cd /tmp/
curl -s https://api.github.com/repos/prometheus/node_exporter/releases/latest | grep browser_download_url|grep linux-amd64|cut -d '"' -f 4|wget -qi -

tar -xvf node_exporter*.tar.gz
cd node_exporter*/
cp node_exporter /usr/local/bin
cd
node_exporter --version
useradd node_exporter
tee /etc/systemd/system/node_exporter.service <<EOF
[Unit]
Description=Node Exporter
Wants=network-online.target
After=network-online.target

[Service]
User=node_exporter
ExecStart=/usr/local/bin/node_exporter

[Install]
WantedBy=default.target
EOF

systemctl daemon-reload
systemctl start node_exporter
systemctl enable node_exporter