# Optional third overlay after docker-compose.yml and docker-compose.monitoring.yml.
# The operator supplies a private, container-readable Alertmanager configuration.
services:
  prometheus:
    volumes:
      - ./infra/monitoring/prometheus-alerting.yml:/etc/prometheus/prometheus.yml:ro
    networks:
      - novel-net
      - alerting-net
    depends_on:
      alertmanager:
        condition: service_healthy

  alertmanager:
    image: prom/alertmanager:v0.34.1@sha256:e9733bafb1bdef9b00e25a21f8f99dc26a22224bf16641ad754d1649f4c3357a
    container_name: ${CONTAINER_PREFIX:-novel}-alertmanager
    command:
      - --config.file=/etc/alertmanager/alertmanager.yml
      - --storage.path=/alertmanager
      - --cluster.listen-address=
      - --log.format=json
    volumes:
      - type: bind
        source: ${ALERTMANAGER_CONFIG_FILE:?Set ALERTMANAGER_CONFIG_FILE to a private Alertmanager configuration file}
        target: /etc/alertmanager/alertmanager.yml
        read_only: true
        bind:
          create_host_path: false
      - alertmanager_data:/alertmanager
    networks:
      - alerting-net
    cap_drop: [ALL]
    security_opt: [no-new-privileges:true]
    restart: unless-stopped
    logging:
      driver: local
    healthcheck:
      test: [CMD, wget, -q, --spider, http://127.0.0.1:9093/-/ready]
      interval: 5s
      timeout: 3s
      retries: 10

volumes:
  alertmanager_data:

networks:
  alerting-net:
    driver: bridge