Hi, I have experienced an issue today with my Grafana instance.
I have a datasource configured on InfluxDB, and today it was entirely bugged in the Grafana app (somehow missing, and somehow still there, Schrodinger's datasource)
After looking at logs, I found the root cause: an update on the influx's grafana plugin.
The application tries to update its plugins on start-up which seems to be located in /app/code/data/plugins-bundled/, which is read-only. Therefore it could not finish the update and never loads the plugin.
Updating plugin pluginId=influxdb from=13.1.3 to=13.1.6
Failed to install plugin pluginId=influxdb error="unlinkat /app/code/data/plugins-bundled/influxdb: read-only file system"
plugin process exited logger=plugin.influxdb
This only happened now because there was an update published yesterday on the Cloudron package, which made the container restart.
Adding this to /app/data/custom.ini "solves" the problem:
[plugins]
preinstall_auto_update = false
But correct fixing would be putting plugins somewhere in /app/data or make their directory writable by the update process.

