# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=398

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

**Page:** 399

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## [Is Node-RED the right tool for the job?](https://discourse.nodered.org/t/is-node-red-the-right-tool-for-the-job/60484)

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**Author:** [@L0uisc](https://discourse.nodered.org/u/L0uisc)\
**Replies:** 5\
**Last updated:** [29 March 2022 14:23 UTC](https://discourse.nodered.org/t/is-node-red-the-right-tool-for-the-job/60484 "2022-03-29T14:23:07Z")

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I'm looking at Node-RED to build an IoT dashboard type of website. I want to figure out if Node-RED is the right tool for the job as early as possible. The scenario: We have IoT devices with GPS and some digital I/O mo…

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## [Running node-red on kubernetes: file permissions error on pod initialization](https://discourse.nodered.org/t/running-node-red-on-kubernetes-file-permissions-error-on-pod-initialization/60420)

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**Author:** [@packnology](https://discourse.nodered.org/u/packnology)\
**Replies:** 11\
**Last updated:** [29 March 2022 11:45 UTC](https://discourse.nodered.org/t/running-node-red-on-kubernetes-file-permissions-error-on-pod-initialization/60420 "2022-03-29T11:45:26Z")

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Hi, I'm trying to install node-red on a kubernetes cluster and when the pod starts up it fails with the following error message: Error: EACCES: permission denied, copyfile '/usr/src/node-red/node\_modules/node-red/settin…

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## [Scrape page with cookies](https://discourse.nodered.org/t/scrape-page-with-cookies/60448)

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**Author:** [@ketpa](https://discourse.nodered.org/u/ketpa)\
**Replies:** 3\
**Last updated:** [29 March 2022 11:26 UTC](https://discourse.nodered.org/t/scrape-page-with-cookies/60448 "2022-03-29T11:26:48Z")

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I have page from KAESER compressor device. Simple get request node give me only this \<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"\> \<html\> \<head\> \<link rel="shortcut icon" h…

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## [How do I incorporate the hysteresis effect in a control flow?](https://discourse.nodered.org/t/how-do-i-incorporate-the-hysteresis-effect-in-a-control-flow/60466)

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**Author:** [@Sheeen](https://discourse.nodered.org/u/Sheeen)\
**Replies:** 9\
**Last updated:** [29 March 2022 10:45 UTC](https://discourse.nodered.org/t/how-do-i-incorporate-the-hysteresis-effect-in-a-control-flow/60466 "2022-03-29T10:45:55Z")

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I have a problem in the variable I want a math loop in node-red but I didn't know how to do it Variable x= 24 Variable y= 30 If 30\> temperature\> 24 Temperature - x \> 0 X = temperature; Else if temperature\> 30 Temp…

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## [Xampp node-red-node-mysql increased resources use](https://discourse.nodered.org/t/xampp-node-red-node-mysql-increased-resources-use/60475)

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**Author:** [@CrazyOvi](https://discourse.nodered.org/u/CrazyOvi)\
**Replies:** 12\
**Last updated:** [29 March 2022 09:09 UTC](https://discourse.nodered.org/t/xampp-node-red-node-mysql-increased-resources-use/60475 "2022-03-29T09:09:11Z")

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Hi all, I am new in node-red and try to use it as a SCADA tool. I am reading from PLCs and based on options I am writing into database (XAMPP). The problem is that the process "mysqld.exe" starts to use lots of pc res…

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## [Global/Persistant/Variable required for Timer Counter "Pi"](https://discourse.nodered.org/t/global-persistant-variable-required-for-timer-counter-pi/60473)

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**Author:** [@bxdobs](https://discourse.nodered.org/u/bxdobs)\
**Replies:** 2\
**Last updated:** [29 March 2022 08:03 UTC](https://discourse.nodered.org/t/global-persistant-variable-required-for-timer-counter-pi/60473 "2022-03-29T08:03:05Z")

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Trying to do something I thought would be real simple ... basically looking to have a Counter that resides on a PI Raspbian (unix) that could be Cleared, Set, Run and monitored from a node-red client ... this timer is re…

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## [Recommend an SFTP node](https://discourse.nodered.org/t/recommend-an-sftp-node/60100)

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**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 7\
**Last updated:** [29 March 2022 06:56 UTC](https://discourse.nodered.org/t/recommend-an-sftp-node/60100 "2022-03-29T06:56:16Z")

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I have a need to upload a file to my website from Node-RED so thought SFTP would be the way to do it. I notice there's a few STFP nodes - anyone doing this and would recommend one of them?

