nginx 配置多个二级域名

    server {
        server_name
            domain.com
            www.domain.com
            *.domain.com
        ;
 
        set $subdomain '';
        if ($host ~* ((?!www).+).domain.com) {
            set $subdomain -$1;
        }
 
        root    /home/user/www$subdomain/;
    }