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我在使用 Docker 时遇到了一些问题。我的问题是在使用 docker-compose 和这个库 https://github.com/jwilder/nginx-proxy时理解反向代理

所以我有 1 个像这样的 Dockerfile：

FROM alpine:latest
COPY requirements.txt /tmp/requirements.txt

RUN apk add --no-cache \
    g++ \
    gcc \
    freetds \
    ca-certificates \
    build-base \
    libc-dev \
    python3 \
    python3-dev \
    unixodbc-dev \
    bash \
    nginx \
    uwsgi \
    uwsgi-python3 \
    supervisor && \
    python3 -m ensurepip && \
    rm -r /usr/lib/python*/ensurepip && \
    pip3 install --no-cache-dir --upgrade --force-reinstall pip setuptools && \
    pip3 install -r /tmp/requirements.txt && \
    rm /etc/nginx/conf.d/default.conf && \
    rm -r /root/.cache

# Copy ODBC Driver
COPY odbc.ini /etc/
COPY odbcinst.ini /etc/

# Copy the Nginx global conf
COPY nginx.conf /etc/nginx/
# Copy the Flask Nginx site conf
COPY flask-site-nginx.conf /etc/nginx/conf.d/
# Copy the base uWSGI ini file to enable default dynamic uwsgi process number
COPY uwsgi.ini /etc/uwsgi/
# Custom Supervisord config
COPY supervisord.conf /etc/supervisord.conf

# Add demo app
COPY ./app /app
# EXPOSE 80

WORKDIR /app

CMD ["/usr/bin/supervisord"]

当我跑步时

docker build -t name/name . #success
docker run -d --name=container_name -p 80 name/name:latest #success

我跑了

curl -i localhost/page #success

------------ 我的问题是在分配的端口中使用 nginx-proxy ------------------ 时的理解

1 创建 docker 网络名称 reverse-proxy 并运行 jwilder/nginx-proxy

docker network create --driver bridge reverse-proxy
docker run -d -p 81:80 -p 444:443 \
    --name reverse-proxy \
    --net=reverse-proxy \
    -v /var/run/docker.sock:/tmp/docker.sock:ro \
    jwilder/nginx-proxy

这是我的 docker-compose.yml

version: "3"

services:
  atk-request:
    build: ./_atkrequest                 #path which Dockerfile is exists
    container_name: api-atkrequest        
    restart: always
    networks: 
      - reverse-proxy
    # ports:
    #   - 80:80                            #host:container
    expose:
      - 80
    environment:
      - VIRTUAL_HOST=atkrequest.api.dev  #nginx-proxy host
      - VIRTUAL_PORT=80                  #nginx-proxy port

networks: 
  reverse-proxy:
    external: 
      name: reverse-proxy

然后运行

docker-compose up -d #success without error

并输出 docker ps

CONTAINER ID        IMAGE                    COMMAND                  CREATED              STATUS              PORTS                                      NAMES
ca95a0f42de2        atkrequest_atk-request   "/usr/bin/supervisord"   5 seconds ago        Up 3 seconds        80/tcp                                     api-atkrequest
c42a9f9d85b5        jwilder/nginx-proxy      "/app/docker-entrypoâ¦"   About a minute ago   Up About a minute   0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp   reverse-proxy

并且当使用 curl 错误代码 503 Service Temporary UnAvailable 调用 url

curl -i localhost
HTTP/1.1 503 Service Temporarily Unavailable
Server: nginx/1.14.0
Date: Wed, 10 Oct 2018 07:39:09 GMT
Content-Type: text/html
Content-Length: 213
Connection: keep-alive

<html>
<head><title>503 Service Temporarily Unavailable</title></head>
<body bgcolor="white">
<center><h1>503 Service Temporarily Unavailable</h1></center>
<hr><center>nginx/1.14.0</center>
</body>
</html>

然后我被困在这里......

谢谢我

4

1 回答 1

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jwilder/nginx-proxy生成一个 Nginx ，其中包含已定义default.conf的每个容器的条目。VIRTUAL_HOST

由于您已VIRTUAL_HOST=atkrequest.api.dev在其中一个容器上进行了定义，因此生成的default.conf内容将类似于

# atkrequest.api.dev
upstream atkrequest.api.dev {
    ## Can be connected with "{{dir_name}}_default" network
    # {{dir_name}}_atk-request
    server {{atk-request container ip}}:80;
}
server {
    server_name atkrequest.api.dev;
    listen 80 ;
    access_log /var/log/nginx/access.log vhost;
    location / {
        proxy_pass http://atkrequest.api.dev;
    }
}

但是没有任何配置，localhost因为您没有VIRTUAL_HOST=localhost定义任何容器。因此，当您的请求到达时nginx-proxy- 它会响应，503因为它没有任何配置localhost。

如果您想保留nginx-proxy并能够访问atk-request容器localhost- 将其环境变量更改为VIRTUAL_HOST=localhost. （矫枉过正的技术，因为你可以简单地暴露端口80:80而不是使用nginx-proxy，但我把它包括在内是为了解释）

如果您想atk-request使用 - 访问容器，atkrequest.api.dev只需添加127.0.0.1 atkrequest.api.dev到您的/etc/hosts.

于 2019-03-27T23:41:22.837 回答