docker-compose与NGINX不服务Django在本地主机

Question

我正在尝试使用Docker Compose在NGINX上提供一个简单的Django应用程序。我不太确定问题来自哪里，但构建是成功的。知道为什么不能正常上菜吗?

设置如下:

├── app
│   ├── templates
│   ├── webapp
│   │   ├── asgi.py
│   │   ├── settings.py
│   │   ├── urls.py
│   │   └── wsgi.py
│   ├── Dockerfile
│   ├── Dockerfile.prod
│   ├── entrypoint.sh
│   ├── entrypoint.prod.sh
│   └── requirements.txt
├── nginx
│   ├── Dockerfile
│   └── nginx.conf
├── .env
├── docker-compose.ci.yml
├── docker-compose.prod.yml
└── docker-compose.yml

应用程序/webapp/settings.py:

from pathlib import Path
import os
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

SECRET_KEY = os.environ.get('SECRET_KEY')
DEBUG = int(os.environ.get('DEBUG', default=0))
ALLOWED_HOSTS = ['localhost', '127.0.0.1']

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'webapp.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': ['templates'],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'webapp.wsgi.application'

DATABASES = {
'default': {
'ENGINE': os.environ.get('SQL_ENGINE', 'django.db.backends.sqlite3'),
'NAME': os.environ.get('SQL_DATABASE', os.path.join(BASE_DIR, 'db.sqlite3')),
'USER': os.environ.get('SQL_USER', 'user'),
'PASSWORD': os.environ.get('SQL_PASSWORD', 'password'),
'HOST': os.environ.get('SQL_HOST', 'localhost'),
'PORT': os.environ.get('SQL_PORT', '5432'),
}
}

AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]

# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/
STATIC_URL = '/staticfiles/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
MEDIA_URL = '/mediafiles/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'mediafiles')
# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

YOUTUBE_DATA_API_KEY = os.environ.get('YOUTUBE_DATA_API_KEY')

.env

DEBUG=0
SECRET_KEY=<foo>
SQL_ENGINE=django.db.backends.postgresql
SQL_DATABASE=webapp_django_prod
SQL_USER=webapp_django
SQL_PASSWORD=<password>
SQL_HOST=db
SQL_PORT=5432
DATABASE=postgres
YOUTUBE_DATA_API_KEY=<foo>

app/Dockerfile

# pull official base image
FROM python:3.9.6-alpine
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2
RUN apk update 
&& apk add --virtual build-deps gcc python3-dev musl-dev 
&& apk add postgresql-dev 
&& pip install psycopg2 
&& apk del build-deps
# install dependencies
RUN pip install --upgrade pip
COPY ./requirements.txt /usr/src/app/requirements.txt
RUN pip install -r /usr/src/app/requirements.txt
# copy entrypoint.sh
COPY ./entrypoint.sh /usr/src/app/entrypoint.sh
# copy project
COPY . /usr/src/app/
# run entrypoint.sh
ENTRYPOINT ["/usr/src/app/entrypoint.sh"]

app/entrypoint.sh

#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
fi
python manage.py flush --no-input
python manage.py migrate
python manage.py collectstatic --no-input --clear
exec "$@"

app/Dockerfile.prod

# pull official base image
FROM python:3.9.6-alpine
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2
RUN apk update 
&& apk add --virtual build-deps gcc python3-dev musl-dev 
&& apk add postgresql-dev 
&& pip install psycopg2 
&& apk del build-deps
# install dependencies
RUN pip install --upgrade pip
COPY ./requirements.txt /usr/src/app/requirements.txt
RUN pip install -r /usr/src/app/requirements.txt
# copy entrypoint-prod.sh
COPY ./entrypoint.prod.sh /usr/src/app/entrypoint.prod.sh
# copy project
COPY . /usr/src/app/
# run entrypoint.prod.sh
ENTRYPOINT ["/usr/src/app/entrypoint.prod.sh"]

app/entrypoint.prod.sh

#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
fi
exec "$@"

nginx/Dockerfile

FROM nginx:1.21-alpine
RUN rm /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx/conf.d

nginx/nginx.conf

upstream webapp {
server web:8000;
}
server {
listen 80;
location / {
proxy_pass http://webapp;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_redirect off;
}
location /staticfiles/ {
alias /usr/src/app/staticfiles/;
}
location /mediafiles/ {
alias /usr/src/app/mediafiles/;
}
}

docker-compose.yml

version: '3.8'
services:
web:
build: ./app
command: python manage.py runserver 0.0.0.0:8000
volumes:
- ./app/:/usr/src/app/
ports:
- 8000:8000
environment:
- DEBUG=1
- SECRET_KEY=<foo>
- SQL_ENGINE=django.db.backends.postgresql
- SQL_DATABASE=webapp_django_prod
- SQL_USER=webapp_django
- SQL_PASSWORD=<foo>
- SQL_HOST=db
- SQL_PORT=5432
- DATABASE=postgres
depends_on:
- db
db:
image: postgres:13-alpine
volumes:
- postgres_data:/var/lib/postgresql/data/
environment:
- POSTGRES_USER=webapp_django
- POSTGRES_PASSWORD=<foo>
- POSTGRES_DB=webapp_django_prod
volumes:
postgres_data:

docker-compose.ci.yml

version: '3.8'
services:
web:
build:
context: ./app
dockerfile: Dockerfile.prod
cache_from:
- "${WEB_IMAGE}"
image: "${WEB_IMAGE}"
command: gunicorn webapp.wsgi:application --bind 0.0.0.0:8000
volumes:
- static_volume:/usr/src/app/staticfiles
- media_volume:/usr/src/app/mediafiles
expose:
- 8000
env_file: .env
nginx:
build:
context: ./nginx
cache_from:
- "${NGINX_IMAGE}"
image: "${NGINX_IMAGE}"
volumes:
- static_volume:/usr/src/app/staticfiles
- media_volume:/usr/src/app/mediafiles
ports:
- 80:80
depends_on:
- web
volumes:
static_volume:
media_volume:

docker-compose.prod.yml

version: '3.8'
services:
web:
image: "${WEB_IMAGE}"
command: gunicorn webapp.wsgi:application --bind 0.0.0.0:8000
volumes:
- static_volume:/usr/src/app/staticfiles
- media_volume:/usr/src/app/mediafiles
ports:
- 8000:8000
env_file: .env
nginx:
image: "${NGINX_IMAGE}"
volumes:
- static_volume:/usr/src/app/staticfiles
- media_volume:/usr/src/app/mediafiles
ports:
- 80:80
depends_on:
- web
volumes:
static_volume:
media_volume:

Answer 1

因为我还不能评论。识别问题的最简单方法是查看日志。

您可以通过在每个实例上运行此命令来检查Docker容器:

docker logs --follow your-container-name

或者您可以将此添加到您的docker-compose文件中，如果docker容器被杀死，您可以使用journalctl:访问它

mycontainer:
image: myimage
logging:
driver: journald
options:
tag: mytag

然后使用:

journalctl -u docker CONTAINER_NAME=mycontainer_name
journalctl -u docker CONTAINER_TAG=mytag

答案部分摘自:https://stackoverflow.com/a/43663253/16891224