Node-RED Server migration
Node-RED migration to go from one version or server to another one with keeping the same flows.
Table of Contents
Missing nodes
Copy the whole node_modules directory from the old environment to the new one.
Flow credentials cannot be decrypted
The credentialsSecret value is used to encrypt/decrypt the credentials you have entered into any of the nodes when you set them up after dragging them onto the canvas.
Credentials are stored a file called flows_creds.json along side the flows.json
It is not used as part of any communication with any remote system.
If you do not add a credentialsSecret to your settings.js then Node-RED will generate one and store it in a file called .config.runtime.json in your userDir (~/,node-red). Node-RED will then show a warning at startup about this.
If you then add a credentialsSecret to settings.js and restart Node-RED, the next time you do a deploy it will use the old generated secret to decrypt the current credentials file and re-encrypt it using the newly added credentialSecret. You can only do this automatic migration once. This will then remove the warning on later restarts.
Create a login user
<< See also my other Node-RED pages