404 url not found error for flask app on apache2

Question

I wrote an endpoint with Flask to handle http post request data in json format. When trying to deploy it on apache2, post requests got 404 error: "The requested URL /bridge was not found on this server" . I'm using python 3.5.2, apache 2.4, OpenSSL/1.0.2g, ubuntu 16.04, mod_wsgi4.3.0 compiled for python 3.5.1+

Anyone has any idea? Apache cannot see /var/www but why? or there is a problem in SSL configuration? (https works for the webiste)

I have

at /var/www/bridge/bridge.wsgi

#!/usr/bin/python3
import sys

sys.path.insert(0,'/var/www/bridge')

from bridge import app as application

conf file at /etc/apache2/sites-enabled/bridge.conf

<VirtualHost *:443>
ServerName www.newocto.org

WSGIDaemonProcess bridge user=www-data group=www-data threads=5  home=/var/www/bridge/
WSGIScriptAlias /bridge /var/www/bridge/bridge.wsgi

<Directory /var/www/bridge>
    WSGIProcessGroup bridge
    WSGIApplicationGroup %{GLOBAL}


    Require all granted
</Directory>

my 000-default.conf file is like this:

<VirtualHost *:443>
# The ServerName directive sets the request scheme, hostname and port that
# the server uses to identify itself. This is used when creating
# redirection URLs. In the context of virtual hosts, the ServerName
# specifies what hostname must appear in the request's Host: header to
# match this virtual host. For the default virtual host (this file) this
# value is not decisive as it is used as a last resort host regardless.
# However, you must set it for any further virtual host explicitly.
ServerName www.newocto.org
DocumentRoot /var/www/html

SSLEngine on
SSLCertificateFile /etc/ssl/certs/newocto_org.crt
SSLCertificateKeyFile /etc/ssl/private/newocto.key
SSLCertificateChainFile /etc/ssl/certs/COMODORSAAddTrustCA.crt
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{SERVER_NAME}/$1 [R,L]

# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
# error, crit, alert, emerg.
# It is also possible to configure the loglevel for particular
# modules, e.g.
#LogLevel info ssl:warn

ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined

# For most configuration files from conf-available/, which are
# enabled or disabled at a global level, it is possible to
# include a line for only one particular virtual host. For example the
# following line enables the CGI configuration for this host only
# after it has been globally disabled with "a2disconf".
#Include conf-available/serve-cgi-bin.conf
</VirtualHost>

<VirtualHost *:80>
ServerName  newocto.org/
Redirect / https://newocto.org/
</VirtualHost>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

and my flask code at /var/www/bridge/bridge.py is

#!/usr/bin/python3

from flask import Flask


app = Flask(__name__)

@app.route('/', methods =['POST'])
def deliver():
    from flask import request
    raw=request.get_json(force=True)
    return raw

import mysql.connector
dbconn=  mysql.connector.connect(host='xxxx',port='3306',database='xx',user='root',password='xxx')
cursor=dbconn.cursor()
query="""insert into bridge_test2 (email) values ('{}')""".format(raw)
cursor.execute(query)
dbconn.commit()
dbconn.close()


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



#file permissions are like this:   
#4 -rwxr-xr-x 1 root www-data 537 Dec 20 13:46 bridge.py
#4 -rwxr-xr-x 1 root www-data 117 Dec 20 14:10 bridge.wsgi

Graham Dumpleton Graham Dumpleton · Accepted Answer · 2017-12-20T20:21:09

You can't have two VirtualHost sections for same ServerName and port, it will only use the first it sees.

Copy the contents of the VirtualHost in bridge.conf into that in 000-default.conf for same ServerName and port.

404 url not found error for flask app on apache2

1 Answers