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http-redirectnginx
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Reputation: 10564

nginx.conf redirect multiple conditions

I want to redirect requests on two conditions using Nginx.

This doesn't work:

  if ($host = 'domain.example' || $host = 'domain2.example'){
    rewrite ^/(.*)$ http://www.domain.example/$1 permanent;
  }

What is the correct way to do this?

Upvotes: 73

Views: 126629

Answers (7)

Kordi
Kordi

Reputation: 2465

Another version is to map it to one string and then evaluate it via regex. In this case the if condition is: $arg_version && $request_method = "GET"

map "$arg_version:$request_method" $bypass_cache {
  default 1;
  ~^(.+):GET$ 0;
}

location /  {
  if ($bypass_cache = 0) {
      expires max;
  }
  ...  
}

Upvotes: 1

Nikita_kharkov_ua
Nikita_kharkov_ua

Reputation: 394

I think the easiest way to do it it's just use regular expression:

if ($host ~ "domain.example|domain2.example") {
    rewrite ^/(.*)$ http://www.example.com/$1 permanent;
}

But it's good only when you have only strings; for complex logic, sure, it is not correct.

Upvotes: 6

David
David

Reputation: 61

Rewriting multiple domains to a single domain and avoiding a looping condition in the browser.

server {
    listen       80;
    server_name  www.wanted_domain.example wanted_domain.example www.un_wanted_domain.example un_wanted_domain.example;
    if ($host = 'un_wanted_domain.example'){
       return 301 $scheme://www.wanted_domain.example$request_uri;
    }
    if ($host = 'www.un_wanted_domain.example'){
       return 301 $scheme://www.wanted_domain.example$request_uri;
    }

Upvotes: 6

Cole Tierney
Cole Tierney

Reputation: 10314

Here's a declarative approach:

server {
    listen       80;
    server_name  `domain.example` `domain2.example`;
    return 301 $scheme://www.domain.example$uri;
}

server {
    listen       80  default_server;
    server_name  _;
    #....
}

Upvotes: 7

shadowdroid
shadowdroid

Reputation: 91

another possibility would be

server_name domain.example domain2.example;
set $wanted_domain_name domain.example;
if ($http_host != $wanted_domain_name) {
    rewrite  ^(.*)$  https://$wanted_domain_name$1;
}

so it will redirect all to one specific but it's based on the use case I guess

Upvotes: 7

kolbyjack
kolbyjack

Reputation: 18290

The correct way would be to use a dedicated server for the redirect:

server {
  server_name domain.example domain2.example;
  rewrite ^ http://www.domain.example$request_uri? permanent;
}

Upvotes: 25

Chris Barretto
Chris Barretto

Reputation: 9529

I had this same problem before. Because Nginx can't do complex conditions or nested if statements, you need to evaluate over 2 different expressions.

set a variable to some binary value then enable if either condition is true in 2 different if statements:

set $my_var 0;
if ($host = 'domain.example') {
  set $my_var 1;
}
if ($host = 'domain2.example') {
  set $my_var 1;
}
if ($my_var = 1) {
  rewrite ^/(.*)$ http://www.domain.example/$1 permanent;
}

Upvotes: 118

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