prometheus.yaml

scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
    - targets: ['localhost:9090']

 # Blackbox Exporter
  - job_name: 'blackbox'
    scrape_interval: 10s
    metrics_path: /probe
    file_sd_configs:
      - files:
          - '/home/carsten/dev/prometheus/blackbox/targets/*.yml'
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [module]
        target_label: __param_module
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
#        replacement: 127.0.0.1:9115  # blackbox exporter
        source_labels: [exporter]
 # End Blackbox Exporter

sd_blackbox.yaml

- labels:
    module: icmp_ipv4
    exporter: 127.0.0.1:9115
  targets:
  - 8.8.8.8
  - 217.19.176.4
  - whitehouse.gov