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## [Contrib-web-worldmap - offline help](https://discourse.nodered.org/t/contrib-web-worldmap-offline-help/60451)

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**Author:** [@ozpos](https://discourse.nodered.org/u/ozpos)\
**Replies:** 4\
**Last updated:** [28 March 2022 22:23 UTC](https://discourse.nodered.org/t/contrib-web-worldmap-offline-help/60451 "2022-03-28T22:23:29Z")

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Hi, first a big thank you to all that have contributed to this fantastic node. I have built a tracker for our over adventurous rescue lurcher to give us some piece of mind when walking in remote areas in the UK where th…

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## [Node-red error message](https://discourse.nodered.org/t/node-red-error-message/60467)

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**Author:** [@Bercolly](https://discourse.nodered.org/u/Bercolly)\
**Replies:** 3\
**Last updated:** [28 March 2022 21:40 UTC](https://discourse.nodered.org/t/node-red-error-message/60467 "2022-03-28T21:40:37Z")

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Hi, I am trying to return to homeassistant a date, here is the nodered flow : \[ { "id": "625950af552cf8f3", "type": "tab", "label": "Flow 3", "disabled": false, "info": "", …

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## [clear single line in multi-line chart](https://discourse.nodered.org/t/clear-single-line-in-multi-line-chart/60028)

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**Author:** [@Daniel1](https://discourse.nodered.org/u/Daniel1)\
**Replies:** 2\
**Last updated:** [28 March 2022 21:07 UTC](https://discourse.nodered.org/t/clear-single-line-in-multi-line-chart/60028 "2022-03-28T21:07:23Z")

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Hello, I am using a chart with two lines: SolarProduction and SolarForecast. SolarProduction is written during the day, one point per 15 minutes. SolarForecast is written for the whole day, but should be cleared and r…

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## [RESOLVED: Convert HTML to Array of Objects](https://discourse.nodered.org/t/resolved-convert-html-to-array-of-objects/60470)

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**Author:** [@plfinch](https://discourse.nodered.org/u/plfinch)\
**Replies:** 3\
**Last updated:** [28 March 2022 20:46 UTC](https://discourse.nodered.org/t/resolved-convert-html-to-array-of-objects/60470 "2022-03-28T20:46:56Z")

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I have an html response containing item element tags and subelement tags within. I want to convert this to an array of item objects containing the item elements. Here is a very simplified version of the HTML: \<rss\> \<i…

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## [Uibuilder and Socket.io problems upon Uibuilder update](https://discourse.nodered.org/t/uibuilder-and-socket-io-problems-upon-uibuilder-update/60395)

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**Author:** [@mapos](https://discourse.nodered.org/u/mapos)\
**Replies:** 15\
**Last updated:** [28 March 2022 17:12 UTC](https://discourse.nodered.org/t/uibuilder-and-socket-io-problems-upon-uibuilder-update/60395 "2022-03-28T17:12:34Z")

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We have an application using uibuilder and react working perfectly since 2 years now. we have recently updated the node red entire packages and with that also the Uibuilder node going from version 2.0.8 to the latest 4.1…

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## [Help ! is Node Red broken?](https://discourse.nodered.org/t/help-is-node-red-broken/60464)

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**Author:** [@jens69](https://discourse.nodered.org/u/jens69)\
**Replies:** 3\
**Last updated:** [28 March 2022 17:03 UTC](https://discourse.nodered.org/t/help-is-node-red-broken/60464 "2022-03-28T17:03:55Z")

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I have folowing debug output: ''' 8.3.2022, 18:02:23\[node: localhost\](http://pi4.fritz.box:1880/#)msg : string\[92\] " \< CUxD init Error \[ERR\_STREAM\_DESTROYED\]: Cannot call write after a stream was destroyed" 28.3.2022,…

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## [SERIAL IN string to be added with VALUE DESC, then polling as MQTT messages](https://discourse.nodered.org/t/serial-in-string-to-be-added-with-value-desc-then-polling-as-mqtt-messages/60204)

