无法从Docker Django连接到Sql Server

Question

我正在尝试将我的Django连接到现有的遗留MS SQL数据库。

当我尝试在数据库上运行sql时，运行正常：

sql = 'SELECT * FROM ' + db_name + '.INFORMATION_SCHEMA.TABLES'
connection_string = "driver=FreeTDS;server={};PORT={} database={};UID={};PWD={};TDS_Version=8.0;".format(db_host, db_port, db_name, db_user, db_password)
conn = pyodbc.connect(connection_string, autocommit=True)
for row in cursor.fetchall():
  print(row)

我可以看到所有的表，但当我尝试从数据库生成模型时，运行以下命令：

python manage.py inspectdb --database pirineos > pirineos_models.py

我得到了错误：

django.db.utils.Error: ('08001', '[08001] [FreeTDS][SQL Server]Unable to connect to data source (0) (SQLDriverConnect)')

这些是我的项目文件。

Dockerfile：

FROM python:3.8-slim-buster
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
RUN apt-get update -y && apt-get install -y unixodbc unixodbc-dev tdsodbc freetds-common freetds-bin freetds-dev && apt-get clean && rm -rf /var/lib/apt/lists/*
RUN mkdir /djangonoguero
COPY ./project /djangonoguero/
COPY ./requirements.txt /djangonoguero/
ADD odbcinst.ini /etc/
WORKDIR /djangonoguero
RUN pip install --no-cache-dir -r requirements.txt
EXPOSE 8000

requirements.txt：

pyodbc==3.0.10
django-mssql-backend==2.8.1

settings.py：

DATABASES = {
  'pirineos': {
    'ENGINE': 'sql_server.pyodbc',
    'NAME': DB_PIRINEOS_NAME,
    'USER': DB_PIRINEOS_USER,
    'PASSWORD': DB_PIRINEOS_PASSWORD,
    'HOST': DB_PIRINEOS_HOST,
    'PORT': DB_PIRINEOS_PORT,
    'OPTIONS': {
      'driver': 'FreeTDS',
      'unicode_results': True,
      'driver_supports_utf8' : True,
      'extra_params': 'tds_version=8.0;',
    },
  },
}

odbcinst.ini：

[FreeTDS]
Description=FreeTDS Driver for Linux & MSSQL on Win32
Driver=/usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so
Setup=/usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so
UsageCount=1

Answer 1

已解决

Dockerfile：

FROM python:3.8-slim-buster
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV DEBIAN_FRONTEND noninteractive
ADD odbcinst.ini /etc/
RUN apt-get update -y && apt-get install -y curl gnupg
RUN curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add -
RUN curl https://packages.microsoft.com/config/debian/10/prod.list > /etc/apt/sources.list.d/mssql-release.list
RUN apt-get update -y && apt-get install -y unixodbc unixodbc-dev tdsodbc freetds-common freetds-bin freetds-dev postgresql python-scipy python-numpy python-pandas
RUN apt-get update && ACCEPT_EULA=Y apt-get -y install mssql-tools msodbcsql17
RUN echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bash_profile
RUN echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
RUN apt-get update
RUN mkdir /djangonoguero
COPY ./project /djangonoguero/
COPY ./requirements.txt /djangonoguero/
WORKDIR /djangonoguero
RUN pip install --no-cache-dir -r requirements.txt
EXPOSE 8000

odbcinst.ini：

[FreeTDS]
Description=FreeTDS Driver
Driver=/usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so
Setup=/usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so

settings.py：

'pirineos': {
  'ENGINE': 'sql_server.pyodbc',
  'NAME': DB_PIRINEOS_NAME,
  'USER': DB_PIRINEOS_USER,
  'PASSWORD': DB_PIRINEOS_PASSWORD,
  'HOST': DB_PIRINEOS_HOST,
  'PORT': DB_PIRINEOS_PORT,
  'OPTIONS': {
    'driver': 'FreeTDS',
    'unicode_results': True,
    'host_is_server': True,
    'driver_supports_utf8': True,
    'extra_params': 'tds_version=7.4',
  },
},