Grafana TLS handshake error

[lrk]

Hello everyone,

we use icingaweb2, influxdb2 and grafana on the same host.
The Grafana module with iFrame works, but I want to use the Image Renderer.
Here I have the problem that the image is generated correctly
/var/lib/grafana/png/ but it doesn’t show up in Icinga.

I didn’t find any errors in any log except the syslog:
icingatest grafana[108744]: server.go:3214: http: TLS handshake error from 10.1.44.1:46322: remote error: tls: unknown certificate

Thanks for your help!

[lorenz]

Does your Grafana use/enforce TLS?

[lrk]

I found the error, it was due to php8.2
This message destroyed the png file:

I added the highlighted line to the file
/usr/share/icingaweb2/modules/grafana/application/controllers/IcingadbimgController.php