<div class="topic-metadata">

**Author:** [@kuhnino](https://discourse.nodered.org/u/kuhnino)\
**Replies:** 13\
**Last updated:** [28 March 2022 15:52 UTC](https://discourse.nodered.org/t/serial-in-string-to-be-added-with-value-desc-then-polling-as-mqtt-messages/60204 "2022-03-28T15:52:18Z")

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Alright, hello out there. I want to connect an USB device, added to a Node-Red Docker container on an UNRAID server, parse those received data nad publis it using MQTT. SERIAL IN : Is working already, the seril STRING …

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## [Count number of sensors reporting data](https://discourse.nodered.org/t/count-number-of-sensors-reporting-data/60428)

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**Author:** [@alpha815](https://discourse.nodered.org/u/alpha815)\
**Replies:** 6\
**Last updated:** [28 March 2022 15:33 UTC](https://discourse.nodered.org/t/count-number-of-sensors-reporting-data/60428 "2022-03-28T15:33:50Z")

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We have multiple sensors(16 for now) sending data to node-red. Data is collected via BLE gateway and transferred to raspberry Pi with serial input. This data is stored in InlfuxDB database. till now our flow is working f…

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## [RFC3339 to Unix Timestamp](https://discourse.nodered.org/t/rfc3339-to-unix-timestamp/60444)

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**Author:** [@subwayfootlong](https://discourse.nodered.org/u/subwayfootlong)\
**Replies:** 11\
**Last updated:** [28 March 2022 15:30 UTC](https://discourse.nodered.org/t/rfc3339-to-unix-timestamp/60444 "2022-03-28T15:30:33Z")

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Hi all, Trying to convert timestamp for my database. My sensor outputs timestamp in this format 2022-03-22T06:17:28:410209Z which I believe is RFC3339 according to influxdb But to my knowledge influxdb node only ac…

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## [Daylight saving - best approach](https://discourse.nodered.org/t/daylight-saving-best-approach/60403)

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**Author:** [@abroad](https://discourse.nodered.org/u/abroad)\
**Replies:** 2\
**Last updated:** [28 March 2022 14:49 UTC](https://discourse.nodered.org/t/daylight-saving-best-approach/60403 "2022-03-28T14:49:26Z")

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I've built my own scheduler in node-red for controlling stuff around the house. The basic data structure is an array of entries like: \[actionID, time, recurrence, parameters\] \[10, 1648395000000, 86400000,{which:"fish"…

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## [Read XML and write to a SQL Database](https://discourse.nodered.org/t/read-xml-and-write-to-a-sql-database/60452)

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**Author:** [@vleugd01](https://discourse.nodered.org/u/vleugd01)\
**Replies:** 8\
**Last updated:** [28 March 2022 14:29 UTC](https://discourse.nodered.org/t/read-xml-and-write-to-a-sql-database/60452 "2022-03-28T14:29:10Z")

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Dear node red forum members, First time I post a question (normal I can find any solutions here, but i dont know how to find this problem). I hope this is the right way. Also my primary language is dutch, i try to writ…

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## [Nodered docker image in Azure IoT Edge device](https://discourse.nodered.org/t/nodered-docker-image-in-azure-iot-edge-device/60457)

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**Author:** [@pdislk](https://discourse.nodered.org/u/pdislk)\
**Replies:** 0\
**Last updated:** [28 March 2022 13:41 UTC](https://discourse.nodered.org/t/nodered-docker-image-in-azure-iot-edge-device/60457 "2022-03-28T13:41:31Z")

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I downloaded the github project of docker nodered image (Docker Hub) and modified by adding node red opcua library in package.json and adding few environment variables. After that I built the image using docker-debian.s…

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## [Node-Red installation offline?](https://discourse.nodered.org/t/node-red-installation-offline/60446)

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**Author:** [@protonmw](https://discourse.nodered.org/u/protonmw)\
**Replies:** 4\
**Last updated:** [28 March 2022 13:29 UTC](https://discourse.nodered.org/t/node-red-installation-offline/60446 "2022-03-28T13:29:50Z")

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Hi folks! I need some urgent help, please! I need to install node-red on a windows machine without internet access. NPM has been installed, but I´m struggling with NR. I dont understand the solutions which can be found…

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## [Help with getting started with conditionals flow example?](https://discourse.nodered.org/t/help-with-getting-started-with-conditionals-flow-example/59456)

