Question

我正在尝试运行一个使用Flask微框架开发的非常简单的Python Web应用程序。我正在使用Ubuntu 10.04 LTS进行VPS。我跟着this instructions以获得令人欣慰的“Hello world！”，这是一次成功的体验。但现在，我正在设置一个稍微复杂的配置，我无法使其正常工作。

我的应用程序的Apache Virtual Host配置是：

<VirtualHost *:80>
    ServerAdmin    user@example.org
    ServerName    domain.com
    ServerAlias    www.domain.com

    DocumentRoot    /srv/www/domain.com/public_html/

    LogLevel    info    # I've put this for debugging purposes.
    ErrorLog    /srv/www/domain.com/logs/error.log
    CustomLog    /srv/www/domain.com/logs/access.log combined

    WSGIDaemonProcess   username   user=username    group=username   threads=5   processes=5
    WSGIScriptAlias /myapplication/     /srv/www/domain.com/myapplication/myapplication.wsgi

    <Directory /srv/www/domain.com/myapplication/myapplication>
        WSGIProcessGroup    username
        WSGIApplicationGroup %{GLOBAL}
        Order deny,allow
        Allow from all
    </Directory>

    Alias /css    /srv/www/domain.com/public_html/css
    Alias /js    /srv/www/domain.com/public_html/js
    Alias /images    /srv/www/domain.com/public_html/images
</VirtualHost>

我的WSGI配置文件是：

# -*- coding: utf-8 -*-
from myapplication import app as application

上述配置有问题吗？

最后，Apache给了我一个500错误页面。所以我查看日志：

[info] mod_wsgi (pid=3132, process='', application='domain.com|/myapplication/'): Loading WSGI script '/srv/www/domain.com/myapplication/myapplication.wsgi'.
[error] mod_wsgi (pid=3132): Target WSGI script '/srv/www/domain.com/myapplication/myapplication.wsgi' cannot be loaded as Python module.
[error] mod_wsgi (pid=3132): Exception occurred processing WSGI script '/srv/www/domain.com/myapplication/myapplication.wsgi'.
[error] Traceback (most recent call last):
[error] File "/srv/www/domain.com/myapplication/myapplication.wsgi", line 3, in <module>
[error] from myapplication import app as application
[error] ImportError: No module named myapplication

树结构类似于：

/myapplication
    myapplication.wsgi
    myapplication (python package)

显然，Python无法在myapplication中找到sys.path模块。但我已经检查了印刷品，它就在那里。我知道这个问题可能很难解决，但我有点困惑。我怎么能找到正确的方向来解决这个问题？

Answer 1

@larsks向我指出了一个暂时但有效的解决方案。现在，myapplication.wsgi看起来像：

import os
import sys

sys.path.append('/srv/www/domain.com/myapplication/')
os.environ['PYTHON_EGG_CACHE'] = '/srv/www/domain.com/myapplication/.python-egg'

from myapplication import app as application

谢谢！

使用mod_wsgi在Apache上运行最简单的Flask应用程序的一些问题

1 个答案: