客户端无法建立连接，macOS，django，odbc 17，pyodbc答案

【问题标题】：Client unable to establish connection, macOS, django, odbc 17, pyodbc客户端无法建立连接，macOS，django，odbc 17，pyodbc
【发布时间】：2023-04-07 04:26:01
【问题描述】：

在我重新启动笔记本电脑之前一切正常。

我有这个设置：

python 3.8.9
django 3.1.1
pyodbc 4.0.30
pyodbc.drivers() 显示：['ODBC Driver 17 for SQL Server']
SQLServer
openssl version 显示：OpenSSL 1.1.1l 24 Aug 2021
isql -v -k "DRIVER=ODBC Driver 17 for SQL Server;SERVER=<my server>,<my port>;UID=<my username>;PWD=<my password>" 连接到数据库没有问题
服务器名称、端口、用户和密码似乎也是正确的，因为 jdbc 驱动程序可以正常工作。
cat /etc/odbcinst.ini 和 cat /etc/odbc.ini - 都返回这个：

[ODBC Driver 17 for SQL Server]
Description=Microsoft ODBC Driver 17 for SQL Server
Driver=/usr/local/lib/libmsodbcsql.17.dylib
UsageCount=10

odbcinst -j 返回：

unixODBC 2.3.9
DRIVERS............: /usr/local/etc/odbcinst.ini
SYSTEM DATA SOURCES: /usr/local/etc/odbc.ini
FILE DATA SOURCES..: /usr/local/etc/ODBCDataSources
USER DATA SOURCES..: /Users/sgalich/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8

在 django 设置中：

DATABASES = {
    'default': {
        'ENGINE': 'mssql',
        'NAME': os.environ.get('DB_NAME'),
        'USER': os.environ.get('DB_USER'),
        'PASSWORD': os.environ.get('DB_PASSWORD'),
        'HOST': os.environ.get('DB_HOST'),
        'PORT': os.environ.get('DB_PORT'),
        'OPTIONS': {
            'driver': 'ODBC Driver 17 for SQL Server',
        },
    },
}

cat ~/.bash_profile 显示：

export PATH="/usr/local/opt/openssl@1.1/bin:$PATH"
export CPATH="/usr/local/opt/openssl@1.1/include"
export LDFLAGS="-L/usr/local/opt/openssl@1.1/lib"
export CPPFLAGS="-I/usr/local/opt/openssl@1.1/include"
export LIBRARY_PATH="/usr/local/opt/openssl@1.1/lib"
export DYLD_LIBRARY_PATH="/usr/local/opt/openssl@1.1/lib"
export DYLD_FALLBACK_LIBRARY_PATH="/usr/local/opt/openssl@1.1/lib"

我用这个official Microsoft instruction 重新安装了 ODBC 驱动程序。但这没有帮助。我仍然无法启动 django 服务器并遇到此错误：

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/mssql/base.py", line 326, in get_new_connection
    conn = Database.connect(connstr,
pyodbc.OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]Client unable to establish connection (0) (SQLDriverConnect)')

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run
    self.check_migrations()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/core/management/base.py", line 486, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/migrations/executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/migrations/loader.py", line 53, in __init__
    self.build_graph()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/migrations/loader.py", line 220, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/migrations/recorder.py", line 77, in applied_migrations
    if self.has_table():
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/migrations/recorder.py", line 55, in has_table
    with self.connection.cursor() as cursor:
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 259, in cursor
    return self._cursor()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/mssql/base.py", line 230, in _cursor
    conn = super()._cursor()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 235, in _cursor
    self.ensure_connection()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/django/db/backends/base/base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/Users/sgalich/Library/Python/3.8/lib/python/site-packages/mssql/base.py", line 326, in get_new_connection
    conn = Database.connect(connstr,
django.db.utils.OperationalError: ('08001', '[08001] [Microsoft][ODBC Driver 17 for SQL Server]Client unable to establish connection (0) (SQLDriverConnect)')

odbc 日志显示：

[ODBC][33439][1634323619.168260][__handles.c][460]
        Exit:[SQL_SUCCESS]
            Environment = 0x7fb18c951200
[ODBC][33439][1634323619.168500][SQLSetEnvAttr.c][189]
        Entry:
            Environment = 0x7fb18c951200
            Attribute = SQL_ATTR_ODBC_VERSION
            Value = 0x3
            StrLen = 4
[ODBC][33439][1634323619.168927][SQLSetEnvAttr.c][381]
        Exit:[SQL_SUCCESS]
[ODBC][33439][1634323619.169074][SQLAllocHandle.c][377]
        Entry:
            Handle Type = 2
            Input Handle = 0x7fb18c951200
        UNICODE Using encoding ASCII 'UTF-8' and UNICODE 'UCS-2-INTERNAL'

