【发布时间】：2018-04-06 23:10:30
【问题描述】：
我有一个使用 Django 1.11 和在 Linux Mint 上运行的 PostgreSQL 10 数据库的本地工作环境。
我正在尝试复制此环境并将其安装在两台 Ubuntu 16.04 开发服务器上：一台用于 Web 服务器，另一台用于 SQL 服务器。
问题是在 Ubuntu PostgreSQL 服务器上运行 Django。
当我获取 Django settings.py 文件并将服务器从“localhost”更改为新 PostgreSQL 服务器的 IP 地址时，使用 manage.py 发出的每个命令都会失败。这包括 createsuperuser、makemigrations 和 migrate。这在我的工作、开发机器和新的 Ubuntu Web 服务器上都失败了。
在更改数据库服务器之后和运行 manage.py 命令之前，我是否遗漏了一个步骤？
我读过的所有内容都说只需运行 makemigrations 并迁移命令。我什至尝试删除 makemigrations 文件夹，但仍然没有成功。
已验证：可以使用相同的用户 ID 和密码远程连接到新的 PostgreSQL 服务器，并且能够创建表（因此问题应该与安全性或远程访问无关）。
这是每次出现的错误：
Traceback (most recent call last):
File "/home/username/Documents/pycharm-2017.2.3/helpers/pycharm/django_manage.py", line 43, in <module>
run_module(manage_file, None, '__main__', True)
File "/usr/lib/python3.5/runpy.py", line 196, in run_module
return _run_module_code(code, init_globals, run_name, mod_spec)
File "/usr/lib/python3.5/runpy.py", line 96, in _run_module_code
mod_name, mod_spec, pkg_name, script_name)
File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/home/dcripps/PycharmProjects/seamus/manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
utility.execute()
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/__init__.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/base.py", line 327, in execute
self.check()
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/base.py", line 359, in check
include_deployment_checks=include_deployment_checks,
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/commands/migrate.py", line 62, in _run_checks
issues.extend(super(Command, self)._run_checks(**kwargs))
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/management/base.py", line 346, in _run_checks
return checks.run_checks(**kwargs)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/checks/registry.py", line 81, in run_checks
new_errors = check(app_configs=app_configs)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/checks/urls.py", line 16, in check_url_config
return check_resolver(resolver)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/core/checks/urls.py", line 26, in check_resolver
return check_method()
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/urls/resolvers.py", line 254, in check
for pattern in self.url_patterns:
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/urls/resolvers.py", line 405, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
return import_module(self.urlconf_name)
File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 986, in _gcd_import
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/home/dcripps/PycharmProjects/seamus/seamus/urls.py", line 21, in <module>
from assessments import views as assessment_views
File "/home/dcripps/PycharmProjects/seamus/assessments/views.py", line 10, in <module>
from .forms import NewForm, CreateForm, DetailForm, EquipmentDetailForm, EquipmentAddForm, InspectionsForm, \
File "/home/dcripps/PycharmProjects/seamus/assessments/forms.py", line 17, in <module>
.values_list('item_number', 'number_type'))
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/query.py", line 250, in __iter__
self._fetch_all()
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/query.py", line 1118, in _fetch_all
self._result_cache = list(self._iterable_class(self))
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/query.py", line 138, in __iter__
for row in compiler.results_iter():
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 836, in results_iter
results = self.execute_sql(MULTI)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 894, in execute_sql
raise original_exception
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 884, in execute_sql
cursor.execute(sql, params)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/backends/utils.py", line 80, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/dcripps/seamus_virt/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "EquipmentTypes" does not exist
LINE 1: ...ntTypes"."equipment_type")) AS "number_type" FROM "Equipment..
谢谢。
Firewall on SQL Server:
:~$ sudo ufw status
Status: active
To Action From
-- ------ ----
5432 ALLOW Anywhere
这是我添加到 pg_hba.conf 文件中的内容： 托管所有所有 0.0.0.0/0 md5
settings.py 中的数据库：
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': '******',
'USER': '******',
'PASSWORD': '******',
'HOST': '192.168.1.221',
'PORT': '5432',
}
}
根据丹尼尔，错误来自这里：
item_number_list = [("", "---------")] + \
list(EquipmentTypes.objects.all()
.annotate(number_type=Concat('item_number', Value(' - '), 'equipment_type'))
.values_list('item_number', 'number_type'))
我用它来填充模型中的下拉列表：
'item_number': forms.Select(choices=item_number_list, attrs={'class': 'form-control'}),
我注释掉了这段代码，一切正常。
【问题讨论】：
-
您需要显示您的数据库设置。另外，您正在运行什么命令来获取该错误？
-
你能分享你的pg_hba.conf吗？你有防火墙吗。请展示你的 Django 配置
标签： python django linux postgresql ubuntu