor PVC usage?

[hillbun]

Is it possible to monitor PVC usage and alert?

[metalmatze]

Yes, that's exposed by the kubelet which is one of the targets scraped by the prometheus-k8s out-of-the-box.

Look for metrics like kubelet_volume_stats_*.

[hillbun]

@metalmatze

Which dashboard I can view usage graph?

and which built-in alert rule?

[TheMeier]

KubePersistentVolumeFillingUp (or KubePersistentVolumeUsageCritical depending on Version)
KubePersistentVolumeErrors
From: https://github.com/kubernetes-monitoring/kubernetes-mixin/blob/master/alerts/storage_alerts.libsonnet