services:
  postgres:
    image: postgres:17-alpine
    secrets:
    - postgres-master
    networks:
    - homelab
    environment:
    - POSTGRES_USER=admin
    - POSTGRES_PASSWORD_FILE=/run/secrets/postgres-master
    - PGDATA=/var/lib/postgresql/data
    volumes:
    - /mnt/swarm-data/postgres:/var/lib/postgresql/data
    ports:
    - 5432:5432
    deploy:
      replicas: 3
      placement:
        constraints:
        - node.hostname == p0

networks:
  homelab:
    external: true
secrets:
  postgres-master:
    external: true