intermittent log messages "QNetworkDiskCache::prepare() unable to open temporary file"

[w0pr]

I run sourcepole/qwc-qgis-server:3.28-plugins image from the docker services.

I am getting intermittent "QNetworkDiskCache::prepare() unable to open temporary file", especially when running config-generator.

qwc-docker-qwc-qgis-server-1 | QNetworkDiskCache::prepare() unable to open temporary file

What might be the source of that? Do I need to configure the cache folder somehow? I did not specify a host volume for it.

I have set SERVICE_UID: 1003 & SERVICE_GID: 1003 in docker-compose.yml, is there some permission issue?

I also opened same issue on qwc2-demo-app, close as appropriate.

[tpo]

Do you see any functional problems that are caused by this or is it "just a log entry"?

I have set SERVICE_UID: 1003 & SERVICE_GID: 1003 in docker-compose.yml, is there some permission issue?

SERVICE_UID and SERVICE_GID should be set to the user that owns the checkd out files from the qwc-docker repo. is that the case?

[w0pr]

Do you see any functional problems that are caused by this or is it "just a log entry"?

No, it is "just a log entry". However, I have no way of comparing performance, if this pointed to possibly ineffective cache.

It only seems to happen when generating new service config:

I have set SERVICE_UID: 1003 & SERVICE_GID: 1003 in docker-compose.yml, is there some permission issue?

SERVICE_UID and SERVICE_GID should be set to the user that owns the checkd out files from the qwc-docker repo. is that the case?

Yes.
uid=1003(qgis) gid=1003(qgis) groups=1003(qgis),4(adm),27(sudo),999(docker)

[manisandro]

Fixed by d6a40e4