replicas

如果服务是replicated模式(默认是replicated模式), 该属性可以用来指定在任意时间应该运行的容器副本数量。

version: "3.9"
services:
  worker:
    image: dockersamples/examplevotingapp_worker
    networks:
      - frontend
      - backend
    deploy:
      mode: replicated
      replicas: 6
      placement:
        max_replicas_per_node: 1