Install and run PiGPIOd daemon on Docker image

General
1

I am running Node-Red in a Docker image on a Pi within home assistant. Trying to get the GPIO to work and found some documentation
https://nodered.org/docs/getting-started/docker#quick-migration-steps-to-node-red-node-pi-gpiod
where i need to convert from the "node-red-node-pi-gpio" to "node-red-node-pi-gpiod".
(node-red-node-pi-gpio isnt working anyway, with a "nrgpio python command not running" error message.

Read some information on the new PiGPIOd daemon that is part of Raspbian, since i am runnig the node-red image (based on Alpine Linux) i wonderd how to get the deamon installed and running so i dont need another container just for the deamon (and expose port 8888)

The install stops at "make" with command not found

I read this:

and these 2 would make sense:

  • build your binary outside ur container and copy only the shippable binary to ur alpine container
  • build your binary in a normal golang container then copy the binary to a small shippable alpine container

I am new to linux, could this be done on my WSL on windows? or would i need to create a docker container with linux and install it there?
And then, how do i recognise the binary for the piGPIOd deamon?

2

My general recommendation is to install and run the gpiod daemon process on the actual host hardware - as that is where the actual pins are located :-)... and then open up the necessary ports via docker to allow the container to communicate to the daemon.

3

thanks for the reply. I think this is not doable as my OS is the HomeAssistant one and is maintained by them. I dont control any updates. Will investigate further to see what i can do.

Also GPIO for the hardware is removed from the Core components in HA and needs to be transfer to a container (see some posts that others take over the development as a custom integration ) maybe i can use that if it does pwm control. Most solutions are going to use a container to get to the gpio's as that will be the only option.

I could run Debian as the OS, because i am not a Linux expert i dont want that because all updates will be on me and then, by mistake, i might kill the application on top

I want to use it to control a fan when the cpu gets above x, so the fan doesn't spin all the time
Seems a tough one to get working without additional hardware

4

Ah the joy of HA.. yes you'll probably do better asking over on their forum, and yes you will need some extra hardware to power/switch the fan (unless it is really low power (ie more of a stirrer than a fan :slight_smile:

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