【发布时间】：2019-09-29 17:39:13
【问题描述】：
我一直在尝试将我构建的 Django 实例设置为数据库服务器。选择了 DigitalOcean 作为我的平台，并且读到 Dokku 是一个有用的 PaaS 系统，它将为我尝试部署的这个 API 提供更好的可扩展性。
在过去的 3-4 天里，我一直在解决这个问题，并且真的已经通过了我可以在网上找到的所有潜在解决方案。
作为一名前端开发人员，我在后端安装问题上相当不擅长。
起初我认为 Dokku 是一种 Git-push 功能，我将从 localhost -> Dokku -> Git -> Deploy 推送。
深入挖掘，我为 Dokku 设置了公私密钥，以授权将 Git 推送到 Github。
最终，在最终放弃那条路线之后，我确实意识到我错了，Dokku 的大致工作方式是 localhost -> Git push -> Dokku -> Deploy。
在过去 15-18 小时的开发过程中一直在此工作。流程似乎有效，我真的不需要在 DigitalOcean 液滴上做太多安装。
然而，我面临的最大问题是这个
我目前的安装是这样的：
- DigitalOcean Droplet 1-click Dokku VERSION 0.14.6
- 操作系统 Ubuntu 18.04
我已经添加了我在根文件夹下的以下在线博客和论坛中找到的所有建议文件：
requirements.txt
---
absl-py==0.4.0
astor==0.7.1
backports.weakref==1.0.post1
dj-database-url==0.5.0
Django==1.11.20
django-cors-headers==3.0.0
django-filter==2.0.0
djangorestframework==3.9.4
enum34==1.1.6
funcsigs==1.0.2
futures==3.2.0
gast==0.2.0
GDAL==2.4.1
grpcio==1.14.1
h5py==2.8.0
Keras==2.2.2
Keras-Applications==1.0.4
Keras-Preprocessing==1.0.2
Markdown==2.6.11
mock==2.0.0
nose==1.3.7
numpy==1.16.3
pbr==4.2.0
Pillow==6.0.0
protobuf==3.6.1
psycopg2==2.8.2
pytz==2019.1
PyYAML==3.13
scipy==1.1.0
six==1.11.0
sqlparse==0.3.0
tensorboard==1.10.0
tensorflow==1.10.1
termcolor==1.1.0
Theano==1.0.2
virtualenv==16.5.0
Werkzeug==0.14.1
whitenoise==4.1.2
---
runtime.txt
---
<code>python-3.6.8</code>
app.json
---
{
"scripts": {
"dokku": {
"postdeploy": "./manage.py migrate"
}
}
}
---
Procfile
---
web: gunicorn core.wsgi — log-file -
---
settings.py
---
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dbname',
'USER': 'dbuser',
'PASSWORD': 'dbpassword',
'HOST': 'localhost',
'PORT': '5432',
},
'original': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}
我期待在键入“git push dokku master”之后，编译会给我一个部署 url，我可以查看和启动 Django 服务器。
然而，我面对的是：
Enumerating objects: 8664, done.
Counting objects: 100% (8664/8664), done.
Delta compression using up to 8 threads
Compressing objects: 100% (5363/5363), done.
Writing objects: 100% (8664/8664), 17.23 MiB | 3.67 MiB/s, done.
Total 8664 (delta 2186), reused 8568 (delta 2157)
remote: Resolving deltas: 100% (2186/2186), done.
-----> Cleaning up...
-----> Building apihirebred from herokuish...
-----> Adding BUILD_ENV to build environment...
-----> Python app detected
-----> Installing python-3.6.8
-----> Installing pip
-----> Installing dependencies with Pipenv 2018.5.18…
Installing dependencies from Pipfile…
-----> Noticed GDAL. Bootstrapping gdal.
-----> $ python manage.py collectstatic --noinput
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 20, in <module>
import psycopg2 as Database
ModuleNotFoundError: No module named 'psycopg2'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
django.setup()
File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 114, in populate
app_config.import_models()
File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/config.py", line 211, in import_models
self.models_module = import_module(models_module_name)
File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py", line 117, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/base.py", line 321, in add_to_class
value.contribute_to_class(cls, name)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/options.py", line 204, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/__init__.py", line 28, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py", line 201, in __getitem__
backend = load_backend(db['ENGINE'])
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 24, in <module>
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named 'psycopg2'
! Error while running '$ python manage.py collectstatic --noinput'.
See traceback above for details.
You may need to update application code to resolve this error.
Or, you can disable collectstatic for this application:
$ heroku config:set DISABLE_COLLECTSTATIC=1
https://devcenter.heroku.com/articles/django-assets
更具体地说：
"django.core.exceptions.ImproperlyConfigured: 加载错误 psycopg2 模块：没有名为“psycopg2”的模块”错误，一直存在 无论我如何尝试解决该错误，都会坚持下去。
: :
！ [远程拒绝] master -> master（预接收挂钩 拒绝）错误：未能将一些参考推送到“dokku@server”
无论我如何尝试在 Dokku 和我的本地主机上安装“psycopg2”，我都无法解决该错误。
我真诚地希望有人可以在上述方面为我提供帮助，因为我不是 Dokku 问题的专家，也不是它如何真正编译包以及为什么编译器无法检索“psycopg2”以进行部署。
我也希望这也不是唯一的问题。
希望听到您的专家建议。谢谢！
【问题讨论】：
标签： django postgresql psycopg2 digital-ocean dokku