# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=41

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 42

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## [Solar inverter, batteries and offgrid/eps](https://discourse.nodered.org/t/solar-inverter-batteries-and-offgrid-eps/96640)

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**Author:** [@E1cid](https://discourse.nodered.org/u/E1cid)\
**Replies:** 15\
**Last updated:** [27 April 2025 23:00 UTC](https://discourse.nodered.org/t/solar-inverter-batteries-and-offgrid-eps/96640 "2025-04-27T23:00:43Z")

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I am finally going to upgrade my solar and add batteries and and make it a eps/offgrid capable. As you all know it is a minefield of websites and systems. I am interested in any information of the Solax x1 g4 series, s…

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## [Programmatically sync multiple instances to master instance of NR](https://discourse.nodered.org/t/programmatically-sync-multiple-instances-to-master-instance-of-nr/96775)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 3\
**Last updated:** [27 April 2025 17:13 UTC](https://discourse.nodered.org/t/programmatically-sync-multiple-instances-to-master-instance-of-nr/96775 "2025-04-27T17:13:58Z")

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Hi I am working have master client set up for Dev stream. Master has all flows which go to prioduction including flows which users are not allowed to edit. Client has only those flows which user can edit/create on his…

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## [Cant set auth for Node-red at Render](https://discourse.nodered.org/t/cant-set-auth-for-node-red-at-render/96528)

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**Author:** [@yarikshark](https://discourse.nodered.org/u/yarikshark)\
**Replies:** 11\
**Last updated:** [26 April 2025 16:19 UTC](https://discourse.nodered.org/t/cant-set-auth-for-node-red-at-render/96528 "2025-04-26T16:19:29Z")

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Hello everyone, im trying to deploy Node-red on render.com at free instance as web service, using as source github repository (GitHub - yarickshark/Node-red), but i cant set authorization. I just uncommented part of "set…

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## [Another 'Cannot GET /ui'](https://discourse.nodered.org/t/another-cannot-get-ui/96764)

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**Author:** [@slv07](https://discourse.nodered.org/u/slv07)\
**Replies:** 8\
**Last updated:** [26 April 2025 11:34 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764 "2025-04-26T11:34:11Z")

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I have very limited experience with RPi and Linux, and usually depend on others to create scripts or 'how to's ' on the web to get things up and running. Firstly, let me describe what I'm dealing with:- RPi 3 (updated…

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## [NR Installation not on 'pi'](https://discourse.nodered.org/t/nr-installation-not-on-pi/96761)

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**Author:** [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Replies:** 3\
**Last updated:** [26 April 2025 09:39 UTC](https://discourse.nodered.org/t/nr-installation-not-on-pi/96761 "2025-04-26T09:39:09Z")

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One point to make the operation of Raspbain OS more secure, there are instructions like this on the net: The default user/password must be changed. At least the password should be changed. To increase security, the use…

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## [Envoi d'une image snapshot via nodered sous home assistant](https://discourse.nodered.org/t/envoi-dune-image-snapshot-via-nodered-sous-home-assistant/96751)

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**Author:** [@bemo47](https://discourse.nodered.org/u/bemo47)\
**Replies:** 6\
**Last updated:** [25 April 2025 21:39 UTC](https://discourse.nodered.org/t/envoi-dune-image-snapshot-via-nodered-sous-home-assistant/96751 "2025-04-25T21:39:41Z")

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Bonjour, J'ai un dialogue entre nodered et telegram avec une commande /data et 3 choix, mais le choix snapshot d'une caméra ne veut pas fonctionner. Voilà le flux global : En haut l'affichage de la commande /data av…

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## [Delete subflow context?](https://discourse.nodered.org/t/delete-subflow-context/96752)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 2\
**Last updated:** [25 April 2025 13:14 UTC](https://discourse.nodered.org/t/delete-subflow-context/96752 "2025-04-25T13:14:20Z")

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Really enjoying the latest feature in nr 4.0.9 which allows for easy debugging of subflow context! I noticed delete button is there, can click it to open confirmation dialog, however it doesn't seem to be deleted? Should…

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## [Using exec node as root](https://discourse.nodered.org/t/using-exec-node-as-root/96737)

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**Author:** [@lukjasin](https://discourse.nodered.org/u/lukjasin)\
**Replies:** 15\
**Last updated:** [25 April 2025 11:25 UTC](https://discourse.nodered.org/t/using-exec-node-as-root/96737 "2025-04-25T11:25:26Z")

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I'm new here so first of all hello to everyone. I have a Victron Cerbo GX with Venus OS and a node-red v3.1.10 instance is running there. Node-red itself works fine, but I have a problem that I lost remote access to the…

