在 nginx 中使用正则表达式重定向子域 [英] Redirecting a subdomain with a regular expression in nginx

问题描述

nginx 文档说 server_name 指令支持正则表达式.我一直在用头撞墙，试图让一个微不足道的正则表达式工作.

The nginx documentation says that the server_name directive supports regular expressions. I've been banging my head against the wall trying to get even a trivial regex working.

我希望 http://subdomain.mydomain.com 重定向到 http://mydomain.com/subdomain

这是我的代码.

server {
  server_name "~^subdomain.mydomain.com$";
  rewrite ^ http://mydomain.com/subdomain;
}

另外，可能值得注意.在 nginx 配置文件的更下方有一条规则:

Also, potentially noteworthy. Further down in the nginx config file there is a rule:

server {
  server_name *.mydomain.com
  ...
}

我做错了什么?

更新:

有人建议我不要为此使用正则表达式......以提供更清晰的信息:琐碎的正则表达式只是为了排除故障.真正的正则表达式看起来更像是...

It has been suggested that I not use regex for this... to offer a little more clarity: the trivial regex was simply for purposes of troubleshooting. The real regex will look more like...

server {
  server_name "~^.*(cvg|cincinnati).fakeairport(app)?.(org|com)$";
  rewrite ^ http://fakeairport.com/cincinnati;
}

server {
  server_name "~^.*(lex|lexington).fakeairport(app)?.(org|com)$";
  rewrite ^ http://fakeairport.com/lexington;
}

所以最好使用正则表达式.

So it would be preferable to use regex.

推荐答案

回答一个老问题以帮助他人

To answer an old question to help others

使用 nginx 1.1.19，您可以执行以下操作:

using nginx 1.1.19 you can do the following:

server {
    server_name     ~^(?<subdomain>w+).domainA.com$;

    location / {
            rewrite ^ https://$subdomain.domainB.com$request_uri permanent;
    }
}

domainA.com 之前的子域匹配并存储在变量 $subdomain 中，然后可以在重写中使用.这将像 xxx.domainA.com 这样的 url 重写为 xxx.domainB.com，并且只有一个服务器指令.

The subdomain before domainA.com is matched and stored in variable $subdomain which then can be used in the rewrite. This rewrites url like xxx.domainA.com to xxx.domainB.com with only one server directive.

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