nginx为s3的所有请求提供服务而不是选择性请求

Question

我已经配置了我的nginx，以便在php抛出502错误的情况下从s3获取数据，但即使没有502错误，它也会访问所有请求的数据。

这是我的配置文件

upstream php {
    server unix:/var/run/php5-fpm.sock;
}

server {
    listen          *:80;
    server_name     x.x.x.x;
    root            /data/www/public/;
#    access_log      /var/log/nginx/www.example.com.access.log  main;
    error_log /var/log/nginx/wf_err.log;
    add_header Access-Control-Allow-Origin http://x.x.x.x;


    location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
        expires max;
        log_not_found off;
    }

    location / {
        index       index.php;
        try_files $uri $uri/ /index.php;
    }

    location @static{
        add_header Access-Control-Allow-Origin *;
        rewrite ^ $request_uri;

        rewrite ^/assets/(.*)/(.*)\.css.* /assets/$1/$2.css break;
        rewrite ^/assets/(.*)/(.*)\.js.* /assets/$1/$2.js break;
        rewrite ^/assets/image.*/(.*)\.(.*).* /assets/image/$1.$2 break;
        rewrite ^/assets/fonts/(.*)\.(.*).* /assets/fonts/$1.$2 break;

        rewrite /story/([0-9]+)/([0-9]+)/.* /story/$1/$1_$2.html break;
        rewrite /story/([0-9]+)/.* /story/$1/$1_1.html break;
        proxy_hide_header x-amz-id-2;
        proxy_hide_header x-amz-request-id;
        proxy_pass http://bucket.s3.amazonaws.com;
    }

    location ~ \.php {
        try_files $uri =404;
        fastcgi_pass   php;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include        /etc/nginx/fastcgi_params;
        error_page 502 504 503 @static;
        fastcgi_intercept_errors on;
#        return 502;
    }

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

我使用fastcgi_intercept_errors来捕获php发送的错误。 然后，使用error_page指令，我将位置更改为@static，从s3处理请求。

但我无法理解为什么即使没有错误，所有请求都会转到s3。

感谢。