[PHP-INSTALL] PHP FPM processes opening a ton of files and leaving them open

[Joe Auty]

Hello,

I'm finding that my PHP FPM processes are opening a ton of files, so
many that I'm bumping up against OS limits causing my FPM processes to
die. I'm assuming that this is caused by memory leaky PHP apps that are
crashing and these connections not severing? What sort of config options
would be best for me to focus on in turning over new connections and
closing files so that I'm dealing with this more gracefully and don't
have to use the emergency threshold limit or rely on Monit to
automatically reload PHP FPM?