为什么 gunicorn 会挂在这个配置中？

Question

我正在使用 Docker 构建一个多容器应用程序。一切都适用于 Django (1.7) 开发服务器。但是当我尝试运行 gunicorn 命令 gunicorn wsgi:application 似乎开始时，然后不提供任何输出并保持对终端的控制，直到我按下 Ctrl-C。遗憾的是，这意味着我几乎没有有用的调试信息。

我的API的Docker文件是这样的：

FROM ubuntu:14.04
MAINTAINER Garry Cairns
ENV REFRESHED_AT 2015-01-13

# update packages and prepare to build software
RUN ["apt-get", "update"]
RUN ["apt-get", "-y", "install", "build-essential", "vim", "git", "curl"]
RUN ["locale-gen", "en_GB.UTF-8"]

# install latest python
RUN ["apt-get", "-y", "build-dep", "python3-dev", "python3-imaging"]
RUN ["apt-get", "-y", "install", "python3-dev", "python3-imaging", "python3-pip"]

# prepare postgreSQL support
RUN ["apt-get", "-y", "build-dep", "python3-psycopg2"]

# create a python user to run our programs
RUN ["groupadd", "-r", "python"]
RUN ["useradd", "-r", "-g", "python", "python"]
WORKDIR /home/python
ADD ./ /home/python

# manage requirements
ENV REQUIREMENTS_REFRESHED_AT 2015-02-09
RUN ["pip3", "install", "-r", "requirements.txt"]

我的生产设置（大致上是 cookiecutter django 默认值）目前是这样的：

# -*- coding: utf-8 -*-
'''
Production Configurations

- Use djangosecure
- Use Amazon's S3 for storing static files and uploaded media
- Use sendgrid to send emails
- Use MEMCACHIER on Heroku
'''
from configurations import values

# See: http://django-storages.readthedocs.org/en/latest/backends/amazon-S3.html#settings
try:
    from S3 import CallingFormat
    AWS_CALLING_FORMAT = CallingFormat.SUBDOMAIN
except ImportError:
    # TODO: Fix this where even if in Dev this class is called.
    pass

from .common import Common


class Production(Common):

    # INSTALLED_APPS
    INSTALLED_APPS = Common.INSTALLED_APPS
    # END INSTALLED_APPS

    # SECRET KEY
    SECRET_KEY = "Change me" # values.SecretValue()
    # END SECRET KEY

    # django-secure
    INSTALLED_APPS += ("djangosecure", )

    # set this to 60 seconds and then to 518400 when you can prove it works
    SECURE_HSTS_SECONDS = 60
    SECURE_HSTS_INCLUDE_SUBDOMAINS = values.BooleanValue(True)
    SECURE_FRAME_DENY = values.BooleanValue(True)
    SECURE_CONTENT_TYPE_NOSNIFF = values.BooleanValue(True)
    SECURE_BROWSER_XSS_FILTER = values.BooleanValue(True)
    SESSION_COOKIE_SECURE = values.BooleanValue(False)
    SESSION_COOKIE_HTTPONLY = values.BooleanValue(True)
    SECURE_SSL_REDIRECT = values.BooleanValue(True)
    # end django-secure

    # SITE CONFIGURATION
    # Hosts/domain names that are valid for this site
    # See https://docs.djangoproject.com/en/1.6/ref/settings/#allowed-hosts
    ALLOWED_HOSTS = ["*"]
    # END SITE CONFIGURATION

    INSTALLED_APPS += ("gunicorn", )

    # STORAGE CONFIGURATION
    # See: http://django-storages.readthedocs.org/en/latest/index.html
    INSTALLED_APPS += (
        'storages',
    )

    # See: http://django-storages.readthedocs.org/en/latest/backends/amazon-S3.html#settings
    STATICFILES_STORAGE = DEFAULT_FILE_STORAGE = 'storages.backends.s3boto.S3BotoStorage'

    # See: http://django-storages.readthedocs.org/en/latest/backends/amazon-S3.html#settings
    AWS_ACCESS_KEY_ID = "test" # values.SecretValue()
    AWS_SECRET_ACCESS_KEY = "test" # values.SecretValue()
    AWS_STORAGE_BUCKET_NAME = "test" # values.SecretValue()
    AWS_AUTO_CREATE_BUCKET = True
    AWS_QUERYSTRING_AUTH = False

    # AWS cache settings, don't change unless you know what you're doing:
    AWS_EXPIRY = 60 * 60 * 24 * 7
    AWS_HEADERS = {
        'Cache-Control': 'max-age=%d, s-maxage=%d, must-revalidate' % (
            AWS_EXPIRY, AWS_EXPIRY)
    }

    # See: https://docs.djangoproject.com/en/dev/ref/settings/#static-url
    STATIC_URL = 'https://s3.amazonaws.com/%s/' % AWS_STORAGE_BUCKET_NAME
    # END STORAGE CONFIGURATION

    # EMAIL
    DEFAULT_FROM_EMAIL = values.Value('Correspondence <noreply@example.com>')
    EMAIL_HOST = values.Value('smtp.sendgrid.com')
    EMAIL_HOST_PASSWORD = "test" # values.SecretValue(environ_prefix="", environ_name="SENDGRID_PASSWORD")
    EMAIL_HOST_USER = "test" # values.SecretValue(environ_prefix="", environ_name="SENDGRID_USERNAME")
    EMAIL_PORT = values.IntegerValue(587, environ_prefix="", environ_name="EMAIL_PORT")
    EMAIL_SUBJECT_PREFIX = values.Value('[Correspondence] ', environ_name="EMAIL_SUBJECT_PREFIX")
    EMAIL_USE_TLS = True
    SERVER_EMAIL = EMAIL_HOST_USER
    # END EMAIL

    # TEMPLATE CONFIGURATION
    # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-dirs
    TEMPLATE_LOADERS = (
        ('django.template.loaders.cached.Loader', (
            'django.template.loaders.filesystem.Loader',
            'django.template.loaders.app_directories.Loader',
        )),
    )
    # END TEMPLATE CONFIGURATION

    # CACHING
    # Only do this here because thanks to django-pylibmc-sasl and pylibmc
    # memcacheify is painful to install on windows.
    try:
        # See: https://github.com/rdegges/django-heroku-memcacheify
        from memcacheify import memcacheify
        CACHES = memcacheify()
    except ImportError:
        CACHES = values.CacheURLValue(default="memcached://127.0.0.1:11211")
    # END CACHING

有兴趣的也可以看看full project source。有人知道这里出了什么问题吗？或者我可以获得更多有用的调试信息的方法？

Answer 1

对 gunicorn 使用 --bind 标志。

示例：

gunicorn wsgi:application --bind:0.0.0.0:80

为什么 gunicorn 会挂在这个配置中？

Why might gunicorn be hanging in this configuration?

django

python-3.x

gunicorn

docker