我创建了一个烧瓶应用程序，该应用使用美丽的汤和硒来刮擦和跟踪亚马逊产品价格。数据是使用CS50版本的Sqlalchemy存储的。
然后，我创建了一个帐户，以使用Ubuntu使用Oracle始终免费VM。我遵循了这一精美的指南 https://asdkazmi.medium.com/deploying-flask-app-app-with-with-wsg-wsgi-and-apache-server-on-on-ubuntu-20-04-3966607e0e0e40e40f 文件和WSGI文件。我还将网络规则添加到Oracle的虚拟云网络和Iptables上，我相信这很好。
此后，该网站仍然无法启动。 Apache的错误日志显示了“ cendriseError：[errno 13]拒绝的权限：'/flask_session'”。基于这篇文章在Weberver上编写文件时（烧瓶，apache＆amp; wsgi）我将OS Env更改为我的env os.chdir（'/home/home/ubuntu/flaskapp'）
sudo chown -r ubuntu：www -data flaskapp
sudo chmod -r g+s flaskapp 。
现在，我的头版可以在 rows = userdb.execute（“从userame =？”中select * select * select * select *？ 。
我认为这不是我的代码错误，因为它在本地运行良好，并且当我使用本指南在Oracle VM上进行设置时，生产服务器也可以工作-us/iaas/developer-Tutorials/tutorials/flask-on-ubuntu/01oci-ubuntu-flask-summary.htm“ rel =” nofollow noreferrer“开发人员教程/教程/flask-on-ubuntu/01oci-ubuntu-flask-summary.htm 。
我已经找到了有关调试的指南使用GDB。但是使用 source/etc/apache2/envvars
sudo -e gdb/usr/sbin/apache ，它只是告诉我“未指定的可执行文件”。
关于错误的想法？
I created a Flask app that uses Beautiful Soup and Selenium to scrape and track Amazon product prices. The data was stored using CS50's version of SQLalchemy.
I then created an account to use Oracle's always free VM, with Ubuntu. I followed this excellent guide to the dot https://asdkazmi.medium.com/deploying-flask-app-with-wsgi-and-apache-server-on-ubuntu-20-04-396607e0e40f and set up Apache's conf file and the Wsgi file. I also added the network rules on Oracle's Virtual Cloud Network and to iptables, which I believe works fine.
Following this, the website still couldn't launch. Apache's error log showed a "PermissionError: [Errno 13] Permission denied: '/flask_session'". Based on this post Permission issue when writing file on webserver (flask, apache & wsgi) I changed the OS env to my env os.chdir('/home/ubuntu/flaskapp') and used chown to give rights
sudo chown -R ubuntu:www-data flaskapp
sudo chmod -R g+s flaskapp.
Now, my front page is accessible on http://129.150.38.171/ . However, upon any request to the server, Chrome displays "This page isn’t working 129.150.38.171 didn’t send any data." Apache's log shows a "segmentation fault (core dumped) python flask". Based on the sequence of my code, the error begins when I try to execute SQL, e.g. rows = usersdb.execute("SELECT * FROM users WHERE username = ?", request.form.get("username")).
I do not think that it is not my codes' error as it runs fine locally and the production server also worked when I set it up on Oracle VM using this guide https://docs.oracle.com/en-us/iaas/developer-tutorials/tutorials/flask-on-ubuntu/01oci-ubuntu-flask-summary.htm .
I've found this guide on debugging https://www.bustawin.com/debug-segmentation-faults-in-apache-from-mod_wsgi/ using gdb. But with source /etc/apache2/envvars
sudo -E gdb /usr/sbin/apache, it just tells me "No executable file specified".
Any ideas on what could be the error?
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