According to node-red cookbook all files in the .node-red subdirectory should be backuped - except files in "node-modules" sub-directory:

Initial steps to setup Grafana on Raspberry3 Debian Strech

 

Logbook for basic setup of InfluxDB 1.02 on Raspberry Pi 3

Data aggregation

Here the first step to automated data aggregation of sensor data ...

Logbook for basic setup of NodeRED on Raspberry Pi 3 

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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