# Prometheus config — deployed to rn-platform-01 (runs alongside the app stack; see
# infra/ansible/roles/monitoring-agent/). Scrapes both hosts remotely — node-exporter/
# postgres-exporter here on rn-platform-01 (same-host, local network), node-exporter/cadvisor
# on rn-lab-host-01 over the network (allowed by the firewall rule added for exactly this,
# infra/firewall/rn-lab-host-01.rules).
#
# Deliberately does NOT scrape or duplicate the application's own instructor learning
# analytics (docs/PHASE3B_LEARNING_AND_ASSESSMENT.md §12) — operational observability
# (uptime/CPU/errors) and learning analytics (completion rates/hint usage) are separate
# concerns with separate audiences, per the explicit Phase 4 instruction.

global:
  scrape_interval: 15s
  evaluation_interval: 15s

alerting:
  alertmanagers:
    - static_configs:
        - targets: ["localhost:9093"]

rule_files:
  - /etc/prometheus/rules/*.yml

scrape_configs:
  - job_name: platform-node
    static_configs:
      - targets: ["localhost:9100"]
        labels: { host: rn-platform-01 }

  - job_name: platform-postgres
    static_configs:
      - targets: ["postgres-exporter:9187"]
        labels: { host: rn-platform-01 }

  - job_name: lab-host-node
    static_configs:
      - targets: ["{{ lab_host_ip }}:9100"]
        labels: { host: rn-lab-host-01 }

  - job_name: lab-host-cadvisor
    static_configs:
      - targets: ["{{ lab_host_ip }}:8080"]
        labels: { host: rn-lab-host-01 }

  # Uptime checks (Phase 4 §17) — blackbox_exporter probing the healthz endpoints added this
  # phase (Platform API, Gateway) plus the Provisioner's existing /health (Phase 1).
  - job_name: blackbox-gateway
    metrics_path: /probe
    params: { module: [http_2xx] }
    static_configs:
      - targets: ["https://{{ academy_domain }}/healthz"]
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: localhost:9115

  - job_name: blackbox-platform-api
    metrics_path: /probe
    params: { module: [http_2xx] }
    static_configs:
      - targets: ["http://api:4300/healthz"]
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: localhost:9115

  - job_name: blackbox-provisioner
    metrics_path: /probe
    params: { module: [http_2xx] }
    static_configs:
      - targets: ["http://provisioner:4100/health"]
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: localhost:9115

  # RootNode application metrics — see docs/OBSERVABILITY.md §"exposing /metrics" for the
  # documented, NOT-YET-BUILT follow-up (Platform API/Gateway/Provisioner don't currently
  # expose a Prometheus /metrics endpoint; this job is ready for when that lands, disabled
  # until then rather than scraping a 404 forever).
  # - job_name: rootnode-platform-api
  #   static_configs:
  #     - targets: ["api:4300"]
  #   metrics_path: /metrics