PostgreSQL node_exporter

vi /usr/lib/systemd/system/node_exporter.service

[Unit]
Description=node_exporter
Documentation=https://prometheus.io/
After=network.target
 
[Service]
Type=simple
ExecStart=/opt/node_exporter/node_exporter \
--collector.ntp \
--collector.mountstats \
--collector.systemd \
--collector.tcpstat
 
ExecReload=/bin/kill -HUP $MAINPID
Restart=on-failure
 
[Install]
WantedBy=multi-user.target

systemctl start node_exporter
systemctl enable node_exporter