dnf install nginx
The error accept4() failed (24: Too many open files) in Nginx indicates that your server has hit the system's open file limit. This is typically a system-level issue rather than a problem with your Nginx configuration or the remote location.
How to Fix This:
nginx
worker_processes auto;
worker_rlimit_nofile 65536; # Should be higher than worker_connections
events {
worker_connections 16384; # Increase from default (usually 1024)
}
2. Increase system-wide file limits
For the Nginx user (typically www-data or nginx):
bash
echo "www-data soft nofile 65536" | sudo tee -a /etc/security/limits.conf
echo "www-data hard nofile 65536" | sudo tee -a /etc/security/limits.conf
(Replace www-data with nginx if your system uses that instead.)
For the system (adjust kernel limits):
bash
echo "fs.file-max = 2097152" | sudo tee -a /etc/sysctl.conf
sudo sysctl -p
3. Check and adjust Nginx keepalive settings
Your keepalive_timeout 0; disables keepalive connections entirely, which can actually increase the churn of connection openings/closings. Consider:
nginx
keepalive_timeout 65; # Default is 75 seconds
keepalive_requests 1000; # Default is 100
4. Reload Nginx after changes
bash
sudo systemctl reload nginx