Save the data detected by the openplotter to avoid losing it at every reboot

[e-sailing]

3 - Attempt with influx + grafena (As done by PaddyB http://forum.openmarine.net/showthread.php?tid=1420)
grafena does not start, I think for the conflict of the door (it uses 3000 equal to signalK) and I could not change it.
(I followed these instructions: https://stackoverflow.com/questions/2830...afana-port)

grafana change port /etc/grafana/grafana.ini

'
#################################### Server ####################################
[server]
# Protocol (http, https, socket)
;protocol = http

# The ip address to bind to, empty will bind to all interfaces
;http_addr =

# The http port  to use
http_port = 3001
'