Share Variables across multiple RPi

#1

What would be your ideal approach to share global variables across multiple RPi's each with one node-red instance?

Would you take the approach of a MySQL database where you could write / read the variables?

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#2

I'd just use MQTT and persistent storage on each Pi

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#3

+1 for MQTT.

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#4

+2 for MQTT

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#5

+3 for MQTT.

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#6

If your unfamiliar with MQTT then this guide seems to be a good read;
https://www.hivemq.com/blog/mqtt-essentials-part-1-introducing-mqtt/

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#7

thanks i will have a look at the guide and will be using mqtt

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