I want to host node-red 24/7 on Raspberry Pi. Something was running it constantly, then, the power had gone out, then it came back. But, then, the data was not coming. I want the node-red to run constantly (at least when the raspberry pi is running). I tried making an .SH file to make it constantly run, here is the code:
node-red
that is the command prompt line to run node-red.
That did not work, is there something that I can do about this?
What you're looking for is a process manager, there are many process managers available each with their own features.
Natively many linux distributions support this functionality via a system called systemd also called an init system.
Docker as a system is also an option but this may be excessive for your use-case.
Some popular process manager applications are:
Additional reading:
The node-red install instructions for raspberry pi cover the in the running as a service section
https://nodered.org/docs/getting-started/raspberrypi#running-as-a-service
It is most likely that you had used node-red-start to start Node-RED as a service, but you had not completed the latter step to enable the service to start on boot.
Autostart on boot
If you want Node-RED to run when the Pi is turned on, or re-booted, you can enable the service to autostart by running the command:
sudo systemctl enable nodered.serviceTo disable the service, run the command:
sudo systemctl disable nodered.service