Prometheus Node Exporter on RaspberryPi 4

Install the node exporter software

Get the latest version from the github prometheus project

https://github.com/prometheus/node_exporter/releases

Select the version you need arm6 for raspberrypi 3 or arm7 for Raspberrypi 4

Next you will download the qzip file and extract it, copy to the user path then create a service file to start and run the service

tar -xvf node_exporter-1.8.2.linux-armv7.tar.gz
cd  node_exporter-1.8.2.linux-armv7/
sudo cp node_exporter /usr/local/bin
sudo vi /etc/systemd/system/node_exporter.service

You will next past the following into the service file. 

[Unit]
Description=Node Exporter

[Service]
# Provide a text file location for https://github.com/fahlke/raspberrypi_exporter data with the
# --collector.textfile.directory parameter.
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=multi-user.target

Next need to reload daemon and, enable service, start service and check status

sudo systemctl daemon-reload
sudo systemctl enable node_exporter.service
sudo systemctl start node_exporter.service
sudo systemctl status node_exporter.service