docker - 容器在docker-compose中无法在网络中通信

Question

我有一个docker-compose网络问题。因此，我使用ubuntu，tensorflow和Rstudio容器创建了共享空间，这在共享它们与主机之间的容量方面做得很好，但是当归结为使用彼此终端内部的一个容器的资源时一，我撞墙了。我只能在没有它的容器的终端中调用python。我的docker-compose.yaml:

# docker-compose.yml

version: '3'
services:

#ubuntu(16.04)
 ubuntu:
   image: ubuntu_base
   build:
     context: .
     dockerfile: dockerfileBase 
   volumes:
     - "/data/data_vol/:/data/data_vol/:Z"
   networks:
     - default
   ports:
     - "8081:8081"
   tty: true

#tensorflow
 tensorflow:
   image: tensorflow_jupyter
   build:
     context: .
     dockerfile: dockerfileTensorflow
   volumes:
     - "/data/data_vol/:/data/data_vol/:Z"
     - .:/notebooks
   networks:
     - default
   ports:
     - "8888:8888"
   tty: true

#rstudio
 rstudio:
   image: rstudio1
   build:
     context: .
     dockerfile: dockerfileRstudio1
   volumes:
     - "/data/data_vol/:/data/data_vol/:Z"
   networks:
     - default
   environment:
     - PASSWORD=test
   ports:
     - "8787:8787"
   tty: true


volumes:
  ubuntu:
  tensorflow:
  rstudio:

networks:
  default: 
    driver: bridge

我是一个 docker 新手，所以我不确定我的网络设置。就是说 docker inspect composetest_default(为compose创建的默认网络)表明容器已连接到网络。据我了解，在这种情况下，我应该能够在其他每个容器中自由调用一项服务，反之亦然:

"Containers": {
            "83065ec7c84de22a1f91242b42d41b293e622528d4ef6819132325fde1d37164": {
                "Name": "composetest_ubuntu_1",
                "EndpointID": "0dbf6b889eb9f818cfafbe6523f020c862b2040b0162ffbcaebfbdc9395d1aa2",
                "MacAddress": "02:42:c0:a8:40:04",
                "IPv4Address": "192.168.64.4/20",
                "IPv6Address": ""
            },
            "8a2e44a6d39abd246097cb9e5792a45ca25feee16c7c2e6a64fb1cee436631ff": {
                "Name": "composetest_rstudio_1",
                "EndpointID": "d7104ac8aaa089d4b679cc2a699ed7ab3592f4f549041fd35e5d2efe0a5d256a",
                "MacAddress": "02:42:c0:a8:40:03",
                "IPv4Address": "192.168.64.3/20",
                "IPv6Address": ""
            },
            "ea51749aedb1ec28f5ba56139c5e948af90213d914630780a3a2d2ed8ec9c732": {
                "Name": "composetest_tensorflow_1",
                "EndpointID": "248e7b2f163cff2c1388c1c69196bea93369434d91cdedd67933c970ff160022",
                "MacAddress": "02:42:c0:a8:40:02",
                "IPv4Address": "192.168.64.2/20",
                "IPv6Address": ""
            }

史前史-我曾在docker-compose中尝试过 links:，但由于某些弃用警告而决定更改为 networks:。这是正确的做法吗？

Docker版本18.09.1

Docker-compose版本1.17.1

Answer 1

but when it comes down to using the resources of the one container inside the terminal of each other one, I hit a wall. I can't do as little as calling python in the terminal of the container that doesn't have it.

您不能使用Linux程序从另一个容器的容器的bin路径中访问，但是可以使用旨在通过网络从docker撰写文件中的任何容器通过网络进行通信的任何服务。

箱路径:

$ echo $PATH                                                                                                                                                                                              127 ↵
/home/exadra37/bin:/home/exadra37/bin:/home/exadra37/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

因此，此路径中未设计为通过网络进行通信的程序无法从其他容器中使用，并且需要安装在所需的每个容器中，例如 python。