The project Prometheus Temperature exporter for raspberry pi is no longer be maintained and will be superseded by https://github.com/lukibahr/raspbi-ds18b20-exporter.
Prometheus Endpoint, written in Python to read 1wire sensor and exposes temperature values as a prometheus metric.
Depending on the type of the sensor, you'll have to wire the sensor with a 4.7K Ohm resistor. The following sample wiring might help:
Make sure, you have the required kernel modules loaded. To do so, follow these steps:
$ sudo modprobe w1-gpio
$ sudo modprobe w1-therm
$ sudo echo "dtoverlay=w1-gpio" >> /boot/config.txt #to enable 1-wire config and persist after reboot
$ lsmod #check if modules are loaded correctly
$ sudo rebootAfter your pi has been rebooted, check if you can list the attached 1-wire devices
$ ls /sys/bus/w1/devices/Have a look at the sourcecode for details. Generally, you'll have to download and import the required python libraries. Refer to the official documentation on how to implement a prometheus exporter: https://github.com/prometheus/client_python.
I've used hypriot os with a RaspberryPi 3B+. It works on a Raspberry Pi 2 too, although docker builds might take some time, so be calm to your Pi.
You can run the exporter either via python itself or in a docker container. The required commands for running it via python are also in the supplied Makefile. For docker use:
$ docker build -t raspbi-temperature-exporter:arm32v6 -f Dockerfile .
$ docker run -it -e EXPORTER_PORT=9103 -p 9103:9103 raspbi-temperature-exporter:arm32v6You can also download it from docker hub via docker pull lukasbahr/raspbi-temperature-exporter:arm32v6
- [DONE] Add CI/CD Support
- [OPEN] Add unit tests
- [OPEN] use buildx to create the proper image
- [OPEN] Add health metric, error metric, scrape interval, general information about exporter etc.
- The wiring image originates from: http://www.circuitbasics.com/raspberry-pi-ds18b20-temperature-sensor-tutorial/