rpertusio

Members
 View Profile  See their activity

  • Posts

    3

  • Joined

  • Last visited

 Content Type 

Posts posted by rpertusio

    [SUPPORT] cups DOCKER REPOSITORY

    in Docker Containers

    Posted

    43 minutes ago, tcj said:

    The symlink-solution works well ...

     

    ... until the device number changes (due to printer on/off) while cups-docker is running 😞

     

    Can you confirm you followed all the steps?

     

    I powered OFF and ON my printer.  The device number changed.  And it picked up within seconds:

     

    image.thumb.png.833e9f68fbb1a5b8d4a50e1e46dc0262.png

    [SUPPORT] cups DOCKER REPOSITORY

    in Docker Containers

    Posted · Edited by rpertusio

    On 1/8/2022 at 7:04 AM, Rick_Sanchez said:

    I've got this working when using the path: 

    /dev/bus/usb/001/002

    But, after creating a symlink (in case the Bus and Device numbers are changed after a restart) the print jobs are not sent. The symlink is 

    /dev/printer1

    Any ideas on how to fix this?

     

    Rick_Sanchez,

     

    cups Docker container -> Edit -> Change from 'Basic View' to 'Advanced View' (upper right toggle)

    Under "Extra Parameters" append this to the end:  --device=$(readlink -f /dev/printer1)

    Make sure "Printer:" field is /dev/printer1

     

     

    ========== Long Version (SymLink and docker config) ============

    Pre-Req:

    * Install cups docker app

    * Plug your USB printer in

     

    In Unraid Terminal window:

    1. Run lsusb to find your USB printer: 
      lsusb

      Find your device from the output. Example: Bus 002 Device 008: ID 04f9:0045 Brother Industries, Ltd HL-2240 series
      Remember the Bus(002), Device(008), and vendor/product ID(04f9:0045) for later:
       

    2. Run udevadm to find the serial number of your printer (replacing /002/008 with the Bus/Device number you collected above): 

      udevadm info -a -n /dev/bus/usb/002/008 | grep '{serial}' | head -n1

      Example: ATTR{serial}=="ABC123456"
       

    3. Create a file with the nano editor. (Rules are run in order. 99 would be run 'last', which is why the 99 is in the filename) 

      nano /etc/udev/rules.d/99-usb-rules.rules


      In the editor, add the following lines. (First 2 lines are just comments, optional.)
      Replace the Vendor, Product, and Serial#.
      Use any name helpful to you for the Symlink. The result would be /dev/myprinter001 if you use my example: 

      # This file maps a Brother Printer (Vendor:Product / Serial) to /dev/myprinter001

# Brother Printer / 04f9:0045 Brother Industries, Ltd HL-2240 series / Serial ABC123456

SUBSYSTEM=="usb", ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="0045", ATTRS{serial}=="ABC123456", SYMLINK+="myprinter001"

      Close & save the file: [Ctrl+X] -> [y]es -> [enter]
       

    4. The file above gets wiped on boot, so we need to copy it every boot.
      Create a /boot/config/rules.d folder and copy the Rules file you made 

      mkdir /boot/config/rules.d/

cp /etc/udev/rules.d/99-usb-rules.rules /boot/config/rules.d/99-usb-rules.rules

       

    5. Now, edit the /boot/config/go script, which:
      * Copies the rules file back out to /etc/udev/rules.d/
      * Changes permissions (likely not necessary, but for completeness it's here)
      * Reload the rules & reset the USB subsystem (often because the rules sometimes don't load in time, so we have to trigger again)
        

      nano /boot/config/go


      And the file contents should be: 

      # This sets the USB friendly name mapping rule to apply each boot

cp /boot/config/rules.d/99-usb-rules.rules /etc/udev/rules.d/99-usb-rules.rules

chmod 644 /etc/udev/rules.d/99-usb-rules.rules

udevadm control --reload-rules

udevadm trigger --attr-match=subsystem=usb

      Close & save the file: [Ctrl+X] -> [y]es -> [enter]
       

    6. Reboot the unraid system 

      shutdown -r now


       

    7. On bootup, open a Terminal and check if your device is present: 

      ls -l /dev/myprinter001

       

    To get the cups Docker container working:

    • cups container -> Edit -> Change from 'Basic View' to 'Advanced View' (upper right toggle)
    • Under "Extra Parameters" append this to the end:  --device=$(readlink -f /dev/myprinter001)
    • Make sure "Printer:" field is /dev/myprinter001
    • (Re)Start the cups Docker container
    • Within cups WebGUI, add the printer
    • Like 2
    • Thanks 1