check process grafana with pidfile /var/run/grafana/grafana-server.pid
  group iot
  start program = "/bin/systemctl start grafana-server"
  stop program = "/bin/systemctl stop grafana-server"
  if failed port 2942 protocol http
    with timeout 10 seconds
    with retry 2
    then restart
  if 5 restarts within 5 cycles then timeout