example of prometheus-kubernetes

[CodeJuan]

https://github.com/prometheus/prometheus/blob/master/documentation/examples/prometheus-kubernetes.yml

 # Example relabel to scrape only single, desired port for the pod
  # based on pod "example.io/scrape_port = <port>" annotation.
  # Note that __address__ is modified here, so if pod containers' ports
  # are declared, they all will be ignored.
  #  - source_labels: [__address__, __meta_kubernetes_pod_annotation_example_io_scrape_port]
  #    action: replace
  #    regex: ([^:]+)(?::\d+)?;(\d+)
  #    replacement: $1:$2
  #    target_label: __address__