Nginx – In Nginx, how to redirect to another domain, but to also preserve the path AND the subdomain

301-redirectnginxsubdomain

So, for instance, I have a domain olddomain.com and newdomain.com

Here's how I want requests redirects to work:

sub.olddomain.com/hello/world -> sub.newdomain.com/hello/world
olddomain.com/hello/world -> newdomain.com/hello/world

There are many subdomains, so ideally I wouldn't want to create a rule for each one of them.

This seems like a solution:

server {
  listen 80;
  server_name olddomain.com *.olddomain.com;
  rewrite ^(/)(.*)$ http://newdomain.com/$2 permanent;
}

but it doesn't work with subdomains, since all subdomains would redirect to newdomain.com/path without regard for a subdomain.

Best Answer

You seem to be looking for something like this: 

if ($http_host ~ (.*)\.olddomain\.com) {
    set $subdomain $1;
    rewrite (.*)$ http://$subdomain.newdomain.com$1 permanent;
}
rewrite ^(/)(.*)$ http://newdomain.com/$2 permanent;

These are my testcases

$ curl -I -H "Host: test1.olddomain.com" nginx1.tst
HTTP/1.1 301 Moved Permanently
Server: nginx/1.4.4
Date: Thu, 08 May 2014 19:40:33 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://test1.newdomain.com/

$ curl -I -H "Host: test1.test2.olddomain.com" nginx1.tst
HTTP/1.1 301 Moved Permanently
Server: nginx/1.4.4
Date: Thu, 08 May 2014 19:40:38 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://test1.test2.newdomain.com/

$ curl -I -H "Host: test1.test2.olddomain.com" nginx1.tst/with-something/appended.html
HTTP/1.1 301 Moved Permanently
Server: nginx/1.4.4
Date: Thu, 08 May 2014 19:40:54 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://test1.test2.newdomain.com/with-something/appended.html

$ curl -I -H "Host: olddomain.com" nginx1.tst
HTTP/1.1 301 Moved Permanently
Server: nginx/1.4.4
Date: Thu, 08 May 2014 19:41:10 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://newdomain.com/
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