Found it: In order to specify the port number you would need to edit the "listen =" directive in /etc/php5/fpm/pool.d/adopteesofcolor.org however I. There are many guide about configuring NGINX with PHP FPM, but many of them are incomplete (don't handle PATH_INFO correctly) or contain security issues. Proxy PHP requests with NGINX and FastCGI using PHP-FPM. Only change this if you require PHP-FPM use network connections. I have run docker-compose elinoi-webserver ping -c3 elinoi-php-fpm to try and test the link between my two images and it seems to be working. Up to now, we have used TCP connections for our PHP-FPM pool ( , I wrote before a guide Howto install Nginx/PHP-FPM on Fedora 29/28, Normally concurrent connection / per one server is good, but. After I check the How to set up Apache2 and PHP-FPM via unix socket?, I changed my adopteesofcolor.org to version: '2' services: web. By making some small tweaks to the PHP-FPM and NGINX Change the way NGINX connects to PHP-FPM to be more scalable in high traffic. Hello, I'm using a droplet to run a couple of static websites, each on their own domains, like: adopteesofcolor.org adopteesofcolor.org adopteesofcolor.org Reload PHP-FPM and Nginx config for changes to take effect. since FPM has started; listen queue len – the size of the socket queue of pending connections.