有沒有辦法在 NGINX 中動態轉發子域？

我已經做了所有我能做的Google搜尋，但沒有運氣。我試圖弄清楚如何為使用者創建命名空間，比如 user.mysite.com，並將其重定向到他/她的文件夾 (mysite.com/user)。有沒有辦法讓 nginx 將所有子域轉發到各自的文件夾？我這樣做的原因是因為我希望能夠即時創建這樣的子域，而無需重新啟動 nginx。

我的 nginx.conf 文件現在看起來像這樣僅供參考。

server
{

# add www.
if ($host ~ ^(?!www)) {
   rewrite ^/(.*)$ http://www.$host/$1 permanent;
}


server_name www.mydomain.com;

access_log /var/log/nginx/mydomain.com.access.log;

   error_log /var/log/nginx/mydomain.com.error.log;

root /usr/share/nginx/mydomain.com/;

index index.php index.html index.htm;

# use fastcgi for all php files
location ~ \.php$
{
   fastcgi_pass 127.0.0.1:9000;
   fastcgi_index index.php;
   fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
   include fastcgi_params;
}

# deny access to apache .htaccess files
location ~ /\.ht
{
   deny all;
}
}

這是我發現的一小段程式碼，它將所有子域重定向到 www.mydomain.com。如果它可以重定向到他們各自的目錄，那正是我所需要的。

# remove subdomain
if ($host ~ "^www\.(.*?)\.(.{3,}\.([a-z]{2}\.[a-z]{2}|[a-z]{2,4}))$") {
   set $host_without_sub $2;
   rewrite ^/(.*)$ http://www.$host_without_sub/$1 permanent;
}

又一整天的Google搜尋，我發現了這個寶石：

http://publications.jbfavre.org/web/nginx-vhosts-automatiques-avec-SSL-et-authentification-version2.en

#######################  Magic  RewriteRules  #######################

uninitialized_variable_warn off;

##### Rewrite rules for domain.tld => www.domain.tld #####
if ($host ~* ^([^.]+\.[^.]+)$) {
   set $host_without_www $1;
   rewrite ^(.*) $scheme://www.$host_without_www$1 permanent;
}

##### Rewrite rules for subdomains with automatic SSL support #####
set $redirect_ssl 'no';
if ($host ~* ^(.*)\.([^.]+\.[^.]+)$) {
   set $ssl_subdomain $1;
   set $host_without_www $1.$2;
}
if (-e $document_root/config/ssl/$ssl_subdomain) {
   set $redirect_ssl 'yes';
}
if ($scheme = 'https') {
   set $redirect_ssl 'no';
}
if ($redirect_ssl = 'yes') {
   rewrite ^(.*) https://$ssl_subdomain.$host_without_www$1 permanent;
}

##### Rewrite rules for automatic authentication #####
if ($host ~* ^([^.]+)\.[^.]+\.[^.]+$) {
   set $auth_subdomain $1;
}
if (-e $document_root/config/auth/$auth_subdomain) {
   rewrite ^(.*)$ /auth$1;
   break;
}

##### Rewrite rules for automatic subdirectory rewriting #####
set $redirect_subdir 'yes';
if ($redirect_subdir_done = 'yes') {
   set $redirect_subdir 'no';
}
if ($host ~* 'www\.[^.]+\.[^.]+$') {
   set $redirect_subdir 'no';
}
if ($host ~* ^([^.]+)\.[^.]+\.[^.]+$) {
   set $subdir_domain '$1';
}
if ($redirect_subdir = 'yes') {
   set $redirect_subdir_done 'yes';
   rewrite ^(.*)$  /$subdir_domain$1 break;
}

####################  End Of Magic RewriteRule  ####################

引用自：https://serverfault.com/questions/461010