Configure RPI CPU Temperature Trip Points

Raspberry Pi cluster project

Purpose

This playbook configures the CPU temperature trip points for the Raspberry Pi PoE Hat fan.

Requirements

community.general

Role Variables

Available variables are listed below, along with default values (see defaults/main.yml)

# variables for raspbian/debian distro
poe_fan_temp0: 75000 # example 55000 = 55'C
poe_fan_temp1: 78000
poe_fan_temp2: 80000
poe_fan_temp3: 81000

# variables for ubuntu distros
trip_point_temp3: 75000
trip_point_hyst3: 5000 # hysterisis value determines the temp when fan rpm changes down a state
trip_point_temp2: 78000
trip_point_hyst2: 2000
trip_point_temp1: 80000
trip_point_hyst1: 2000
trip_point_temp0: 81000
trip_point_hyst0: 5000

# rpi's will require reboot for changes to take effect. False prevents role from rebooting rpi's
reboot_var: true

Dependencies

None

Example Playbook

---
- name: set poe hat fan trip points on rpi cluster hosts
  hosts: all
  become: true
  gather_facts: true
   
  roles:
    - rpi_poe_hat_conf

Author Information

This role was created in 2022 by Lee Woodhouse