Split NGINX configuration file

To split NGINX configuration file into multiple conf.d/*.conf files.

This is defined in /etc/nginx/nginx.conf file as below

http {
    ...
    include /etc/nginx/conf.d/*.conf;
}

Pros

Avoid large configuration file and manage easiler.

NGINX will read all files in conf.d directory, which has extension name as .conf and use them all as final configuration.

Cons

Only definitions in http { ... } directive can be defined in conf.d/*.conf.

Which file to be loaded first is unclear.

One server definition should not be defined in mulitipe files.