node_exporter/examples/openwrt-init.d/node_exporter

#!/bin/sh /etc/rc.common

START=99

USE_PROCD=1
PROG="/usr/bin/node_exporter"
OPTIONS="--web.listen-address=:9100"

start_service() {
	procd_open_instance
	procd_set_param command "$PROG" "${OPTIONS}"
	procd_close_instance
}