# How to set up nginx for file uploading **URL:** \ **Category:** NGINX\ **Created:** [December 11, 2015, 1:14pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623 "2015-12-11T13:14:30Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Post date:** [December 11, 2015, 1:14pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/1 "2015-12-11T13:14:30Z")
Hi everyone! I am having some trouble setting up nginx for file uploading. I am using nginx as a proxy in front of my nodejs server (that has hapi as server framework). Here is the nginx.conf file’s portion for this server: [http://dpaste.com/0VJKE5K](http://dpaste.com/0VJKE5K) The problem is that I get > No ‘Access-Control-Allow-Origin’ header is present on the requested > resource. Origin ‘[https://test.project.com](https://test.project.com)’ is therefore not allowed > access. immediately after sending the pre-flight request when uploading the file. Can anyone please help me? Thanks in advance. ---
**Author:** ![Vlad\_Fulgeanu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/eb9ed0/32.png) [@Vlad\_Fulgeanu](https://www.ruby-forum.com/u/Vlad_Fulgeanu)\ **Post date:** [December 11, 2015, 3:28pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/2 "2015-12-11T15:28:16Z")
Your config doesn’t appear to add any Access-Control-Allow-Origin header, so unless your backend is adding this, you will need to add an appropriate Access-Control-Allow-Origin header. ---
**Author:** ![Vlad\_Fulgeanu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/eb9ed0/32.png) [@Vlad\_Fulgeanu](https://www.ruby-forum.com/u/Vlad_Fulgeanu)\ **Post date:** [December 11, 2015, 3:51pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/3 "2015-12-11T15:51:03Z")
I added these in “location /upload/preview”: add\_header ‘Access-Control-Allow-Origin’ ‘[https://test.project.com](https://test.project.com)’; > add\_header ‘Access-Control-Allow-Headers’ ‘Authorization, Content-Type, > X-Requested-With, Cache-Control, If-None-Match’; And now it gives me: No ‘Access-Control-Allow-Origin’ header is present on the requested > resource. Origin ‘[https://test.project.com](https://test.project.com)’ is therefore not allowed > access. The response had HTTP status code 503. As a response to the actual request (not the pre-flight) On Fri, Dec 11, 2015 at 4:27 PM, Richard S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![Vlad\_Fulgeanu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/eb9ed0/32.png) [@Vlad\_Fulgeanu](https://www.ruby-forum.com/u/Vlad_Fulgeanu)\ **Post date:** [December 11, 2015, 5:08pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/4 "2015-12-11T17:08:10Z")
"The response had HTTP status code 503. " It looks your backend is failing, as it’s returning a HTTP/503 error and likely not including the correct headers. You should look into why your backed is returning a 503 as this doesn’t seem like an nginx issue any more. ---
**Author:** ![Vlad\_Fulgeanu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/eb9ed0/32.png) [@Vlad\_Fulgeanu](https://www.ruby-forum.com/u/Vlad_Fulgeanu)\ **Post date:** [December 12, 2015, 6:11pm UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/5 "2015-12-12T18:11:48Z")
The problem is that I have tested the application locally (without nginx) and the uploading works just fine. That’s why I think it has something to do with de way nginx is configured. On Fri, Dec 11, 2015 at 6:07 PM, Richard S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![Vlad\_Fulgeanu](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/eb9ed0/32.png) [@Vlad\_Fulgeanu](https://www.ruby-forum.com/u/Vlad_Fulgeanu)\ **Post date:** [December 14, 2015, 10:44am UTC](https://www.ruby-forum.com/t/how-to-set-up-nginx-for-file-uploading/243623/6 "2015-12-14T10:44:16Z")
I managed to make some changes (I was using another config file, although “nginx -t” was showing the correct file, witch is very strange) and I don’t get HTTP 503 back. The config file now looks like this: [http://dpaste.com/18J54VV](http://dpaste.com/18J54VV) The problem I have now is that I get > 500 (Internal Server Error) as a response to the POST request. I can see that the files are actually uploaded to “/home/project/previews/uploaded-files”, but for whatever reason they don’t get passed to the backend server, because the backend doesn’t log anything (though it says that it’s an Internal Server Error).