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edorgeville/setting-and-accessing-environment-variables-in-node-red.md

Last active August 21, 2024 22:40
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Setting and accessing environment variables in node-red
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setting-and-accessing-environment-variables-in-node-red.md

Setting and accessing environment variables in node-red

Setting

  • echo "UUID=12345" > ~/env
  • sudo nano /lib/systemd/system/nodered.service
  • Add EnvironmentFile=/home/pi/env
  • sudo systemctl daemon-reload
  • sudo systemctl restart nodered

Accessing

  • In node-red, create a MQTT-in node
  • In the topic field, write $(UUID)
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