ReverseProxy on Apache2 Server

To a Subpath

This creates a subpath behind the domain of your server. For example https://ismus.net/gitea. (source)

1. In /etc/apache2/conf-available create a fitting .conf-file for your service. Here e.g. for gitea

<cli> <Location /gitea>

   ProxyPass http://localhost:3000 nocanon
   ProxyPassReverse http://localhost:3000

</Location> </cli>

1. Don't forget to activate the config with sudo a2enconf gitea resp. your conf-file.
2. Of course you may have to sudo systemctl reload apache2 your server to have it work.

To a Subdomain

1. In /etc/apache2/sites-available create a new file with <subdomain>.conf.
2. It should look like that (here with a local server listening to port 3000)

<cli> <IfModule mod_ssl.c>

  <VirtualHost *:443>
      ProxyPreserveHost On
      ProxyPass "/" "http://localhost:3000/"
      ProxyPassReverse "/" "http://localhost:3000/"
      ServerName subdomain.yourserver.net
      TransferLog /var/log/apache2/access.log
      ErrorLog /var/log/apache2/error.log
      SSLCertificateFile /etc/letsencrypt/live/yourserver.net/fullchain.pem
      SSLCertificateKeyFile /etc/letsencrypt/live/yourserver.net/privkey.pem
      Include /etc/letsencrypt/options-ssl-apache.conf
  </VirtualHost>

</IfModule> </cli>

1. Activate this config by sudo a2ensite subdomain and
2. sudo systemctl reload apache2