Dynamic Hosts with Nginx

I’m sure I’m not the only person who want’s to throw up a site on the web quickly. Further the point, I don’t want to worry about configuring a server either. All I want to do is have a folder on my server that points to the domain it says and access it.

The flow should be simple. If a request for “boom.wolfiezero.com” hits my server, use the folder /var/www/boom.wolfiezero.com. Simple right?

Direct Host Request to Folder of the Same Name

Within /etc/nginx/sites-avaliable/ create a file called zzzz-default (so it’s always at the end of the tree). Within that file add the following server block rule set:

server {
    listen  [::]:80;
    listen  80;

    server_name     ~^(.+)$;
    set             $file_path $1;
    root            /var/www/$file_path;
    index           index.html;
}

Write that file and restart the Nginx service (sudo service nginx restart). Done!

That will now take the requested domain and find the folder that matches. You can add any additional rules you may need such as for reading PHP files or setting a deeper web root. I typically do have PHP processing on and I always set the root to be in a public folder, in case I want a private area.

Removing the “www”

If you want to take it to the next level, you can even set it so that if a request like “www.wolfiezero.com” or “www.boom.wolfiezero.com”, the “www.” part is removed.

At the top of the file, before our current server block, add the following:

server {
    server_name     ~^www\.(.+)$;
    set             $file_path $1;
    return          301 $scheme://$1$request_uri;
}

It just makes things a little bit cleaner but also could help with SEO needs.

Just a Note

I do like having a dynamic host on my server for ease, it’s convenient. But for anything major I’m working on I would create a dedicated host configuration file. It gives me that finer control and I can easily assign a security certificate to it as well. This method is just for ease when I want to quickly show somebody something and then probably delete it again.