apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  labels:
    app: prometheus-operator
    chart: prometheus-operator-8.5.4
    heritage: Tiller
    release: prometheus-operator
  name: prometheus-operator-zfs-alertmanager.rules
  namespace: default
spec:
  groups:
  - name: zfsalertmanager.rules
    rules:
    - alert: ZFSVolumeUsageCritical
      annotations:
        message: The PersistentVolume claimed by {{ $labels.persistentvolumeclaim
          }} in Namespace {{ $labels.namespace }} is only {{ printf "%0.2f" $value
          }}% free.
      expr: |
        100 * kubelet_volume_stats_available_bytes{job="kubelet"}
          /
        kubelet_volume_stats_capacity_bytes{job="kubelet"}
          < 10
      for: 1m
      labels:
        severity: critical