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## [Node-red-contrib-gc - Exec format error on AMD EPYC Processor](https://discourse.nodered.org/t/node-red-contrib-gc-exec-format-error-on-amd-epyc-processor/96741)

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**Author:** [@YEUAM](https://discourse.nodered.org/u/YEUAM)\
**Replies:** 7\
**Last updated:** [25 April 2025 10:10 UTC](https://discourse.nodered.org/t/node-red-contrib-gc-exec-format-error-on-amd-epyc-processor/96741 "2025-04-25T10:10:15Z")

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Hy , somehow , i can't run the flows on the customers AMD EPYC Processor machine. How to find the problem / cause ? ( there is no internet access on that machine, so we develop it inHouse and transfering it onto…

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## [Alexa Cookie is not saved](https://discourse.nodered.org/t/alexa-cookie-is-not-saved/96746)

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**Author:** [@Pinky](https://discourse.nodered.org/u/Pinky)\
**Replies:** 4\
**Last updated:** [25 April 2025 06:07 UTC](https://discourse.nodered.org/t/alexa-cookie-is-not-saved/96746 "2025-04-25T06:07:01Z")

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Hi everyone, I am using alexa-remote2-applestrudel and am setting up on a clean install of nodered. Another PI is also running fine with the same configuration. On this new install I entered the same details including …

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## [Performance issues with large project – need optimization advice](https://discourse.nodered.org/t/performance-issues-with-large-project-need-optimization-advice/96726)

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**Author:** [@Prompt-Sopa](https://discourse.nodered.org/u/Prompt-Sopa)\
**Replies:** 18\
**Last updated:** [25 April 2025 00:00 UTC](https://discourse.nodered.org/t/performance-issues-with-large-project-need-optimization-advice/96726 "2025-04-25T00:00:02Z")

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Hi everyone, I'm working on a fairly large Node-RED project (portable version), and I'm running into hardware limitations, especially in terms of CPU and memory usage. My main concern is about flow optimization, partic…

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## [Custom node subscribed to flow restart event](https://discourse.nodered.org/t/custom-node-subscribed-to-flow-restart-event/42350)

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**Author:** [@jtaylor](https://discourse.nodered.org/u/jtaylor)\
**Replies:** 21\
**Last updated:** [24 April 2025 17:02 UTC](https://discourse.nodered.org/t/custom-node-subscribed-to-flow-restart-event/42350 "2025-04-24T17:02:35Z")

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Is it possible for my custom node to subscribe to the flow restart event? This would be to allow me to run some code when the flows restart. TIA

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## [Message Throttling/limits and Message Totals](https://discourse.nodered.org/t/message-throttling-limits-and-message-totals/96723)

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**Author:** [@HarryPottar](https://discourse.nodered.org/u/HarryPottar)\
**Replies:** 11\
**Last updated:** [24 April 2025 14:18 UTC](https://discourse.nodered.org/t/message-throttling-limits-and-message-totals/96723 "2025-04-24T14:18:21Z")

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Hello, Hopefully, I can explain my issue. Please feel free to ask any questions. I'm migrating millions of files from one volume to another. However, it's not a straightforward bulk copy of a file. The file's destinat…

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## [How to find out the credentialSecret](https://discourse.nodered.org/t/how-to-find-out-the-credentialsecret/96729)

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**Author:** [@toony1906](https://discourse.nodered.org/u/toony1906)\
**Replies:** 6\
**Last updated:** [24 April 2025 09:51 UTC](https://discourse.nodered.org/t/how-to-find-out-the-credentialsecret/96729 "2025-04-24T09:51:08Z")

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Hi everyone, I'm a bit new to Node Red and unfortunately I used a password in a config node which can't be reset and so I thought maybe I can decrypt the flows\_cred.json, for that I would need the credentialSecret. I ha…

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## [Help with the node-red-contrib-ui-time-scheduler node](https://discourse.nodered.org/t/help-with-the-node-red-contrib-ui-time-scheduler-node/96736)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [24 April 2025 07:44 UTC](https://discourse.nodered.org/t/help-with-the-node-red-contrib-ui-time-scheduler-node/96736 "2025-04-24T07:44:03Z")

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Sorry, this is sort of a problem, and I want to ask for a second set of eyes to look at it if there is an elephant I'm missing. Screen shot of flow: the white lines show the other link node paths. Sorry for the Mes…

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## [Node Red as opc ua client(IOT2050) to WinCC RT Unified V18 OPCUA Server](https://discourse.nodered.org/t/node-red-as-opc-ua-client-iot2050-to-wincc-rt-unified-v18-opcua-server/96732)

