Apache + Node.js + mod_proxy. How to route one domain to :3000 and another to :80

Question

Problem: I need to host a Node-application and a php-application on the same server on different domains.

example.com should use port 80 as normal, but node-example

Answer 1

I suggest you create two different virtual host conf files for two domains. This will enable you to configure them independently besides moving them to different servers when the scaling is different.

For apache2 with default installation location,

create a file in /etc/apache2/sites-available/www.example1.com.conf

        ServerName  www.example1.com
        ServerAdmin webmaster@example1.com

        
                Options -Indexes +FollowSymLinks
                AllowOverride All
                Require all granted
                DirectoryIndex index.html
        

        
                Options -Indexes +FollowSymLinks
                AllowOverride All
                Require all granted
                DirectoryIndex index.html
        

        ProxyRequests Off
        ProxyPreserveHost On

        ProxyPass /api/         "http://localhost:30007/"
        ProxyPassReverse /      "http://localhost:30007/"

        ErrorLog ${APACHE_LOG_DIR}/example1/example1.log
        CustomLog ${APACHE_LOG_DIR}/example1/example1.log combined

Create another file www.example2.com.conf in sites-available and copy the above configuration replacing example1 with example2.

For subdomains, replace www in filename and inside configuration with your subdomain, eg: api.

Once you have the conf files created, you have to enable them with command

a2ensite www.example1.com.conf

and then reload apache2 with command

sudo systemctl reload apache2

Make sure you have the directories example1 and example2 created in APACHE_LOG_DIR created before you reload the apache.

Thats it. configure your domain's A record with server IP address in your domain registrar or CDN, whatever you are using and you should be good to go.