Is a flows_cred.json created on one node-RED instance valid for a different node-RED instance too?

General
1

I have some node-RED flow that I create via a Docker container, e.g., node-red-instance-1. Now I can copy the respective flows.json and flows_cred.json file from node-red-instance-1's volume mount and I wish to spin up another container e.g., node-red-instance-2 and mount the respective JSON files to the volume of the container.

Will the node-red-instance-2 be able to decrypt the flows_cred.json file and fill out the respective credentials in the flow again?

This is with an assumption that I have not set any particular key value in the settings.js.

2

If you haven't set your own credentialSecret in the settings file, then both instances will have generated their own key and stored it in .config.runtime.json file.

Meaning instance-2 will have a different key to instance-1 and it will not be able to decrypt.

You could copy the value from .config.runtime.json (stored as _credentialSecret) into instance-2's settings.js file.

Or just set a proper value in all of your settings file.