docker间通信-从一个docker到另一个docker的HTTP请求失败

如何解决docker间通信-从一个docker到另一个docker的HTTP请求失败

我有三个docker容器，它们都在同一个docker网络中运行。它们都部署在Linux Ubuntu服务器上。

1. Nginx是我的Web服务器/反向代理服务器
2. 由gunicorn提供服务的MyDjangoApp
3. tomcat提供的微服务

在Windows PC上，我可以成功访问所有Django端点。但是，其中之一失败了，并且尝试向微服务（从我的django应用程序）发出http get或http post的尝试失败了。我的http get请求（从docker 2到docker 3）看起来像这样：

if

在我的Windows PC上，我浏览到http://my_ip:9000/output_annotations/ ，但失败并出现以下错误：

http:my_ip:1337/microservice/output_annotations/

当我使用邮递员从requests.exceptions.ConnectionError: HTTPConnectionPool(host='standard_core_nlp',port=9000): Max retries exceeded with url: /output_annotations (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f5ae38e3940>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)) 获取http时，它成功了！

当我所有的docker都本地部署后，一切正常。

这是我与docker相关的文件：

docker-compose.yml

http://my_ip:9000/output_annotations

Dockerfile ：

version: "3"

services:
  web:
      build: 
          context: ../..
          dockerfile: docker/pb_django/Dockerfile
          args:
            HTTP_PROXY: http://my_proxy.com:9480
            HTTPS_PROXY: http://my_proxy:9480
      image: pb_django 
      container_name: pb_django
      expose:
        - "8000"
      networks:
        - ciee_network
  nginx:
      build: ./nginx
      ports:
        - "1337:80"
      depends_on:
        - web
      networks:
        - ciee_network
networks:
  ciee_network:
    external: true

nginx Dockerfile

    FROM python:3.6
    ENV PYTHONUNBUFFERED 1
    ENV PYTHONDONTWRITEBYTECODE 1
    ARG HTTP_PROXY
    ARG HTTPS_PROXY
    COPY ./requirements.txt /requirements.txt
    RUN pip install -r /requirements.txt
    RUN mkdir /code
    WORKDIR /code
    ADD . /code/
    RUN chmod -R 755 /code
    RUN useradd -m user
    RUN chmod 777 /home/user
    USER user
    CMD unset http_proxy
    CMD unset https_proxy
    CMD unset HTTP_PROXY
    CMD unset HTTPS_PROXY
    ENV HTTP_PROXY=
    ENV HTTPS_PROXY=
    CMD ["gunicorn","PB_Django.wsgi:application","--config","docker/pb_django/gunicorn.conf","--keep-alive","600"]

nginx.conf

FROM nginx:alpine
RUN rm -f /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx/conf.d/default.conf

最后是我的微服务的docker-compose.yml

upstream pb_django {
    server web:8000 fail_timeout=0;
}

server {
    listen 80;

    location / {
        proxy_pass http://pb_django/;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
        proxy_read_timeout 10m;
        proxy_connect_timeout 10m;
        client_max_body_size 700m;
    }
}

用于微服务的Dockerfile.ca

version: "3"

services:
  web:
      build: 
          context:  ..
          dockerfile: ./docker/Dockerfile.ca
      image: microservice  
      container_name: microservice
      ports:
        - "9000:9000"

任何想法或建议将不胜感激！