ruby-on-rails – Docker rails mongodb NoServerAvailable

>带Rails的API
>网站角度/网络包
>带有mongodb的DB

所以我有一个docker-compose来处理一切.

我的问题是当我想要种子数据库时,我有一个错误：

Mongo::Error::NoServerAvailable: No server is available matching  preference: #<Mongo::ServerSelector::Primary:0x47121755943460 tag_sets=[] server_selection_timeout=30 local_threshold=0.015>

我尝试了很多东西,我目前正在使用OSX上的Docker原生测试版.

version: '2'
services:
    web:
        build: web/
        ports:
            - "80:8080"
        links:
            - api
        depends_on:
            - api
        volumes:
            - ./web:/app
    api:
        build: api/
        command: rails s -p 3000 -b '0.0.0.0'
        volumes:
            - ./api:/app
            - ./api:/app/tmp/pids
        links:
            - db
        #depends_on:
            #- db
        ports:
            - "3000:3000"
        environment:
            RAILS_ENV: development
    db:
        image: mongo:3.2
        ports:
            - 27017:27017

我的种子.rb

require 'csv'

file = File.read("db/data.csv")
csv = CSV.parse(file,:headers => false,:col_sep => ";")

csv.each do |row|
    Datum.create(
        :country_code   => row[0],:country        => row[1]
    )
end

而我的mongoid.yml这是正常的我使用localhost因为测试版本,它在localhost上.当我尝试使用docker-machine时,我将其更改为docker ip.

development:
  clients:
    default:
      database: api_development
      hosts:
        - localhost:27017
      options:
  options:
test:
  clients:
    default:
      database: api_test
      hosts:
        - localhost:27017
      options:
        read:
          mode: :primary
        max_pool_size: 1

一旦我的docker-compose up -d我尝试用docker-compose运行api rake db：seed

所有容器都在运行,我可以从导航器访问它而没有问题.

当我卸载docker native并使用boot2docker时,它正在工作.

有没有人知道问题出在哪里？