SyncDoc/docker-compose.dev-lb.yml at main · Khulon/SyncDoc · GitHub

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# SyncDoc — Local load balancer + monitoring stack
#
# Matches your tweaked setup (port 8080, sslmode=disable) plus adds
# Prometheus and Grafana for live metrics.
#
# Usage:
#   docker-compose -f docker-compose.dev-lb.yml up --build
#
# Access:
#   App:        http://localhost:8080
#   Prometheus: http://localhost:9090
#   Grafana:    http://localhost:3000  (login: admin / admin)
#   Metrics:    http://localhost:8080/metrics  (via nginx → app round-robin)

version: '3.8'

# Shared env — matches your working tweaked version
x-app-env: &app-env
  NODE_ENV: production
  PORT: 3001
  DATABASE_URL: postgresql://syncdoc:syncdoc@postgres:5432/syncdoc?sslmode=disable
  REDIS_URL: redis://redis:6379
  CLIENT_ORIGIN: http://localhost:8080

services:
  # ── Nginx load balancer ──────────────────────────────────────────────────────
  nginx:
    image: nginx:1.25-alpine
    ports:
      - "8080:80"
    volumes:
      - ./nginx/nginx.dev.conf:/etc/nginx/nginx.conf:ro
    depends_on:
      - app1
      - app2
    networks:
      - internal

  # ── App container 1 ─────────────────────────────────────────────────────────
  # No external port needed — Prometheus is on the same Docker network
  # and can reach app1:3001 directly by container hostname.
  app1:
    build: .
    container_name: syncdoc_app1
    environment:
      <<: *app-env
      SERVER_ID: app1
    ports:
      - "3001:3001"   # direct access for cross-server load test
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - internal

  # ── App container 2 ─────────────────────────────────────────────────────────
  app2:
    build: .
    container_name: syncdoc_app2
    environment:
      <<: *app-env
      SERVER_ID: app2
    ports:
      - "3002:3001"   # direct access for cross-server load test
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    networks:
      - internal

  # ── PostgreSQL ───────────────────────────────────────────────────────────────
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_DB: syncdoc
      POSTGRES_USER: syncdoc
      POSTGRES_PASSWORD: syncdoc
    volumes:
      - postgres_dev_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U syncdoc"]
      interval: 5s
      timeout: 5s
      retries: 10
    networks:
      - internal

  # ── Redis ─────────────────────────────────────────────────────────────────────
  redis:
    image: redis:7-alpine
    command: redis-server --appendonly yes
    volumes:
      - redis_dev_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 3s
      retries: 5
    networks:
      - internal

  # ── Prometheus ───────────────────────────────────────────────────────────────
  # On the same internal network — can reach app1:3001 and app2:3001 directly.
  prometheus:
    image: prom/prometheus:latest
    container_name: syncdoc_prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./monitoring/prometheus.dev.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus_dev_data:/prometheus
    command:
      - '--config.file=/etc/prometheus/prometheus.yml'
      - '--storage.tsdb.path=/prometheus'
      - '--web.enable-lifecycle'
      - '--storage.tsdb.retention.time=7d'
    networks:
      - internal

  # ── Grafana ──────────────────────────────────────────────────────────────────
  # Auto-provisions Prometheus as a datasource and loads the SyncDoc dashboard.
  grafana:
    image: grafana/grafana:latest
    container_name: syncdoc_grafana
    ports:
      - "3000:3000"
    environment:
      GF_SECURITY_ADMIN_PASSWORD: admin
      GF_USERS_ALLOW_SIGN_UP: "false"
      GF_DASHBOARDS_DEFAULT_HOME_DASHBOARD_PATH: /etc/grafana/provisioning/dashboards/syncdoc.json
    volumes:
      - grafana_dev_data:/var/lib/grafana
      - ./monitoring/grafana/provisioning:/etc/grafana/provisioning:ro
    depends_on:
      - prometheus
    networks:
      - internal

volumes:
  postgres_dev_data:
  redis_dev_data:
  prometheus_dev_data:
  grafana_dev_data:

networks:
  internal:
    driver: bridge