nginx: redirecting only 'www' subdomain to main domain?

Question

Update: April 20th 2013, Still no solution found, please help

Looking at my nginx config, the only like that could be the culprit is this:

server {
        listen 80;
        listen [::]:80 ipv6only=on default_server;
        rewrite ^(.*) https://$host$1 permanent;
}

Literally I need 'www' to be redirected to the main domain.

Could this be done in nginx?

I am a bit confused about this matter and Godaddy support is telling me each time something different.

I have forwarded my www domain to the main domain and it doesn't work.

www.domain --> domain.com     Fails

However any other subdomain such as test, can be forwarded to the main domain without any trouble.

test.domain --> domain.com    Ok

Godaddy claims:

or this you will need to setup a www CNAME that maps to @. On your host, you can setup a coded redirect https://domain.com in an index file or .htacess file.

I don't understand how to achieve this.

Answer 1

You should first configure your DNS zone as such:

@   IN A <IP ADDRESS>
www IN A <IP ADDRESS>

Using this configuration, anything like www.example.com, and example.com will be resolved to IP ADDRESS which should be your Web server's IP address.

Then, in your Nginx configuration you put this:

server {
  listen 80;
  server_name example.com;
  return 301 https://example.com$request_uri;
}
server {
  listen 80;
  listen 443 ssl;
  server_name www.example.com;
  return 301 https://example.com$request_uri;
}
server {
  listen 443 ssl;
  server_name example.com;
  ...
}

Answer 2

You don't need regex in this task, by the way. Try this config, for example.

server {
        listen *:80 default_server;
        listen [::]:80 ipv6only=on default_server;
        return 301 https://domain.com$request_uri;
}