我正在尝试将 python dash 应用程序部署到我的 apache 服务器。我遵循了我能找到的有关此配置的少量信息（官方文档; 这个故障排除线程好一点）。当我访问该网站时，页面返回一个500 Internal Server Error，被描述为"Dash object not callable"在服务器错误日志中。这些是配置文件：
>> cat /var/www/html/wsgi/dashGAF.wsgi
#!/usr/bin/python
import sys
sys.path.insert(0,"/home/ubuntu/dashboards/")
from dashGAF import app as application
>> cat /etc/apache2/sites-available/dash.conf
WSGIDaemonProcess dashGAF user=ubuntu group=ubuntu home=/home/ubuntu threads=5
WSGIScriptAlias /dashGAF /var/www/html/wsgi/dashGAF.wsgi
<Directory /home/ubuntu/dashboards>
WSGIProcessGroup dashGAF
WSGIApplicationGroup %{GLOBAL}
WSGIScriptReloading On
Require all granted
</Directory>
>> cat dashGAF.py
# -*- coding: utf-8 -*-
import dash
import dash_core_components as dcc
import dash_html_components as html
external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']
app = dash.Dash(__name__, external_stylesheets=external_stylesheets, routes_pathname_prefix='/dashGAF/')
server = app.server
app.layout = html.Div(children=[
html.H1(children='Hello Dash'),
html.Div(children='''
Dash: A web application framework for Python.
'''),
dcc.Graph(
id='example-graph',
figure={
'data': [
{'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'bar', 'name': 'SF'},
{'x': [1, 2, 3], 'y': [2, 4, 5], 'type': 'bar', 'name': u'Montréal'},
],
'layout': {
'title': 'Dash Data Visualization'
}
}
)
])
if __name__ == '__main__':
app.run_server(debug=True, host='0.0.0.0')
当我访问我的仪表板应用程序时the_ip_address/dashGAF，我得到一个500 Internal Server Error。检查 error.log 我看到：
[Sat Jun 20 04:42:59.502528 2020] [wsgi:error] [pid 6064:tid 140622992238336] [client 118.210.193.245:50042] mod_wsgi (pid=6064): Exception occurred processing WSGI script '/var/www/html/wsgi/dashGAF.wsgi'.
[Sat Jun 20 04:42:59.502675 2020] [wsgi:error] [pid 6064:tid 140622992238336] [client 118.210.193.245:50042] TypeError: 'Dash' object is not callable
任何解决此问题的帮助将不胜感激！此外，任何有关更改配置文件的建议都会有所帮助。
更多细节：
- 我收到模块导入错误，例如 /var/log/apache2/error.log 中的以下内容：
[Sat Jun 20 03:38:58.556219 2020] [wsgi:error] [pid 583:tid 140297735726848] [client 118.210.193.245:55574] File "/home/ubuntu/dashboards/dashGAF.py", line 2, in <module>
[Sat Jun 20 03:38:58.556265 2020] [wsgi:error] [pid 583:tid 140297735726848] [client 118.210.193.245:55574] import dash
[Sat Jun 20 03:38:58.556285 2020] [wsgi:error] [pid 583:tid 140297735726848] [client 118.210.193.245:55574] ImportError: No module named dash
我可以通过执行以下操作来解决这个问题sudo pip install dash==1.13.2.
-
我已经制作了所有 *.py 和 *.wsgi 文件-rwxr-xr-x
-
我启用了站点配置sudo a2ensite dash.conf并重新加载配置udo systemctl reload apache2.
-
我相信正在运行的python版本是python2.7（基于apache error.log）；不确定如何指定 2.7 或 3。
-
如果我编辑 dashGAF.wsgi 来获得from dashGAF import server as application我收到 500 内部错误，但服务器日志中包含以下详细信息：
[Sun Jun 21 06:33:28.181450 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] mod_wsgi (pid=12237): Target WSGI script '/var/www/html/wsgi/dashGAF.wsgi' cannot be loaded as Python module.
[Sun Jun 21 06:33:28.181512 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] mod_wsgi (pid=12237): Exception occurred processing WSGI script '/var/www/html/wsgi/dashGAF.wsgi'.
[Sun Jun 21 06:33:28.181545 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] Traceback (most recent call last):
[Sun Jun 21 06:33:28.181577 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] File "/var/www/html/wsgi/dashGAF.wsgi", line 4, in <module>
[Sun Jun 21 06:33:28.181685 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] from dashGAF import server as application
[Sun Jun 21 06:33:28.181714 2020] [wsgi:error] [pid 12237:tid 139670549669632] [client 118.210.193.245:52221] ImportError: cannot import name server
可能有一个有用的细节，其中写着“目标 WSGI 脚本 '/var/www/html/wsgi/dashGAF.wsgi' 无法作为 Python 模块加载”。 ??
- 如果我编辑 dashGAF.wsgi 来获得
application = app.server我收到 404 Not Found：
from dashGAF import app
application = app.server
