Nginx redirect rule has no affect - nginx

Question

Trying to do a simple redirect:
rewrite https://url.example.com(.*) https://example.com/plugins/url permanent;
Anytime url.example.com is hit, I want it to redirect to that specific path.
EDIT:
Will try to explain this better, as I'm trying to redirect to a specific domain from another.
server {
server_name example.com plugin.example.com;
root /home/www/example.com/public;
}
I see the location used for redirects such as:
location / {
try_files $uri $uri/ /index.php?$query_string;
}
But not sure how to use it in my case, which is to change plugin.example.com to example.com/plugin.
For example:
http://plugin.example.com
https://plugin.example.com
https://plugin.example.com/blah
https://plugin.example.com/blah/more
All of these should redirect to:
https://example.com/plugin

Answer 1

If the original URL is https://url.example.com or https://url.example.com/ then the normalized URI used by the rewrite and location directives will be /. The scheme, host name and query string have all been removed.
To perform a permanent redirect to a URL with a different host name:
Using rewrite (see this document for details):
rewrite ^/$ https://example.com/foo permanent;
Or using location and return (see this document for details):
location = / {
return 301 https://example.com/foo;
}
The second solution is more efficient, as there are no regular expressions to process.
If the original URL includes a query string: The rewrite will append it automatically unless a trailing ? is added. The return will not, but can be added by appending $is_args$args.
If the scheme and host name are unchanged, then both statements can be simplified:
rewrite ^/$ /foo permanent;
Or:
location = / {
return 301 /foo;
}

Answer 2

Redirect from subdomain to subfolder on main site
Do you require a redirect from a subdomain to a subfolder on the main site?
This would be best accomplished by a separate server context, with the appropriate server_name specification.
Else, you could also do this with an if statement testing against $host.
As already pointed out elsewhere, rewrite directive operates based on $uri, which does not contain the hostname.
server_name-based matching (recommended):
Hardcoded redirect with a limited number of hostnames (recommended):
server {
server_name plugin.example.com;
return 301 $scheme://example.com/plugin$request_uri;
}
server {
server_name about.example.com;
return 301 $scheme://example.com/about$request_uri;
}
Regex-based redirect from any subdomain to the main domain:
server {
server_name ~^(?:www\.)?(?<subdomain>.*)\.example\.com$;
return 301 $scheme://example.com/$subdomain$request_uri;
}
Regex-based redirect from a limited number of subdomain to the main domain:
server {
server_name ~^(?:www\.)?(?<subdomain>plugin|about)\.example\.com$;
return 301 $scheme://example.com/$subdomain$request_uri;
}
if-based:
If-statement-based redirect with hardcoded hostnames:
server {
server_name .example.com;
…
if ($host = plugin.example.com) {
return 301 $scheme://example.com/plugin$request_uri;
}
if ($host = about.example.com) {
return 301 $scheme://example.com/about$request_uri;
}
…
}
If-statement-based redirect with a regex-based matching:
server {
server_name .example.com;
…
if ($host ~ ^(?:www\.)?(?<subdomain>plugin|about)\.example\.com$) {
return 301 $scheme://example.com/$subdomain$request_uri;
}
…
}
Please refer to http://nginx.org/r/server_name for more discussion of which option may be best for you.

Answer 3

You can create separate servers for example.com and plugin.example.com. And create redirect inside plugin.example.com server.
server {
server_name plugin.example.com;
return 301 https://example.com/plugin;
}
server {
server_name example.com;
root /home/www/example.com/public;
}