我找到了一个Django项目,但无法通过以下方式在Docker容器中运行它:
git clone git clone https://github.com/NAL-i5K/django-blast.git
$ cat requirements.txt
在此文件中,必须更新以下依赖项:- psycopg2==2.8.6
我有以下 Dockerfile:
FROM python:2
ENV PYTHONUNBUFFERED=1
RUN apt-get update && apt-get install -y postgresql-client
WORKDIR /code
COPY requirements.txt /code/
RUN pip install -r requirements.txt
COPY . /code/
RUN mkdir -p /var/log/django
RUN mkdir -p /var/log/i5k
对于docker-compose.yml
我来说:
version: "3"
services:
db:
image: postgres
volumes:
- ./data/db:/var/lib/postgresql/data
- ./scripts/install-extensions.sql:/docker-entrypoint-initdb.d/install-extensions.sql
environment:
- POSTGRES_DB=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
web:
build: .
command: python manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
depends_on:
- db
links:
- db
$ cat scripts/install-extensions.sql
CREATE EXTENSION hstore;
我必须改变:
$ vim i5k/settings_prod.py
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'postgres',
'USER': 'postgres',
'PASSWORD': 'postgres',
'HOST': 'db',
'PORT': '5432',
}
}
接下来我跑了docker-compose up --build
web_1 | Performing system checks...
web_1 |
web_1 | System check identified no issues (0 silenced).
web_1 | Unhandled exception in thread started by <function wrapper at 0x7f8a9733a6d0>
web_1 | Traceback (most recent call last):
web_1 | File "/usr/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 229, in wrapper
web_1 | fn(*args, **kwargs)
web_1 | File "/usr/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 116, in inner_run
web_1 | self.check_migrations()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 168, in check_migrations
web_1 | executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 19, in __init__
web_1 | self.loader = MigrationLoader(self.connection)
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/migrations/loader.py", line 47, in __init__
web_1 | self.build_graph()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/migrations/loader.py", line 191, in build_graph
web_1 | self.applied_migrations = recorder.applied_migrations()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 59, in applied_migrations
web_1 | self.ensure_schema()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 49, in ensure_schema
web_1 | if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 162, in cursor
web_1 | cursor = self.make_debug_cursor(self._cursor())
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 135, in _cursor
web_1 | self.ensure_connection()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 130, in ensure_connection
web_1 | self.connect()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/utils.py", line 98, in __exit__
web_1 | six.reraise(dj_exc_type, dj_exc_value, traceback)
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 130, in ensure_connection
web_1 | self.connect()
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 119, in connect
web_1 | self.connection = self.get_new_connection(conn_params)
web_1 | File "/usr/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 176, in get_new_connection
web_1 | connection = Database.connect(**conn_params)
web_1 | File "/usr/local/lib/python2.7/site-packages/psycopg2/__init__.py", line 127, in connect
web_1 | conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
web_1 | django.db.utils.OperationalError: could not connect to server: Connection refused
web_1 | Is the server running on host "localhost" (127.0.0.1) and accepting
web_1 | TCP/IP connections on port 5432?
web_1 | could not connect to server: Cannot assign requested address
web_1 | Is the server running on host "localhost" (::1) and accepting
web_1 | TCP/IP connections on port 5432?
我错过了什么?
答案1
在 compose 中的 db 下添加以下行
db:
.
.
.
ports:
- "5482:5432" #these are example ports
然后在 settings_prod.py 中,确保 DATABASES 包含正确的端口
import myproj.settings
myproj.settings.DATABASES = {. . ., 'PORT' : '5482', . . .}
你的 settings_prod.py 还应该包括下列的:
最后,你应该从你使用的每个 jupyter 笔记本中导入 settings_prod.py