added logging

.env.example

@@ -8,12 +8,16 @@ NETATMO_REFRESH_TOKEN=
 # Rotated OAuth tokens are persisted here with mode 0600.
 NETATMO_TOKEN_FILE=/var/lib/rrd/netatmo_tokens.json
 # Must exactly match a redirect URI configured for the Netatmo application.
-NETATMO_REDIRECT_URI=http://www.suy.nl
+NETATMO_REDIRECT_URI=http://www.suy.nl/w
 # Alternatively, useful for a short-lived test (refresh credentials are preferred):
 # NETATMO_ACCESS_TOKEN=
 # NETATMO_DEVICE_ID=
 
 RRD_FOLDER=/var/lib/rrd
+LOG_FILE=/var/lib/rrd/netatmo_service.log
+LOG_LEVEL=INFO
+LOG_MAX_BYTES=5242880
+LOG_BACKUP_COUNT=5
 POLL_INTERVAL=600
 START_COLLECTOR=true