version: "3.8"

# Enhanced CDC monitoring stack with Alertmanager for external alert routing
# This extends docker-compose-observability.yml with Alertmanager integration
#
# Usage:
#   docker-compose -f docker-compose-observability.yml -f docker-compose.alerts.yml up -d
#
# Services added:
#   - Alertmanager for alert routing and deduplication
#
# Access:
#   - Alertmanager UI: http://localhost:9093

services:
  # Override Prometheus to enable Alertmanager integration
  prometheus:
    volumes:
      - ./prometheus-with-alertmanager.yml:/etc/prometheus/prometheus.yml:ro
      - ./prometheus-alerts.yml:/etc/prometheus/alerts.yml:ro
      - prometheus-data:/prometheus
    command:
      - "--config.file=/etc/prometheus/prometheus.yml"
      - "--storage.tsdb.path=/prometheus"
      - "--web.console.libraries=/usr/share/prometheus/console_libraries"
      - "--web.console.templates=/usr/share/prometheus/consoles"
      - "--web.enable-lifecycle"

  # Alertmanager for routing alerts to external systems
  alertmanager:
    image: prom/alertmanager:v0.26.0
    container_name: cdc-alertmanager
    ports:
      - "9093:9093"
    volumes:
      - ./alertmanager.yml:/etc/alertmanager/alertmanager.yml:ro
      - alertmanager-data:/alertmanager
    command:
      - "--config.file=/etc/alertmanager/alertmanager.yml"
      - "--storage.path=/alertmanager"
      - "--web.external-url=http://localhost:9093"
      - "--cluster.advertise-address=0.0.0.0:9093"
    networks:
      - cdc-network
    restart: unless-stopped

volumes:
  alertmanager-data:
    driver: local