Monitor a USB-connected uninterruptible power supply with "Alpine Linux"

[beigna]

Article: https://www.fedux.org/articles/monitor-a-usb-connected-uninterruptible-power-supply-with-alpine-linux.html

Hello, nice article. I need to ask you about a (maybe) missing info on the "Fix udev-setup" because I can't understand how NUT gives the proper /dev/... path to udev for the rw permissions.

I'm on a fresh alpine install getting the following error:

# upsdrvctl start
Network UPS Tools - UPS driver controller 2.8.0
Network UPS Tools - Megatec/Q1 protocol serial driver 1.58 (2.8.0)

Unable to open /dev/ttyUSB0: Permission denied

  Current user id: nut (101)
Serial port owner: root (0)
Serial port group: dialout (20)
     Mode of port: 0660

# lsusb
Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC

# ls -al /dev/bus/usb/*/*
crw-rw----    1 root     root      189,   3 Dec 21 18:57 /dev/bus/usb/001/004