看下error.log日志，先确认下是哪个URL引发了重定向。

http {
    limit_conn_zone $binary_remote_addr zone=one:10m;
    include       mime.types;
    default_type  application/octet-stream;
    server_names_hash_bucket_size 256;
    client_header_buffer_size 256k;
    large_client_header_buffers 4 256k;
    client_max_body_size 50M;
    client_body_buffer_size   256k;
    client_header_timeout     3m;
    client_body_timeout       3m;
    send_timeout              3m;
    sendfile        on;
    tcp_nopush     on;
    fastcgi_intercept_errors on;
    keepalive_timeout  130;
    tcp_nodelay  on;
    gzip  off;
    server_tokens off;

    expires 8h;
    server {
        listen       80;
        server_name  www.test.com;
        location / {
            proxy_pass http://192.168.11.10;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            client_max_body_size 50m;
            client_body_buffer_size 256k;
            proxy_connect_timeout 80;
            proxy_buffer_size 256k;
            proxy_buffers 4 256k;
            proxy_busy_buffers_size 256k;
            proxy_temp_file_write_size 256k;
            proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
            proxy_max_temp_file_size 128m;
        }
     }
}