# =============================================================================
# eBdesk SiCABE — Konfigurasi Prometheus (Fase 6: Observability)
# =============================================================================
# Mengapa Prometheus ini ada:
#   Dashboard Grafana punya panel bertipe metrik (mis. minio_bucket_usage_object_total).
#   Datasource Grafana bertipe `prometheus` HARUS menunjuk SERVER Prometheus — versi
#   sebelumnya menunjuk `http://minio:9000` (API S3 MinIO) sehingga selalu
#   "400 Bad Request: error querying the Prometheus API". Prometheus ini yang
#   meng-scrape metrik, lalu Grafana membacanya.
#
# Target yang tersedia di stack ini:
#   - prometheus   : self-scrape
#   - minio        : metrik publik (MINIO_PROMETHEUS_AUTH_TYPE=public di compose)
#   - starrocks-fe : FE mengekspos /metrics pada port HTTP 8030
#
# Sudah tersedia (M2/M3 observabilitas — lihat reviews/sicabe-19-observability-metrics-plan.md):
#   - airflow : Airflow 3 mengirim metrik lewat StatsD → statsd-exporter:9102 (job `airflow`)
#   - trino   : JMX coordinator (RMI :9080) → sidecar trino-jmx-exporter:9404 (job `trino`)
#   - node    : node_exporter di SETIAP host (:9100). node_exporter adalah PRA-SYARAT HOST
#               (di luar installer); daftar host dibaca dari `targets/node.yml` via file_sd
#               (digenerate dari cluster.yml bila ada — lihat lib/cluster/generate.py).
# =============================================================================
global:
  scrape_interval: 30s
  evaluation_interval: 30s

scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ["localhost:9090"]

  # MinIO memecah metrik per endpoint — satu job per metrics_path.
  #   /cluster : 197 metrik (server/cluster)
  #   /bucket  : 140 metrik — termasuk 'minio_bucket_usage_object_total' yang
  #              dipakai panel "Storage Usage" di dashboard Grafana. Metrik itu
  #              TIDAK ada di /cluster, sehingga tanpa job ini panel menampilkan
  #              "No data" walaupun target-nya 'up'.
  - job_name: minio
    metrics_path: /minio/v2/metrics/cluster
    scheme: http
    static_configs:
      - targets: ["minio:9000"]

  - job_name: minio-bucket
    metrics_path: /minio/v2/metrics/bucket
    scheme: http
    static_configs:
      - targets: ["minio:9000"]

  - job_name: starrocks-fe
    metrics_path: /metrics
    scheme: http
    static_configs:
      - targets: ["starrocks-fe:8030"]

  # Airflow → StatsD → statsd-exporter (M2 observabilitas).
  # Metrik Airflow (dagrun duration, task duration, scheduler heartbeat) muncul di
  # :9102 setelah AIRFLOW__METRICS__STATSD_ON diaktifkan pada service Airflow.
  - job_name: airflow
    metrics_path: /metrics
    scheme: http
    static_configs:
      - targets: ["statsd-exporter:9102"]

  # Trino → JMX (RMI :9080) → sidecar trino-jmx-exporter:9404 (M3 observabilitas).
  # Metrik saturasi coordinator (running/queued/failed query) + JVM.
  - job_name: trino
    metrics_path: /metrics
    scheme: http
    static_configs:
      - targets: ["trino-jmx-exporter:9404"]

  # node_exporter di setiap host (:9100) — PRA-SYARAT HOST (bukan service compose).
  # Daftar host dibaca dari file ini dan bisa diubah TANPA restart Prometheus
  # (file_sd memantau perubahan berkas; refresh_interval hanya cadangan).
  #
  #   - single-host : targets/node.yml default = "host.docker.internal:9100"
  #   - multi-host  : digenerate dari cluster.yml oleh `./install.sh --generate`
  #                   (semua host, alamat:9100, label host=<nama>)
  #
  # Label `host` dari berkas target dipromosikan ke semua seri; relabel di bawah
  # menyalinnya ke `instance` supaya panel menampilkan NAMA host, bukan alamat.
  - job_name: node
    metrics_path: /metrics
    scheme: http
    file_sd_configs:
      - files: ["/etc/prometheus/targets/node.yml"]
        refresh_interval: 30s
    relabel_configs:
      - source_labels: [host]
        target_label: instance