Python Flask -无法将目标WSGI脚本作为Python模块加载

Question

我已经使用python flask编写了REST，现在我想使用apache来运行它们，以便将它们投入生产，但会出现错误。

结构是这样的：

/opt/myapp/venv/api/app-code.py

if __name__ == '__main__':
    app.run()

/var/www/html/myapp/myapp.wsgi

import sys
sys.path.insert(0, "/opt/myapp/venv/api")
from app-code import app
application = app

/etc/httpd/conf.d/ssl.conf

<VirtualHost *:443>
    ServerName hostname.com
    DocumentRoot "/var/www/html/myapp"
    SSLEngine on

    WSGIDaemonProcess myapp  python-path=/opt/myapp/venv/lib/python3.6/site-packages/ threads=5

    <Directory "/var/www/html/myapp">
            Order allow,deny
            Allow from all
    </Directory>
    WSGIScriptAlias / /var/www/html/myapp/myapp.wsgi

    ErrorLog /var/log/httpd/ssl_error_log
    TransferLog /var/log/httpd/ssl_access_log
    LogLevel debug

    SSLCertificateFile /opt/ssl-certs/ssl-cert.pem
    SSLCertificateKeyFile /opt/ssl-certs/ssl-key.pem
    SSLCertificateChainFile /opt/ssl-certs/ssl-certchain.pem
</VirtualHost>

当我进行API调用时，出现以下错误：

[Sun Jan 14 03:22:50 2018] [info] Initial (No.1) HTTPS request received for child 2 (server hostname.com:443)
[Sun Jan 14 03:22:50 2018] [info] [client 103.3.43.163] mod_wsgi (pid=24539, process='', application='hostname.com|'): Loading WSGI script '/var/www/html/myapp/myapp.wsgi'.
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163] mod_wsgi (pid=24539): Target WSGI script '/var/www/html/myapp/myapp.wsgi' cannot be loaded as Python module.
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163] mod_wsgi (pid=24539): Exception occurred processing WSGI script '/var/www/html/myapp/myapp.wsgi'.
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163] Traceback (most recent call last):
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163]   File "/var/www/html/myapp/myapp.wsgi", line 8, in <module>
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163]     from app-code import app
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163]   File "/opt/myapp/venv/api/app-code.py", line 3, in <module>
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163]     from flask import Flask, abort, request, jsonify, g, url_for
[Sun Jan 14 03:22:50 2018] [error] [client 103.3.43.163] ImportError: No module named flask
[Sun Jan 14 03:22:50 2018] [debug] ssl_engine_kernel.c(1894): OpenSSL: Write: SSL negotiation finished successfully

我看了很多帖子，尝试了不同的选项，但都不能让它运行。

Answer 1

这里最关键的是ImportError。要么flask没有安装在您的虚拟环境中，要么apache没有正确处理venv。我认为您可能希望在WSGIDaemonProcess指令中使用python-home而不是python-path。[http://modwsgi.readthedocs.io/en/develop/user-guides/virtual-environments.html](mod_wsgi应该会有所帮助。

Answer 2

经过多次尝试，我终于能让它正常工作了。

我使用了错误的wsgi模块作为mod_wsgi.so，在将它改为mod_wsgi_python3.6.so之后，一切都开始工作了。