service monitor to probe k8s services via blackbox exporter

service-monitor.yaml

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: blackbox-exporter
spec:
  endpoints:
  - interval: 1m
    path: /probe
    scrapeTimeout: 10s
    params:
      module: [tcp_prober]
    relabelings:
    - sourceLabels: [__address__]
      targetLabel: __param_target
    - targetLabel: __address__
      replacement:  black-prometheus-blackbox-exporter:9115 # is the name:port of the blackbox exporter service
    - sourceLabels: [__param_target]
      targetLabel: instance
    - action: labelmap
      regex: __meta_kubernetes_service_label_(.+) # specify to monitor kubernets services
  jobLabel: blackbox-exporter
  selector:
    matchLabels:
      app.kubernetes.io/component: blackbox # monitor the services only with this label