Nginx a virtual host based on domain name \ port

To implement three types of virtual hosts need to modify the code under Http\server in the Nginx nginx.conf file, share two ways to configure a virtual host:

# domain-based virtual host
server {
        listen;  # Listen to the Port
        server_name a.com, listen to the domain name, note that localhost is also a domain name, can be modified in/etc/hosts

        location/{
                root/var/www/a.com;   # root directory positioning
                index index.html;  # Default access page positioning
        }
    }

# Port-based virtual host configuration
    server {
        listen 8080;  # Listening Port
        server_name 192.168.1.204;  # monitor IP or domain name

        location/{
                root/var/www/html8080;  # root directory positioning
                index index.html;  # Default access page positioning
        }
    }