server-initializer/templates/monitoring/docker-compose.yml

services:
  # PORT 9090 (internal only)
  prometheus:
    image: prom/prometheus:v3.4.2
    container_name: prometheus
    restart: always
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
      - prometheus_data:/prometheus
    networks:
      - monitoring_net
      - caddy_net
    # No ports exposed - access via Caddy only
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--storage.tsdb.retention.time=30d'
      - '--web.console.libraries=/etc/prometheus/console_libraries'
      - '--web.console.templates=/etc/prometheus/consoles'
      - '--web.enable-lifecycle'

  # PORT 9100
  node_exporter:
    image: prom/node-exporter:v1.9.1
    container_name: node-exporter
    restart: always
    pid: host
    volumes:
      - /proc:/host/proc:ro
      - /sys:/host/sys:ro
      - /:/rootfs:ro
    command:
      - '--path.procfs=/host/proc'
      - '--path.rootfs=/rootfs'
      - '--path.sysfs=/host/sys'
      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
    networks:
      - monitoring_net

  # PORT 8080
  cadvisor:
    image: gcr.io/cadvisor/cadvisor:v0.52.1
    container_name: cadvisor
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
      - /dev/disk/:/dev/disk:ro
    restart: unless-stopped
    networks:
      - monitoring_net
    command:
      - '--housekeeping_interval=10s'
      - '--docker_only=true'

  # PORT 3100
  loki:
    image: grafana/loki:3.4.0
    container_name: loki
    volumes:
      - ./loki/loki.yml:/etc/loki/local-config.yaml
      - loki_data:/loki
    restart: unless-stopped
    networks:
      - monitoring_net
    command: -config.file=/etc/loki/local-config.yaml

  # PORT 9080
  promtail:
    image: grafana/promtail:3.4.0
    container_name: promtail
    volumes:
      - ./promtail/promtail.yml:/etc/promtail/config.yml
      - ../caddy/logs:/var/log/caddy:ro
      - /var/log:/var/log:ro
    restart: unless-stopped
    networks:
      - monitoring_net
    command: -config.file=/etc/promtail/config.yml

volumes:
  prometheus_data:
  loki_data:

networks:
  monitoring_net:
    external: true
  caddy_net:
    external: true