I configured my gitlab instance with an external nginx server according this documentation and following nginx configuration. All is working fine, but when i try to change some profile settings in the UI I get an connection reset.
The problem only occurs on multipart form POST/PUT operations.
The funny thing is, that there are no log entries in any gitlab log files, so i think there is a problem in the nginx configuration somewhere.
Please when someone has any idea on how to further analyse the problem.
Thanks
The problem was the MTU setting for the TCP-IP Stack on my windows machine. I switched from 1500 to 1300 and now all is working fine again.