Making USB usable in LXC-container

New way

Goal is to change owner and group of files representing USB-device

In node's CLI

  1. Create udev rule-file

    nano /etc/udev/rules.d/usb-ITead_Sonoff_Zigbee.rules

  2. Add row

    SUBSYSTEM=="tty", ATTRS{removable}=="removable", OWNER="100000", GROUP="100000"
  • "tty" refers to USB
  • "removable" distinguish removable devices

  1. Reload udev rules

    udevadm control --reload

  2. Unplug and plug USB device or retrigger rule

    udevadm trigger

  3. Check owner of file...

    ls -al /dev/ttyUSB0

  4. Result is something like ...

    crw-rw---- 1 100000 100000 188, 0 Nov 7 18:18 /dev/ttyUSB0

  5. Restart container - I used browser UI

Useful udev commands

  • Debugging

    udevadm test $(udevadm info -q path -n /dev/ttyUSB0)

  • Check attributes

    udevadm info /dev/ttyUSB0

  • Check details of path

    udevadm info -a /dev/bus/usb/001/022

  • 001 and 002 you find with 

    lsusb

Making USB usable in LXC-container (OLD)

Problem of this approach is that you need to CHOWN file every time USB device is removed

In node's CLI

  1. Change owner to user 100000 and group 100000. This means that in container root owns file. If not changed owner in container is "nobody" and program running in container cannot use device.

    chown 100000:100000 /dev/ttyUSB0

  2. Result is something like ...

    crw-rw---- 1 100000 100000 188, 0 Nov 7 18:18 /dev/ttyUSB0

Making Sonoff ZBDongle-E a router

I used https://www.vandyke.com/products/securecrt/ for flashing...

In general these were good instructions...

https://sonoff.tech/wp-content/uploads/2022/11/SONOFF-Zigbee-3.0-USB-dongle-plus-firmware-flashing-.pdf

Only thing I would clarify

"Keep pressing the Boot button, restart the device..." to "Keep pressing the Boot button and press restart button at the same time."