Nginx status is provided by http_stub_status module. To verify if your Nginx is installed with this module, run
nginx -V 2>&1 | grep -o with-http_stub_status_module
If the result shows “with-http_stub_status_module”, you have the module installed.
To enbale stats edit nginx configuration file for your web site, add following code
location /nginx_status { stub_status; }
To linmit access to this page, you can use allow
location /nginx_status { stub_status; allow 127.0.0.1; allow YOUR_IP_HERE; deny all; }
Replace YOUR_IP_HERE with your actial IP address.
Restart nginx with
systemctl restart nginx
Now you should be able to see nginx server stats at url
https//yourdomain.com/nginx_status
See Nginx