pipe all requests to a particular port - node js application

Question

I am trying to run node js and apache in a same server for that

I am trying to pipe all requests to a particular port (eg: example.com:80 to example.com:3000).

For that, I changed httpd.conf file located in "/etc/httpd/conf/httpd.conf"

Added these lines st the end

<VirtualHost *:80>
    ServerName mysite.com
    ProxyPreserveHost on
    ProxyPass / http://localhost:3000/
    ProxyPassReverse / http://localhost:3000/
</VirtualHost>

and restarted using sudo service httpd restart

but nothing changed.

There are more 2 httpd.conf files available ->

/usr/local/apache/conf/httpd.conf
/etc/httpd/conf/httpd.conf
/etc/apache2/conf/httpd.conf

at the end of /etc/apache2/conf/httpd.conf file I saw this:

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#
#   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#   DO NOT EDIT. AUTOMATICALLY GENERATED.  USE INCLUDE FILES IF YOU NEED TO MAKE A CHANGE
#   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

I cannot understand the line USE INCLUDE FILES IF YOU NEED TO MAKE A CHANGE.

What should I do????

Answer 1

I personally prefer Nginx over Apache2 but you can use any of them.

for apache2 you should enable proxy and proxy_http modules:

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo service apache2 restart

then you should add a config file for apache usually named /etc/apache2/sites-available/example.com.conf: (you can remove Directory part if you don't need it)

<VirtualHost *:80>
ServerName example.com

   ProxyRequests Off
   ProxyPreserveHost On
   ProxyVia Full
   <Proxy *>
      Require all granted
   </Proxy>

   <Location / >
      ProxyPass http://127.0.0.1:3000
      ProxyPassReverse http://127.0.0.1:3000
   </Location>

    <Directory "/var/www/example.com/html">
    AllowOverride All
    </Directory>
</VirtualHost>

then enable the config and restart apache2 with:

sudo a2ensite example.com
sudo services apache2 restart

for Nginx config you should add these lines to /etc/nginx/site-available/your-app.conf:

upstream app {
server 0.0.0.0:3000;
}

server {
    listen 80;
    listen [::]:80;
    server_name example.com;


    location / {
        proxy_pass http://app/;
        proxy_set_header Host $http_host;
    }
    access_log /var/log/nginx/app-access.log;
    error_log /var/log/nginx/app-error.log info;
}

then you should run:

sudo ln -s /etc/nginx/sites-available/your-app.conf /etc/nginx/sites-enabled/

and then:

# remove default config symlink from sites-enabled dir
rm /etc/nginx/sites-enabled/default
# test if config is OK:
sudo nginx -t
# restart the nginx:
sudo systemctl restart nginx

---

P.S: I used the apache conf example from this link