node_exporter_install.sh

echo -e "Creating group prometheus \n"
groupadd --system prometheus

echo -e "Creating user prometheus \n"
useradd -s /sbin/nologin --system -g prometheus prometheus

wget https://github.com/prometheus/node_exporter/releases/download/v1.5.0/node_exporter-1.5.0.linux-amd64.tar.gz -P /tmp

echo -e "Extracting node exporter \n"
tar xvf /tmp/node_exporter-*linux-amd64.tar.gz -C /tmp/
cd /tmp/node_exporter*/

echo -e "Moving node exporter config in /usr/local/bin/ \n"
cp /tmp/node_exporter*/node_exporter /usr/local/bin

echo -e "Creating node_exporter.service \n"

tee /etc/systemd/system/node_exporter.service<<EOF
[Unit]
Description=Prometheus
Documentation=https://github.com/prometheus/node_exporter
Wants=network-online.target
After=network-online.target
[Service]
Type=simple
User=prometheus
Group=prometheus
ExecReload=/bin/kill -HUP $MAINPID
ExecStart=/usr/local/bin/node_exporter
[Install]
WantedBy=multi-user.target
EOF

echo -e "Reloading daemons"
systemctl daemon-reload
echo -e "Starting node service \n"
systemctl start node_exporter
echo -e "Enabling node service \n"
systemctl enable node_exporter

echo -e "Waiting for status \n"
sleep 2
systemctl status node_exporter

echo "End of configuration"