DotnetCore PostAddFile returns 504 after a while of usage
I have a strange error. I have deployed Umbraco 11.3.1 to a Linux server with Dokku and Docker. It runs .NET Core. I have set up a volume of the /umbraco/Data and the /media directories. In the beginning, it works as planned - I can upload files to the media dir and I can see the output in the volume dir outside Docker. But after hours of usage, the /umbraco/backoffice/umbracoapi/media/PostAddFile endpoint fails with a 504. The upload bar runs as it usually do, but when it reach 100% and after a minute or so, this weird HTML error appears.
That is a Nginx error as far as I know. Blue screen.
In my nginx error log, I see this:
2023/05/18 11:53:48 [error] 8165#8165: *30932 upstream timed out (110: Unknown error) while reading response header from upstream, client: 93.165.xxx.xxx, server: mydomain.dk, request: "POST /umbraco/backoffice/umbracoapi/media/PostAddFile HTTP/2.0", upstream: "http://172.17.0.2:4000/umbraco/backoffice/umbracoapi/media/PostAddFile", host: "mydomain.dk", referrer: "https://mydomain.dk/umbraco"
If I rebuild the Docker container and works again for a while.
I can't figure out if this is a docker, Umbraco, or an nginx error. Please help me in the right direction, or where/how to debug :)
/Peter
I got an answer on Umbraco forum:
It seems to be fixed with 11.4 :)
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