Nginx 通配符子域重定向到非 www

Question

I have a domain set up with wildcard subdomains for white label access. I'm trying to safeguard against people typing in http://www.subdomain.domain.com/ but struggling to find a solution. (I already have a rewrite in action to always use a secure protocol.)

My current setup is this (well, the relevant part):

server {
    listen 80;
    server_name  domain.com *.domain.com;
    rewrite ^ https://$http_host$request_uri? permanent;
}

server {
    listen 443;
    ssl on;
    ssl_certificate /path/to/certificate.crt;
    ssl_certificate_key /path/to/certificate.key;
    server_name domain.com *.domain.com;

    ...
}

What I have achieved is that http://domain.com and http://sub.domain.com both redirect to the https protocol, in other words https://domain.com and https://sub.domain.com respectively. What I'd still like to achieve on top is that both http://www.domain.com and https://www.domain.com redirect to https://domain.com and that both http://www.sub.domain.com and https://www.sub.domain.com redirect to https://sub.domain.com as well.

Could anyone help, please?

(PS: I was even thinking of applying a global nginx setup to remove the www part of the URL for ALL domains running on the same server at once if that's an option.)

Answer 1

To drop the leading www. sequence from the requested server name, place this if block near the top of your SSL server container (before any other URI processing directives):

if ($http_host ~* ^www\.(.*)$ ) 
{ 
    return 301 $scheme://$1$request_uri;
}

Generally if should be used very carefully , but it is perfectly fine in this case.