node_exporter_installer.sh

#!/bin/bash
NODE_EXPORTER_VERSION="0.18.0"
wget https://github.com/prometheus/node_exporter/releases/download/v${NODE_EXPORTER_VERSION}/node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64.tar.gz
tar -xzvf node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64.tar.gz
cd node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64
sudo cp node_exporter /usr/local/bin

# create user
sudo useradd --no-create-home --shell /bin/false node_exporter

sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter

echo '[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target
[Service]
User=node_exporter
Group=node_exporter
Type=simple
ExecStart=/usr/local/bin/node_exporter --web.listen-address=:9500
[Install]
WantedBy=multi-user.target' > temp_node_exp

sudo cp temp_node_exp  /etc/systemd/system/node_exporter.service

# enable node_exporter in systemctl
sudo systemctl daemon-reload
sudo systemctl start node_exporter
sudo systemctl enable node_exporter


echo "Setup complete.
Add the following lines to /etc/prometheus/prometheus.yml:
sudo systemctl restart prometheus
"