I found https://github.com/hassio-addons/addon-nut for running NUT on hassio.
I saw that I can run a NUT server with this on my Pi.
But it is necessary that I give the NUT server the name “qnapups” with the username “admin” and the password “12345”, because this is what my QNAP NAS is expecting.
I didn’t found something in the configuration to set the name of the NUT server. I only can set the “mode” to “netserver”, but something like " remote_ups_name" is not available when in server mode.
Can someone help me here?