Change Default PHP-FPM settings on cPanel/WHM Server

1. Create the file /var/cpanel/ApachePHPFPM/system_pool_defaults.yaml
2. Add you custom settings



3.  

   
   
   
   pm_max_children : 3
   pm_max_requests : 10
   pm_min_spare_servers : 5
   pm_max_spare_servers : 15
   pm_process_idle_timeout : 10

   
   
   
4. Remove existing config files using following command
   

   rm -rf /var/cpanel/userdata/*/*.php-fpm.yaml

5. Rebuild New config files using following command
   

   /scripts/php_fpm_config --rebuild

6. You may need to enable the php-fpm for the sites from whm again.