Prometheus textfile collector script for Mellanox Connect-X temperature (for getting temperature of Mellanox SFP+ Ethernet cards)

prometheus_mellanox_temp.sh

#!/bin/bash
echo '# HELP node_mlx_temperature Mellanox networking card temperature.'
echo '# TYPE node_mlx_temperature gauge'
temperature=`mget_temp -d $1 | tr -d '[[:space:]]'`
echo "node_mlx_temperature{device=\"$1\"} $temperature"

Usage:

• Install Mellanox Firmware Tools (https://www.mellanox.com/products/adapter-software/firmware-tools), installing the deb-package via dpkg should be enough
• Put the above script in /usr/local/bin/prometheus_mellanox_temp.sh (or somewhere else, it isn't that important)
• get your Mellanox device id by running mst status
• add the script to your crontab, including your device id (might need to be root crontab, I'm not sure).
  also, the textfile collector path might be different (e.g. /var/lib/prometheus/node-exporter/
  Example: */5 * * * * /usr/local/bin/prometheus_mellanox_temp.sh "01:00.0" | sponge /var/lib/node_exporter/textfile_collector/prometheus_mellanox_temp.prom

Update: this is completely unnecessary, there's a mellanox exporter in the debian package, you only have to install the firmware tools and then reinstall the prometheus-node-exporter package to enable the timer which runs the exporter

Hi, can you please explain more how did you set it up with node-exporter with your script? To be honest I'm new into this and little bit confused. Thank you and great job 👍

as I said, this thing is pretty much unnecessary as there already is a mellanox exporter included with node exporter (at least on debian).

If you still want to use it, basically the script just outputs the prometheus values to stdout. The cronjob I've posted periodically calls the script and pushes the output to a file that node_exporter reads.