How to combine flask with apache

The development web server that comes with flask performs very poorly, responds slowly, and performs reverse proxy directly through nginx, often failing to respond to requests. There are two servers that can be used in a production environment, have good performance, and support Flask programs, namely Gunicorn and uWSGI, but these two modules do not provide support for windows.

So we need to use the mod_wsgi module to enable flask to be deployed on apache. The mod_wsgi module is an Apache FastCGI module written in python. (Recommended learning: apache use)

After downloading, unzip it to get Apache24, open it into the conf file, and open it with text. I use Atom to open it here.

Now explain what we need to modify:

1. ServerRoot "c:/Apache24": Change it to your own directory address

2. Listen 8080: Port No. configuration, some users may find that their 80 port is occupied, which may be occupied by IIS or SQLserver. We can modify this port number to facilitate testing

3. Modify directory authorization

Original ：

<Directory />
AllowOverride none
Require all denied
</Directory>

After modification:

<Directory />
Options FollowSymLinks
AllowOverride None
Order deny,allow
Allow from all
</Directory>

4. Modify the document root path to your own file path

DocumentRoot "c:/Apache24/htdocs"
<Directory "c:/Apache24/htdocs">

5. Mod module configuration (key points)

(1) First install the downloaded mod.whl file:

pip install

(2) After successful installation, run the following command:

mod_wsgi-express module-config

(3) After the above command is successfully run, we can get three pieces of information:

(4) Then use these three pieces of information to replace the .so file and add it to the apache configuration file Medium:

6. Configuration site (key point):

# <VirtualHost> definition.  These values also provide defaults for
# any <VirtualHost> containers you may define later in the file.

Because I am a person who does not know how to configure apache, I first saw the configuration in the reference link, so I can search through the full text and find this sentence. I can be sure to put this at the bottom of the file.

Copy the following paragraph to the bottom of the conf file, and modify the path to your own path

<VirtualHost *:8080 >
ServerAdmin example@xx.com
DocumentRoot E:\Environment\Apache\Apache24\text_web
<Directory "E:\Environment\Apache\Apache24\text_web">
Order allow,deny
Allow from all
</Directory>
WSGIScriptAlias / E:\Environment\Apache\Apache24\text_web\test.wsgi
</VirtualHost>

The above site configuration instructions:

(1) Project path ( It does not have to be placed in the apache directory):

DocumentRoot E:\Environment\Apache\Apache24\text_web

(2) wsgi module startup file (key point):

WSGIScriptAlias / E:\Environment\Apache\Apache24\text_web\test.wsgi

Note: The "/" here is required and represents the url prefix. It can be modified later according to needs.

(3) Project path permissions: Set to allow all

<Directory "E:\Environment\Apache\Apache24\text_web">
Order allow,deny
Allow from all
</Directory>

At this point our httpd.conf file has been configured.

2. Enter the configuration of the flask project below:

Project directory:

1 , test.wsgi file description:

import sys
sys.path.insert(0, "E:/Environment/Apache/Apache24/text_web") #项目路径

from test import app #Introduce our flask project project name

application = app #applcation must not be changed to anything else, because wsgin is parsing this file, only recognize the applcation (reference link)

2. The main file of flask

from flask import Flask
 
app = Flask(__name__)
 
@app.route('/hello')
def hello_world():
    return 'Hello World!'
 
if __name__ == '__main__':
    app.run()

At this point, our project configuration is basically completed. What needs special attention here is the wsgi file Project introduction.

3. Start or install apache

Start cmd in administrator mode and enter the bin file path of Apache24:

Install apache to serve the system :

httpd -k install

Start apache:

httpd -k start

I found that some computers can run it directly by opening httpd.exe without installing httpd into the system service.

Other apache commands that may be used:

Stop the apache service:

httpd -k stop

Restart the apache service:

httpd -k restart

At this point, our flask project passes wsgi The module is built after the apache service has been built. Open localhost:8080/hello and see if helloworld appears. If you find that the project is still not configured successfully, please pay attention to the error output log of apache. The error output log is in \Apache24\logs\error.lo

The above is the detailed content of How to combine flask with apache. For more information, please follow other related articles on the PHP Chinese website!