apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: blackbox-alerts
  namespace: monitoring
  labels:
    release: kube-prometheus-stack

spec:
  groups:
    - name: blackbox
      rules:

        - alert: DeviceDown
          expr: probe_success == 0
          for: 1m
          labels:
            severity: critical
          annotations:
            summary: "Device down"
            description: "{{ $labels.instance }} is DOWN"

        - alert: HighPing
          expr: probe_duration_seconds > 0.5
          for: 2m
          labels:
            severity: warning
          annotations:
            summary: "High ping"
            description: "{{ $labels.instance }} has high latency"