502 Bad gateway - PHP 7，Nginx，Centos

Question

I am trying to configure CentOS 7.3, Nginx and PHP 7.3, but I am getting:

502 Bad Gateway nginx/1.10.3

This is site.com.conf:

server {
listen 80;
server_name server IP;
root /var/www/site.com/public;
index index.php index.html index.htm;

location ~ \.php$ {
    try_files $uri =404;
    fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $request_filename;
    include fastcgi_params;    
    }
}

If I upload static HTML to the public directory, I can see it, but if I try to load PHP files, i see that error. I have /var/run/php-fpm/php-fpm.sock.

Answer 1

The solution was to change listen.owner and listen.groups in /etc/php-fpm.d/www.conf to nginx:

listen.owner = nginx
listen.group = nginx

Then restart with service php-fpm restart. You can check for errors with: systemctl status php-fpm.service.