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**Author:** [@dinesh](https://discourse.nodered.org/u/dinesh)\
**Replies:** 0\
**Last updated:** [24 April 2025 01:23 UTC](https://discourse.nodered.org/t/node-red-as-opc-ua-client-iot2050-to-wincc-rt-unified-v18-opcua-server/96732 "2025-04-24T01:23:22Z")

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I’m trying to set up my node red(node js version 18 and node red v3.0.2) as a opc ua client to WinCC Unified RT V18 OPCUA Server. however, it is giving invalid endpoint error (node-red-contrib-opcua-0.2.339). I initiall…

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## [Cannot Read Modbus TCP Data From Node-Red](https://discourse.nodered.org/t/cannot-read-modbus-tcp-data-from-node-red/96688)

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**Author:** [@JustMe](https://discourse.nodered.org/u/JustMe)\
**Replies:** 11\
**Last updated:** [23 April 2025 16:34 UTC](https://discourse.nodered.org/t/cannot-read-modbus-tcp-data-from-node-red/96688 "2025-04-23T16:34:35Z")

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New to Node-Red. We got a Vector controller which uses Node Red, and I'm trying to read data from it with a Siemens PLC using modbus TCP. The Siemens used the same code to read from another PLC. I was surprised that when…

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## [Node red on Mac mini m2 starting as a service can't execute commands via exec node](https://discourse.nodered.org/t/node-red-on-mac-mini-m2-starting-as-a-service-cant-execute-commands-via-exec-node/96684)

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**Author:** [@mac89muc](https://discourse.nodered.org/u/mac89muc)\
**Replies:** 5\
**Last updated:** [23 April 2025 14:46 UTC](https://discourse.nodered.org/t/node-red-on-mac-mini-m2-starting-as-a-service-cant-execute-commands-via-exec-node/96684 "2025-04-23T14:46:44Z")

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Hello I've installed node-red on my macmini m2 running 15.4.1 Sequoia. Everything is working fine - if is start NR by terminal (cmd node-red) the exec node is working as expected - commands are executed correctly. But …

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## [Problem comparing dates with moment isBefore](https://discourse.nodered.org/t/problem-comparing-dates-with-moment-isbefore/96711)

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**Author:** [@Tinbum1](https://discourse.nodered.org/u/Tinbum1)\
**Replies:** 6\
**Last updated:** [23 April 2025 14:37 UTC](https://discourse.nodered.org/t/problem-comparing-dates-with-moment-isbefore/96711 "2025-04-23T14:37:57Z")

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A follow on to Problem comparing dates I'm on BST and have now found that the database source i am using always uses UTC. I'm trying to get the following to compare with the UTC time now and not GMT but can't see how to…

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## [Count Unique Entries in Database to Graph](https://discourse.nodered.org/t/count-unique-entries-in-database-to-graph/96717)

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**Author:** [@LetsDoIt](https://discourse.nodered.org/u/LetsDoIt)\
**Replies:** 0\
**Last updated:** [23 April 2025 12:05 UTC](https://discourse.nodered.org/t/count-unique-entries-in-database-to-graph/96717 "2025-04-23T12:05:54Z")

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Hi folks, I've resurrected an old project and I need a little help please. Long story short, I've installed Node Red on a phone. I've managed to get it to use a motion detection app to take photos and put them in a fol…

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## [Mosquitto mqtt example without escaping quotes?](https://discourse.nodered.org/t/mosquitto-mqtt-example-without-escaping-quotes/96716)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 3\
**Last updated:** [23 April 2025 11:43 UTC](https://discourse.nodered.org/t/mosquitto-mqtt-example-without-escaping-quotes/96716 "2025-04-23T11:43:00Z")

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This is a not exactly a question about node red, but since this community is also expert in related fields, perhaps someone can answer anyway. I've been playing around with mosquitto\_pub and an example from thingsboard: …

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## [Flow Set $parent.\<Dynamic Name\>](https://discourse.nodered.org/t/flow-set-parent-dynamic-name/96705)

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**Author:** [@HarryPottar](https://discourse.nodered.org/u/HarryPottar)\
**Replies:** 1\
**Last updated:** [22 April 2025 21:06 UTC](https://discourse.nodered.org/t/flow-set-parent-dynamic-name/96705 "2025-04-22T21:06:03Z")

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Hello, I'm storing the flow context in the parent for a subflow. I need to name the variable dynamically based on a login name. let userName = env.get("USERNAME"); if (msg.hasOwnProperty('UserName')) userName = msg.Us…

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## [Cannot process any more dataTypeDictionary](https://discourse.nodered.org/t/cannot-process-any-more-datatypedictionary/96698)

