Issue Grafana error when Plesk not running on 8443/8880

Nicson

New Pleskian
Server operating system version
Debian 6.1.140-1 x86_64
Plesk version and microupdate number
Version 18.0.70
Monitoring & Grafana Extension doesnt work when a different Plesk Interface Port is used.
After hours of try & debug...
When the Server use 8443/8880 Ports Grafana works fine.
If the Ports where changed like (How to change the ports for the Plesk interface on Linux? - Support Cases from Plesk Knowledge Base), i get following error:

Screenshot 2025-06-16 144211.png
Screenshot 2025-06-16 144336.png
After return setup to 8443/8880 Ports it works again.
I found /etc/grafana/grafana.ini but dont know how to fix the Problem, theres another Port "3030" defined...

Maybe someone knows a solution?
 
Thanks for the update. I would conclude that the default port is required for the proper operation of Grafana. I have tested that and although I am unable to locate any reference to port 8880, I wasn't able to make it work with a custom port. Of course, I might be mistaken, and it might be worth it to double-check with our support engineers.
 
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