使用NGINX auth_request和oauth2_proxy设置标头

Question

我想使用auth_request和oauth2_proxy在成功的身份验证请求时设置标头,然后将其传递给将处理实际请求的下一个代理内联.

我已经设置了NGINX和各种代理来做他们的事情,但是我不确定如何设置来自服务器的标头(图中的AUTH PROXY),我正在使用auth请求,以便将该标头传递给下一个服务器(图中的BACKEND SERVER)

NGINX ---- auth request ----> AUTH PROXY
                                  |
  |     <---      201  <------  SUCCESS
  |
  ----> underlying request ----> BACKEND SERVER

我的NGINX配置看起来像

server {                                                       
    listen                   9123;                             
    resolver                 10.3.0.2;                         
    resolver_timeout         30;                               

    location / {                                               
        auth_request      /_auth;                             
        proxy_set_header x-user $http_x_user;                
        proxy_pass       http://backend_server;                
    }                                                          

    location = /_auth {                                       
        internal;                                              
        proxy_pass https://auth;          
        proxy_pass_request_body off;                           
        proxy_set_header Content-Length "";                    
        proxy_set_header X-Original-URI $request_uri;
    }                                                                                                                             
}                                                              

当我发出实际请求时,我在NGINX调试日志中看到以下内容(这是来自auth服务器的响应的一部分):

2013/10/14 17:46:42 [debug] 31222#0: *4 http proxy header: "Content-Type: text/html; charset=utf-8"    
2013/10/14 17:46:42 [debug] 31222#0: *4 http proxy header: "Date: Mon, 14 Oct 2013 17:46:42 GMT"       
2013/10/14 17:46:42 [debug] 31222#0: *4 http proxy header: "Server: nginx/1.2.5"                       
2013/10/14 17:46:42 [debug] 31222#0: *4 http proxy header: "Vary: Cookie"                     
2013/10/14 17:46:42 [debug] 31222#0: *4 http proxy header: "x-user: 1"

我想取x-user标头并将其传递给后端服务器.

我已经在location /块中尝试了各种组合,但它们都没有工作.例如

• proxy_set_header x-user $upstream_http_x_user;
• proxy_set_header x-user $http_x_user;
• proxy_set_header x-user $sent_http_x_user;
• proxy_pass_header x-user

这些似乎都不起作用.我有什么想法可以完成这项任务？请注意,它是auth代理,它设置我想传递给后端服务器的标头,

Answer 1

Woop, figured it out. The correct NGINX config looks like this:

location / {                                               
    auth_request      /_auth;                             
    auth_request_set $user $upstream_http_x_user;       
    proxy_set_header x-user $user;                
    proxy_pass       http://backend_server;                
}                                                          

The issue is that you cannot assign the header directly into another header, you have to use auth_request_set to set the header into a variable and then assign that variable to a header.