Niginx is primarily a web server, but it can also run as a proxy server, load balancer and a HTTP cache.

If you’re running on Debian, Ubuntu, Red Hat or CentOS, the following are several ways of restarting Nginx.

# /etc/init.d/nginx restart
# /etc/init.d/nginx reload
# service nginx restart
# service nginx reload
# nginx -s reload

The last example is more universal and will run in any Linux flavor.