Reverse proxy to virtual machines?

[Verhoeckx]

Hi Cockpit developers,

I'm building a server with Cockpit and two virtual machines. In both virtual machines I want to install a web server.

How can I set up a reverse proxy (with Apache) on the host in such a way that when you visit domain A you are redirected to virtual machine A, and when you visit domain B you are redirected to virtual machine B?

domain A  ----> host web server ----> virtual machine A   ---> web server A
domain B  ----> host web server ----> virtual machine B  ----> web server B

I think this is a common scenario so there must be some good documentation about this somewhere?

[Verhoeckx]

For everybody who has the same problem, this is how I did it.

1. Install the Apache web server.
   sudo dnf install httpd

2. Enable the Apache web server in systemd.
   sudo systemctl enable httpd

3. Start the Apache web server.
   sudo systemctl start httpd

4. Open port 80 and 443 in the firewall.

sudo firewall-cmd --permanent --zone=public --add-service=http
sudo firewall-cmd --permanent --zone=public --add-service=https
sudo firewall-cmd --reload

5. Create a new virtual hosts file.
   sudo vim /etc/httpd/conf.d/virtualhosts.conf

6. Add the following code.

ServerName localhost
DocumentRoot /var/www/html/

<VirtualHost *:80 >
    ServerName [your.domain.com]
    ProxyPreserveHost On
    ProxyPass / http://[IP address virtual machine]/
    ProxyPassReverse / http://[IP address virtual machine]/
</VirtualHost>

7. Check the configuration file for syntax errors.
   apachectl configtest

8. Enable HTTP connections in SELinux.
   sudo setsebool -P httpd_can_network_connect on

9. Restart Apache.
   sudo systemctl restart httpd

This setup only forwards HTTP request.