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**Author:** [@JsonDev](https://discourse.nodered.org/u/JsonDev)\
**Replies:** 4\
**Last updated:** [22 April 2025 20:18 UTC](https://discourse.nodered.org/t/cannot-process-any-more-datatypedictionary/96698 "2025-04-22T20:18:25Z")

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Hi, I'm trying to get a hold of node-red and to be able to comprehend it, I'm playing a bit with it. Nevertheless, when I try to deploy my nodes, I keep getting this error message in my command Bash : Cannot process an…

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## [Dashboard call leads to 404 error](https://discourse.nodered.org/t/dashboard-call-leads-to-404-error/96707)

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**Author:** [@Becker](https://discourse.nodered.org/u/Becker)\
**Replies:** 1\
**Last updated:** [22 April 2025 19:15 UTC](https://discourse.nodered.org/t/dashboard-call-leads-to-404-error/96707 "2025-04-22T19:15:58Z")

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Hi, I run a reverse proxy (Nginx) from which I access several Node-Red instances. I secured Nginx with fail2ban. I keep wondering why I ban myself after several views. So I take a look at the nginx log: GET /ui HTTP/2…

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## [Split flows.json file for easier diffs](https://discourse.nodered.org/t/split-flows-json-file-for-easier-diffs/96692)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 7\
**Last updated:** [22 April 2025 17:41 UTC](https://discourse.nodered.org/t/split-flows-json-file-for-easier-diffs/96692 "2025-04-22T17:41:03Z")

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If you don't need version control, I can understand that having all code in one file is easier. But node red already has the git integration in projects mode. Is there any good way of splitting flows.json into individual…

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## [AWS Athena Query](https://discourse.nodered.org/t/aws-athena-query/96706)

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**Author:** [@iMalinko](https://discourse.nodered.org/u/iMalinko)\
**Replies:** 0\
**Last updated:** [22 April 2025 16:27 UTC](https://discourse.nodered.org/t/aws-athena-query/96706 "2025-04-22T16:27:48Z")

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Hello. I am using node-red-contrib-aws-athena-express to replicate performing a SQL query. Using the AWS Athena Query, I am using my appropriate keys, and using msg.payload for my SQL query and msg.db as my S3 database…

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## [Oracle DB INSERT Not Working](https://discourse.nodered.org/t/oracle-db-insert-not-working/96566)

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**Author:** [@iMalinko](https://discourse.nodered.org/u/iMalinko)\
**Replies:** 8\
**Last updated:** [22 April 2025 15:44 UTC](https://discourse.nodered.org/t/oracle-db-insert-not-working/96566 "2025-04-22T15:44:32Z")

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Hello, all. I have used several oracledb nodes that I could find but I am only able to use SELECT query for reading data. I am trying to do an INSERT but I keep returning an error. I read the help node about field mar…

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## [How to package a node-red project?](https://discourse.nodered.org/t/how-to-package-a-node-red-project/96703)

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**Author:** [@winnerL](https://discourse.nodered.org/u/winnerL)\
**Replies:** 5\
**Last updated:** [22 April 2025 15:04 UTC](https://discourse.nodered.org/t/how-to-package-a-node-red-project/96703 "2025-04-22T15:04:32Z")

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I want to know how to package a node-red project. My node-red project is managed using docker compose. Now I want to deploy it to another computer. How can I package the project files and deploy them? Can I hide some of …

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## [Very long Node-red start-up when internet throttled](https://discourse.nodered.org/t/very-long-node-red-start-up-when-internet-throttled/96677)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 5\
**Last updated:** [22 April 2025 14:13 UTC](https://discourse.nodered.org/t/very-long-node-red-start-up-when-internet-throttled/96677 "2025-04-22T14:13:40Z")

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I use mobile broadband, which means a metered connection and if I overindulge I can run out of data. When that happens, the internet is "available" but it's either a very very throttled bandwidth or else zero bytes down…

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## [SOLVED: NodeRED, nodes missing and unable to install from pallet after. HA Backup Restore](https://discourse.nodered.org/t/solved-nodered-nodes-missing-and-unable-to-install-from-pallet-after-ha-backup-restore/96700)

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**Author:** [@MankiniChykan](https://discourse.nodered.org/u/MankiniChykan)\
**Replies:** 2\
**Last updated:** [22 April 2025 11:41 UTC](https://discourse.nodered.org/t/solved-nodered-nodes-missing-and-unable-to-install-from-pallet-after-ha-backup-restore/96700 "2025-04-22T11:41:51Z")

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I had to restore HA from a backup today everything seemed to go well. Everything seems to be functional except Node RED. Of particular note is this from the logs : \[19:19:12\] WARNING: Failed un-installing conflicting pa…

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