目标 WSGI 脚本无法作为 Python module.Flask.Apache 加载

Posted 2023-02-24

【中文标题】目标 WSGI 脚本无法作为 Python module.Flask.Apache 加载

【英文标题】：Target WSGI script cannot be loaded as Python module.Flask.Apache

【发布时间】：2022-01-02 17:15:11

【问题描述】：

我在烧瓶中有一个为 python3.8 构建的应用程序。我正在尝试使用 apache 部署它并且遇到了问题。

我使用以下命令安装了 wsgi：sudo apt-get install libapache2-mod-wsgi-py3

因为它是专门用于这个单一应用程序的服务器，所以我使用 sudo pip3 全局安装了我的 python 模块，而不是在 virtualenv 中，所以我所有需要/安装的模块都位于/usr/local/lib/python3.8/dist-packages/。

这是我的 .wsgi 文件。 #！ /usr/bin/python

import logging
import sys
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0, '/home/admin/imm-migration/')
from easyucs_api import app as application

这是我的 apache 配置

<VirtualHost *:80>
        ServerAdmin webmaster@localhost
        DocumentRoot /home/admin/imm-migration
        ErrorLog $APACHE_LOG_DIR/error.log
        CustomLog $APACHE_LOG_DIR/access.log combined
        <Directory /home/admin/imm-migration>
                # set permissions as per apache2.conf file
            Options FollowSymLinks
            AllowOverride None
            Require all granted
       </Directory>
        WSGIDaemonProcess migration python-path=/home/admin/imm-migration:/usr/local/lib/python3.8/dist-packages
        WSGIScriptAlias / /home/admin/imm-migration/easyucs_api.wsgi
         WSGIApplicationGroup %GLOBAL
        WSGIProcessGroup migration
        WSGIPassAuthorization On

</VirtualHost>

在运行服务器时出现以下错误

[Wed Nov 24 09:15:39.409792 2021] [core:notice] [pid 7271:tid 140562056457152] AH00094: Command line: '/usr/sbin/apache2'
[Wed Nov 24 09:22:04.219227 2021] [mpm_event:notice] [pid 7271:tid 140562056457152] AH00491: caught SIGTERM, shutting down
[Wed Nov 24 09:26:33.603552 2021] [mpm_event:notice] [pid 2541:tid 139881431014336] AH00489: Apache/2.4.29 (Ubuntu) mod_wsgi/4.5.17 Python/3.6 configured -- resuming normal operations
[Wed Nov 24 09:26:33.603677 2021] [core:notice] [pid 2541:tid 139881431014336] AH00094: Command line: '/usr/sbin/apache2'
[Wed Nov 24 09:26:40.524523 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663] mod_wsgi (pid=2543): Target WSGI script '/home/admin/imm-migration/easyucs_api.wsgi' cannot be loaded as Python module.
[Wed Nov 24 09:26:40.524706 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663] mod_wsgi (pid=2543): Exception occurred processing WSGI script '/home/admin/imm-migration/easyucs_api.wsgi'.
[Wed Nov 24 09:26:40.525657 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663] Traceback (most recent call last):
[Wed Nov 24 09:26:40.525756 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]   File "/home/admin/imm-migration/easyucs_api.wsgi", line 8, in <module>
[Wed Nov 24 09:26:40.525811 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]     from easyucs_api import app as application
[Wed Nov 24 09:26:40.525859 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]   File "/home/admin/imm-migration/easyucs_api.py", line 10, in <module>
[Wed Nov 24 09:26:40.525898 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]     from werkzeug.middleware.dispatcher import \\
[Wed Nov 24 09:26:40.525938 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]   File "/usr/local/lib/python3.8/dist-packages/werkzeug/__init__.py", line 2, in <module>
[Wed Nov 24 09:26:40.525974 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]     from .test import Client as Client
[Wed Nov 24 09:26:40.526015 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]   File "/usr/local/lib/python3.8/dist-packages/werkzeug/test.py", line 30, in <module>
[Wed Nov 24 09:26:40.526084 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]     from .sansio.multipart import Data
[Wed Nov 24 09:26:40.526133 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]   File "/usr/local/lib/python3.8/dist-packages/werkzeug/sansio/multipart.py", line 2, in <module>
[Wed Nov 24 09:26:40.526173 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663]     from dataclasses import dataclass
[Wed Nov 24 09:26:40.526236 2021] [wsgi:error] [pid 2543:tid 139881310197504] [remote 10.81.0.135:63663] ModuleNotFoundError: No module named 'dataclasses'

之前我在尝试为 Django 应用程序安装 apache 时遇到了同样的错误。我通过在根目录中安装 python 包解决了这个问题，即（usr/local/lib/python3.8/dist-packages/ 早些时候它在家里/admin/.local/lib/python3.8/site-packages) 作为 apache 仅访问来自 root 用户的文件..

不知道这里出了什么问题.. 任何帮助将不胜感激。

【参考方案1】：

我已经解决了这个问题。这些是我做的事情

我已经卸载了系统 mod_wsgi 包。

sudo apt-get remove libapache2-mod-wsgi-py3

并使用 pip 安装了 mod_wsgi

sudo -H pip3 install mod_wsgi

如果您收到缺少 Apache httpd 服务器包的错误，您可能需要运行 sudo apt-get install apache2-dev

问题是libapache2-mod-wsgi-py3 包不适用于 Python 3.8，但适用于 Python 3.6。