apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: k8s-storage-rules
  namespace: monitoring
  labels:
    release: monitoring
spec:
  groups:
    - name: storage.critical
      rules:
        - alert: KubePersistentVolumeFull
          expr: kubelet_volume_stats_available_bytes / kubelet_volume_stats_capacity_bytes < 0.03
          for: 2m
          labels:
            severity: critical
          annotations:
            summary: "PVC plein"
            description: "Le PVC {{ $labels.namespace }}/{{ $labels.persistentvolumeclaim }} est plein."

        - alert: KubePersistentVolumeFillingUp
          expr: predict_linear(kubelet_volume_stats_available_bytes[6h], 4*3600) < 0
          for: 1h
          labels:
            severity: critical
          annotations:
            summary: "PVC bientôt plein"
            description: "Le PVC {{ $labels.namespace }}/{{ $labels.persistentvolumeclaim }} sera plein dans moins de 4h."