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How to set up Reverse Proxy in Apache/httpd

Install and enable apache2 proxy modules

sudo a2enmod proxy
sudo a2enmod proxy_http
sudo a2enmod proxy_balancer
sudo a2enmod lbmethod_byrequests
sudo systemctl restart apache2

proxies all requests (“/”) to a single backend:

ProxyPass "/"  "http://www.example.com/"

to point to the reverse proxy, instead of back to itself, the ProxyPassReverse directive is most often required:

ProxyPass "/"  "http://www.example.com/"
ProxyPassReverse "/"  "http://www.example.com/"

Only specific URIs can be proxied

ProxyPass "/images"  "http://www.example.com/"
ProxyPassReverse "/images"  "http://www.example.com/"

Example

<VirtualHost *:80>

ServerName example.net
Documentroot /var/www/html/

ProxyPass "/"  "http://www.example.com/"
ProxyPassReverse "/"  "http://www.example.com/"

</VirtualHost>

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