Flask shows apache2 page on DNS-CodePudding

My flask app works when accessed via IP(http://194.233.174.220/) but when using the dns(http://friendhub.social/), it only shows the default apache2 page. If I try to move my own page over to /var/www/html, it will only show a directory tree

/etc/apache2/sites-available/social.conf:

<VirtualHost *:80>
                ServerName 194.233.174.220
                ServerAdmin [email protected]
                WSGIScriptAlias / /var/www/social/social.wsgi
                <Directory /var/www/social/social/>
                        Options Indexes FollowSymLinks
                        AllowOverride None
                        Require all granted
                </Directory>
                Alias /static /var/www/social/social/static
                <Directory /var/www/social/social/static/>
                        Order allow,deny
                        Allow from all
                </Directory>
                ErrorLog ${APACHE_LOG_DIR}/error.log
                LogLevel warn
                CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

apache2 version: Apache/2.4.52 (Ubuntu)
flask: 2.2.2
python: 3.10.4
os: ubuntu 22.04.1 LTS
deployment on Linode

CodePudding user response：

You need to set ServerName to the hostname in DNS, not the IP address.

This is because many different hostnames may be associated with a single ip address, for instance on a shared hosting platform. In the HTTP request the browser will send a header that says

Host: friendhub.social

and that's how Apache httpd knows how to route the request.