labels for prometheus targets

gistfile1.yml

- job_name: 'ping'
  scrape_interval: 10s
  scrape_timeout: 5s
  metrics_path: /probe
  params:
    module: [icmp_ipv4]
  static_configs:
    - targets:
      - lab.example.com;dev1;192.168.1.1
      - lab.example.com;kvm;192.168.16.1
      - lab.example.com;trusted;172.27.3.4
      labels:
        location: lab
  relabel_configs:
    - source_labels: [__address__]  # add device name label
      regex: '(.*);(.*);(.*)'
      target_label: instance
      replacement: $1
    - source_labels: [__address__]  # add interface name label
      regex: '(.*);(.*);(.*)'
      target_label: interface
      replacement: $2
    - source_labels: [__address__]  # add the IP label
      regex: '(.*);(.*);(.*)'
      target_label: ip
      replacement: $3
    - source_labels: [ip]           # set the target to the IP
      target_label: __param_target
    - target_label: __address__
      replacement: 127.0.0.1:9115  # Blackbox exporter.