Hello i installed the centminmod latest on centos7, after a while one of websites stopping the working and give 504 gateway time out error, other 2 website without problem but one website is going away about a few hours later. There are no new records in php-fpm error log. Also sometimes with this problem, all websites gives database errors. If i run the fpmrestart command, then everything is okey again. So what may be problem ? Website software: wordpress (without any cache) i stopped iptables, csf firewall and i m using cloudflare. [root@snc723 public]# netstat -n | grep :80 |wc -l 1335 My webserver have 2x 6core intel xeon x5660 cpu and 49gb ddr3 ram. If i look the ram usage, it is too low on default installation. How can i use the my ram effective with your centminmod max. optimal configured settings.