[Unit]
Description=Node Exporter

[Service]
ExecStartPre=/bin/bash -c 'test -f /usr/local/bin/node_exporter || curl -sSLf https://github.com/prometheus/node_exporter/releases/download/v1.8.2/node_exporter-1.8.2.linux-$(arch | sed -e "s/x86_64/amd64/" -e "s/aarch64/arm64/").tar.gz | tar xvz -C /usr/local/bin/ --strip-components=1 --wildcards "*/node_exporter"'
Environment=OPTIONS=--web.listen-address=127.0.0.1:9100
EnvironmentFile=-/etc/default/node_exporter
ExecStart=/usr/local/bin/node_exporter $OPTIONS

[Install]
WantedBy=multi-user.target