i have very big problem when users are 1000 online site works good with out any problem but when users goes 2000 i get 502 Bad Gateway and ram and cpu usage is not high
CPU usage 45% user, 9% kernel, 3% IO, 43% idle
Real memory 2 GB used, 15.49 GB total
how can i fix this error please
28661#0: *247830 connect() to unix:///var/www/vhosts/system/mydomain.com/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream
CPU usage 45% user, 9% kernel, 3% IO, 43% idle
Real memory 2 GB used, 15.49 GB total
how can i fix this error please
28661#0: *247830 connect() to unix:///var/www/vhosts/system/mydomain.com/php-fpm.sock failed (11: Resource temporarily unavailable) while connecting to upstream