How to generically remove the www of the domain in nginx?

Question

I have a server config in nginx which matches several domains:

server {
  server_name example1.com example2.com example3.com;
  # ...
}

And I would like to redirect the www versions to the corresponding domains. I know how to do it for a single domain with a redirect and I would know how to do the inverse thing but I can't find a way here.

Any idea ?

Thanks ! :)

Be very careful. You probably want to do the opposite. Especially if you ever have aspirations of your sites being large. — Michael Hampton, May 13 '13 at 15:34
I know that but sadly it's not my call :( Thanks for the link though :) — Happynoff, May 15 '13 at 09:19

cadmi · Accepted Answer · 2017-03-24T11:50:30.187

9

Don't use if

server {
    server_name ~^(www\.)(?<domain>.+)$;
    return 301 $scheme://$domain$request_uri;    
}

That's all ...

edited Mar 24 '17 at 11:50

answered May 14 '13 at 08:12

cadmi

7,488
1
18
24

Wow, I didn't know it was possible to do that oO Thanks ! – Happynoff May 15 '13 at 09:18
~^(www\.)?(?<domain>.+)$ will match its own redirect; remove the first question mark: ~^(www\.)(?<domain>.+)$ – Alexander Holmbäck Mar 23 '17 at 17:14
Fixed in the answer. – Andy Swift Oct 31 '18 at 10:14
So this can be used as global server block and it works... but how does one deal with SSL requests in different domains? – TCB13 Jan 24 '20 at 11:19

score 4 · Answer 2 · edited Oct 16 '20 at 10:49

4

Ok I found this solution:

server {
  server_name www.exemple1.com www.example2.com www.exemple3.com;
  listen 80;
if ($http_host ~ "www.(.*)") { #Note the extra "&quot; after the www
    return 301 $scheme://$1$request_uri;
  }
}

It works like a charm :)

edited Oct 16 '20 at 10:49

aliqandil

123

answered May 13 '13 at 13:41

Happynoff

193

I would actually set up separate server blocks for each domain name. Using IF is generally bad and really non-performant with NGINX. – probablyup May 13 '13 at 17:12
1

nginx docs kinda sucks on explaining what's going on in that if condition. http://nginx.org/en/docs/http/ngx_http_rewrite_module.html#if, anyway this answer helped my case. – lasec0203 Mar 23 '18 at 04:44

How to generically remove the www of the domain in nginx?

2 Answers2