Too many open files NGINX

Question

I've got an error on OS X:

2020/10/11 02:45:00 [alert] 38577#0: *10290 socket() failed (24: Too many open files) while connecting to upstream, client: 127.0.0.1, server: 127.0.0.1, request: "GET /favicon.ico HTTP/1.0", upstream: "http://127.0.0.1:9000/favicon.ico", host: "127.0.0.1:9000", referrer: "http://127.0.0.1:8008/"

Tried to modify ulimit, got worker_rlimit_nofile 10000, project has like 1500-1600 files, but does it matter and what to do?

Answer 1

In my case worked just adding this to the config file:

worker_rlimit_nofile 40000;

events {
    worker_connections  4096;
}

Answer 2

The easiest way to apply updated ulimit - reboot. If you can't easily reboot(for example if this is a production server) try answers from this question.