version: "3.3"

networks:
  net:
    driver: overlay
    attachable: true
  mon_net:
    external: true

services:

  mongo:
    image: healthcheck/mongo:latest
    networks:
      - net
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.role != manager

  mongo-exporter:
    image: forekshub/percona-mongodb-exporter:latest
    networks:
      - net
      - mon_net
    ports:
      - "9216:9216"
    environment:
      - MONGODB_URL=mongodb://mongo:27017
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.role == manager