Udev rules not loaded after restart

[toussii]

BurmillaOS Version: (ros os version) v2.0.0-beta6 Where are you running BurmillaOS? (docker-machine, AWS, GCE, baremetal, etc.) baremetal Which processor architecture you are using? amd64 Do you use some extra hardware? (GPU, etc)? no Which console you use (default, ubuntu, centos, etc..) default Do you use some service(s) which are not enabled by default? no Have you installed some extra tools to console? no Do you use some other customizations? no

I try to change the udev rules so created the following config.yml:

cloud-config

bootcmd:

• [ touch, /etc/udev/rules.d/99-usb-serial.rules ]
• echo "SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="ttyUSB-RFX433"" > /etc/udev/rules.d/99-usb-serial.rules

This creates a symlink for this specific usb device. To reload these changes I run the following command: sudo system-docker exec -it udev udevadm trigger

The problem is these changes are not saved and I need to run this command if the machine reboots. Is it possible to automate this?

[olljanat]

Try with https://burmillaos.org/docs/configuration/advanced/write-files/

[toussii]

Yeah did try that but it didn't work (with and without sudo):

cloud-config

bootcmd:

• [ touch, /etc/udev/rules.d/99-usb-serial.rules ]
• echo "SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="ttyUSB-RFX433"" > /etc/udev/rules.d/99-usb-serial.rules

write_files:

• path: /etc/rc.local permissions: "0755" owner: root content: |

  !/bin/bash

  system-docker exec -it udev udevadm trigger

[olljanat]

I mean that instead of whole bootcmd thing you provably should use write file for that file.

If it is not enough then maybe you need restart udev container in rc.local. Sudo is not needed on those

[toussii]

that is also not working :(

`#cloud-config write_files:

• path: /etc/udev/rules.d/99-usb-serial.rules permissions: "0755" owner: root content: | SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="ttyUSB-RFX433"
• path: /etc/rc.local permissions: "0755" owner: root content: |

  !/bin/bash

  system-docker exec -it udev udevadm trigger`

[olljanat]

Perhaps it just run too early. Try add wait-for-docker to rc.local before that udev command.

[toussii]

Resolved the issue did run some logging and found that I need to remove the -i option because script is not a interactive terminal. Also the rule needs to be created inside the system-docker udev container. This is the working example:

cloud-config

write_files:

• path: /etc/udev/rules.d/99-usb-serial.rules container: udev permissions: "0755" owner: root content: | SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", SYMLINK+="ttyUSB-FTDI"
• path: /etc/rc.local permissions: "0755" owner: root content: |

  !/bin/bash

  system-docker exec -t udev udevadm trigger > /var/log/boot/udev.log 2>&1