I'm working with splunk support on a open file/thread limit problem we are running into. They are asking about the systemd limits, that I'm not familiar with.

We have increased the settings in /etc/security/limits.conf to nproc & nofiles to 120000 for all users but the splunk application doesn't see this limit. It is reporting a limit 65535.

I just want to make sure that I use the right setting in /etc/systemd/system.conf or user.conf to test increasing the limits within systemd.
Or is this the wrong path entirely ?