This is something I wrote up after playing with the context options. I've filed a PR with some of this added to the Node-RED documentation but thought I'd release it here also. I hope people find it useful. Paul A guide to understanding 'Persistent Context' Prior to Node-RED v0.19.0, data could …

If you want to get rid of a context variable you can use the change node to delete it.

Also make sure you force a full refresh of the browser

[image] zenofmud: If you want to get rid of a context variable you can use the change node to delete it. Yup, that seems to be the workaround. Had to go to each flow and inject a change node to delete the orphaned persistent flow contexts.

[image] rsuplido: I guess there should be some type of persistent context garbage collection that happens during deploy. err... persistent context means just that..... If you have used a variable to set something into context we have no way of knowing in advance if you are going to refer to …

[image] dceejay: err... persistent context means just that..... If you have used a variable to set something into context we have no way of knowing in advance if you are going to refer to it again or not. I do see your point — but if they are indeed contexts that were made in error, it makes…

I'm sure it will all evolve/improve over time :slight_smile:

Thank for this guide @zenofmud , helped me understand mutch better. Still have some problems setting up. Running version 0.19.5. Stoped nodered using ssh command: sudo node-red-stop Changed the /root/.node-red/settings.js file to include: [settings] Start node red again with ssh node-red-sta…

Apart from you context issues, what is your need to run as root? If you haven’t got one it isn’t recommended.

No need to run as root. Just used sudo to shut down node red to be sure it was shut down, dont use sudo when starting it again. Probaly no need using sudo when shutting down but i tought it could not hurt :slight_smile: Still new to all this and will not use it in the Future.

But it is picking up settings file etc under /root/ and your user directory is set to /root/.node-red in your screenshot...

Node-RED

Node-RED Forum

A guide to understanding 'Persistent Context'

General

dceejay 1 November 2018 17:37 60

I'm sure it will all evolve/improve over time

Error or bug with global get when undefined

Topic		Replies	Views
Problems understanding and implementing Persistent Storage General	42	1300	31 August 2023
🎉 Node-RED 0.19 released News	57	4384	10 January 2019
:question: DISCUSSION: Should nodes save/restore their own context? General	95	4803	19 August 2020
Questions about context saving and something more General	13	348	7 January 2024
Node-red won't start General	63	3663	23 November 2020

Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.

A guide to understanding 'Persistent Context'

Related topics