[ODBC][33439][1634323619.169343][SQLAllocHandle.c][513]
        Exit:[SQL_SUCCESS]
            Output Handle = 0x7fb19d4b2000
[ODBC][33439][1634323619.170140][SQLDriverConnectW.c][290]
        Entry:
            Connection = 0x7fb19d4b2000
            Window Hdl = 0x0
            Str In = [DRIVER=ODBC Driver 17 for SQL Server;SERVER=<my server>,<my password>;UID=<my username>;PWD=********************;DATABASE=growth;unico...][length = 144 (SQL_NTS)]
            Str Out = 0x0
            Str Out Max = 0
            Str Out Ptr = 0x0
            Completion = 0
[ODBC][33439][1634323619.291639][__handles.c][460]
        Exit:[SQL_SUCCESS]
            Environment = 0x7fb19d4c0a00
[ODBC][33439][1634323619.291819][SQLGetEnvAttr.c][157]
        Entry:
            Environment = 0x7fb19d4c0a00
            Attribute = 65002
            Value = 0x70000ee057a0
            Buffer Len = 128
            StrLen = 0x70000ee05784
[ODBC][33439][1634323619.292027][SQLGetEnvAttr.c][273]
        Exit:[SQL_SUCCESS]
[ODBC][33439][1634323619.292192][SQLFreeHandle.c][220]
        Entry:
            Handle Type = 1
            Input Handle = 0x7fb19d4c0a00
[ODBC][33439][1634323619.292399][SQLDriverConnectW.c][699]
        Exit:[SQL_ERROR]
[ODBC][33439][1634323619.292558][SQLDriverConnect.c][748]
        Entry:
            Connection = 0x7fb19d4b2000
            Window Hdl = 0x0
            Str In = [DRIVER=ODBC Driver 17 for SQL Server;SERVER=<my server>,<my password>;UID=<my username>;PWD=********************;DATABASE=growth;unico...][length = 144 (SQL_NTS)]
            Str Out = 0x70000ee06160
            Str Out Max = 2048
            Str Out Ptr = 0x0
            Completion = 0
        DIAG [08001] [Microsoft][ODBC Driver 17 for SQL Server]Client unable to establish connection

        DIAG [01S00] [Microsoft][ODBC Driver 17 for SQL Server]Invalid connection string attribute

[ODBC][33439][1634323619.346187][SQLDriverConnect.c][1637]
        Exit:[SQL_ERROR]
[ODBC][33439][1634323619.346372][SQLGetDiagRecW.c][535]
        Entry:
            Connection = 0x7fb19d4b2000
            Rec Number = 1
            SQLState = 0x70000ee08504
            Native = 0x70000ee084ec
            Message Text = 0x7fb19dad5e00
            Buffer Length = 1023
            Text Len Ptr = 0x70000ee08502
[ODBC][33439][1634323619.346517][SQLGetDiagRecW.c][596]
        Exit:[SQL_SUCCESS]
            SQLState = [08001]
            Native = 0x70000ee084ec -> 0 (32 bits)
            Message Text = [[Microsoft][ODBC Driver 17 for SQL Server]Client unable to establish connection]
[ODBC][33439][1634323619.346654][SQLFreeHandle.c][290]
        Entry:
            Handle Type = 2
            Input Handle = 0x7fb19d4b2000
[ODBC][33439][1634323619.346751][SQLFreeHandle.c][339]
        Exit:[SQL_SUCCESS]

我设法找到的所有答案都没有帮助，包括这个答案：ODBC can't find correct OpenSSL version after upgrading OpenSSL

这很奇怪，直到我重新启动笔记本电脑（没有操作系统更新，只是重新启动）之前，一切都正常工作了很长时间。这个问题可能与使用路径导出一些变量有关吗？请帮我解决这个问题。

【问题讨论】：

我也遇到了同样的错误，你找到解决办法了吗？谢谢！
@DPs in /usr/local/bin 我将文件夹 openssl@1.1 中的所有文件复制到 openssl 文件夹中，它开始工作。不确定这是否是一个可接受的解决方案。
感谢您的评论，我试过了，但我的 /usr/local/bin 文件夹中没有 openssl@1.1 文件夹，Rajat 的解决方案对我有用。谢谢
相关：github.com/microsoft/homebrew-mssql-release/issues/59

标签： python django path openssl odbc

【解决方案1】：

我不确定你是否能找到这个。但是以下解决方案对我有用。我的 odbc 找不到 ssl 版本 1。我这样做了：在我的 /usr/local/opt/

rm openssl

或

rm openssl@3

这个想法是删除指向它所指向的任何 openssl 的链接。您也可以向您的取景器查询。

然后新建一个指向openssl1.1的链接

ln -s /usr/local/Cellar/openssl@1.1/1.1.1l_1 /usr/local/opt/openssl

【讨论】：

Rajat 谢谢你的回答。在我在这里发布这个问题之前我已经这样做了，但这对我没有帮助。但对我有帮助的是：我将文件夹 openssl@1.1 中的所有文件复制到 openssl 文件夹中。

【解决方案2】：

我在类似的设置中遇到了完全相同的错误。由于我在 M1 macbook 上运行，我发现我的问题是 Python 安装在 Intel x86-64 架构上，但 msodbcsql/unixodbc 驱动程序运行在 Arm64 架构上。

通过运行以下命令查看这是否是您的问题：

% file $(which odbcinst)
% file $(which isql)  
% file $(which python3)

这应该输出：

Mach-O 64 位可执行 x86_64，或
Mach-O 64 位可执行 arm64

一切都应该返回相同的输出。如果一个不同，那是你的问题。

如果是这种情况，请确定您应该使用什么拱门，然后将组件重新安装到正确的拱门中。

就我而言，我必须使用 Rosetta Terminal 在 Intel 架构 (/usr/local/bin/brew) 中安装 brew 并使用它安装所有组件。

现在我的 pipenv 在 Intel 中运行 python 并使用 Intel odbc 驱动程序。安装文件夹：

% file $(which python3)
/usr/local/bin/python3: Mach-O 64-bit executable x86_64

% file $(which isql)    
/usr/local/bin/isql: Mach-O 64-bit executable x86_64

% file $(which odbcinst) 
/usr/local/bin/odbcinst: Mach-O 64-bit executable x86_64

【讨论】：