# Prometheus configuration for the Blueforce fleet.
# Scrape interval 60s keeps cardinality/storage tractable at 700 nodes.
# Fleet targets scale via file-based service discovery: add/remove entries
# in targets/fleet.json without reloading Prometheus (refresh_interval 30s).

global:
  scrape_interval: 60s
  scrape_timeout: 10s
  evaluation_interval: 60s
  external_labels:
    fleet: blueforce

rule_files:
  - alerts.yml

scrape_configs:
  # Prometheus self-monitoring.
  - job_name: prometheus
    static_configs:
      - targets: ["localhost:9090"]

  # Field devices: Node Exporter (:9100) + textfile collector metrics.
  # Identity label contract: device_id="BF-<no>" on every target.
  - job_name: node
    file_sd_configs:
      - files: ["/etc/prometheus/targets/*.json"]
        refresh_interval: 30s
    relabel_configs:
      - source_labels: [__address__]
        target_label: __address__
        regex: (.+)
        replacement: ${1}:9100
      - source_labels: [device_id]
        target_label: device_id
        regex: (.+)
        replacement: ${1}
    metric_relabel_configs:
      # Enforce the device_id label contract; drop series without it.
      - source_labels: [device_id]
        regex: .+
        action: keep