Prometheus와 Grafana로 모니터링 대시보드 만들기

Prometheus + Grafana 기본 구축:

# docker-compose.yml
services:
  prometheus:
    image: prom/prometheus
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    ports:
      - "9090:9090"

  grafana:
    image: grafana/grafana
    ports:
      - "3000:3000"

  node-exporter:
    image: prom/node-exporter
    ports:
      - "9100:9100"

# prometheus.yml
scrape_configs:
  - job_name: "node"
    static_configs:
      - targets: ["node-exporter:9100"]

설정 순서:

1. docker compose up -d
2. Grafana (localhost:3000) 접속 (admin/admin)
3. Data Source → Prometheus (http://prometheus:9090) 추가
4. Dashboard → Import → ID 1860 (Node Exporter Full)

5분이면 서버 모니터링 대시보드가 완성됩니다.