Dynamic parameters inside nodes

General
1

Hi

Is there any way to declare and use a dynamic parameter inside node's settings without injecting everything to it ?
Most of the values there are static , only the Hostname in my case needs changing.

I have about 70 instances of the exact same flow that only has one variable that needs changing inside these nodes.

2

In this case, I would probably use the new link call and only have one flow that is called from 70 places (like a subroutine) and pass the variable part in the msg.

Alternatively, package this identical flow into a subflow & then create 70 instances each with their own env variables (or pass variable in the subflow)

3

When does it need changing - actually dynamically during runtime ? or is it "configurable" before deploy (and then static) ? If the later then you can also use environment variables to set it outside of Node-RED and then change it for that machine etc.

4

I have thermostat function through snmp on a IOT device that can read temperature and toggle a relay output. There is also time scheduling enabled in this. So, its a matter of reading and setting a few parameters through snmp on it.

I made one running instance and I need about 70 almost ideltical ones, apart from assigning diferent ips (and dashboard group outputs)

Since going copy/paste of it and manually changing each ip might take little a while.
I am looking for a easy way to multiply this flow.
Subflow method doesnt really work since i have more than one input/output enabled in this flow.

For now the only solution I got is to generate different flows by modifing the export content on the current flow.

5

Hi there, I don't think this is about creating custom nodes though is it? If not, could you please change the catgory for this post?

6

Dont really know which category this fits actually. Any suggestion ?

7

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