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**Author:** [@houser](https://discourse.nodered.org/u/houser)\
**Replies:** 9\
**Last updated:** [28 March 2022 11:54 UTC](https://discourse.nodered.org/t/help-with-getting-started-with-conditionals-flow-example/59456 "2022-03-28T11:54:28Z")

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Hello, I want to build a basic conditional in Node Red to hide or show some buttons that should not be possible to flip during certain conditions. I have searched here but probably using the wrong terms as I have come u…

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## [Csv data into sqlite](https://discourse.nodered.org/t/csv-data-into-sqlite/60405)

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**Author:** [@SplitSecComp](https://discourse.nodered.org/u/SplitSecComp)\
**Replies:** 27\
**Last updated:** [28 March 2022 09:53 UTC](https://discourse.nodered.org/t/csv-data-into-sqlite/60405 "2022-03-28T09:53:33Z")

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Hi. I have a device that sends me data in a csv format. How can i move/import the csv data into sqlite. I have set up the database and tables and can read the csv data but cant get it into sql. I dont want to do it manu…

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## [Tuya and NodeRed](https://discourse.nodered.org/t/tuya-and-nodered/60435)

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**Author:** [@Sirhc](https://discourse.nodered.org/u/Sirhc)\
**Replies:** 3\
**Last updated:** [28 March 2022 09:16 UTC](https://discourse.nodered.org/t/tuya-and-nodered/60435 "2022-03-28T09:16:07Z")

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Hello I've got a Tuya controlled WIFI device and have managed to successfully implement a flow using node red contrib tuya local. The node used in this calls for an IP address. My Tuya device obtains an IP address via …

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## [On Start called multiple times](https://discourse.nodered.org/t/on-start-called-multiple-times/59603)

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**Author:** [@augjoh](https://discourse.nodered.org/u/augjoh)\
**Replies:** 8\
**Last updated:** [28 March 2022 08:50 UTC](https://discourse.nodered.org/t/on-start-called-multiple-times/59603 "2022-03-28T08:50:47Z")

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When using "On Start" code of a Function node in a subflow, the code is called multiple times. This is unexpected, at least by me. Is there any way to suppress/configure this? Example output: 9 Mar 16:54:36 - \[info\] St…

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## [Node-red-node-serialport Update failed](https://discourse.nodered.org/t/node-red-node-serialport-update-failed/60434)

<div class="topic-metadata">

**Author:** [@protonmw](https://discourse.nodered.org/u/protonmw)\
**Replies:** 5\
**Last updated:** [28 March 2022 08:40 UTC](https://discourse.nodered.org/t/node-red-node-serialport-update-failed/60434 "2022-03-28T08:40:30Z")

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Hello all! How can I update node-red-node-serialport ? NR is running on Windows. 2022-03-28T07:19:29.452Z Install : node-red-node-serialport 1.0.1 2022-03-28T07:19:29.758Z npm.cmd install --no-audit --no-update-notif…

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## [Issues on converting OGG to WAV](https://discourse.nodered.org/t/issues-on-converting-ogg-to-wav/60370)

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**Author:** [@mfreudenberg](https://discourse.nodered.org/u/mfreudenberg)\
**Replies:** 6\
**Last updated:** [28 March 2022 07:55 UTC](https://discourse.nodered.org/t/issues-on-converting-ogg-to-wav/60370 "2022-03-28T07:55:17Z")

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Hi everyone! node red newbie here! If i make any obvious mistakes, please bare with me. My project idea After playing around with some flows i wanted to create my first "real" flow. I'd like to create a flow, that rece…

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## [How to fetch website login data into node red?](https://discourse.nodered.org/t/how-to-fetch-website-login-data-into-node-red/60323)

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**Author:** [@UnknownForever](https://discourse.nodered.org/u/UnknownForever)\
**Replies:** 4\
**Last updated:** [28 March 2022 07:12 UTC](https://discourse.nodered.org/t/how-to-fetch-website-login-data-into-node-red/60323 "2022-03-28T07:12:54Z")

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Hi guys, I have been creating a website using php as back end and mysql as my database. Now I want to display which user is login to the system at node red. Is there any way to fetch the data from website to node red?

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## [Adding Bearer token as a HTTP Header](https://discourse.nodered.org/t/adding-bearer-token-as-a-http-header/60408)

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**Author:** [@lobster87](https://discourse.nodered.org/u/lobster87)\
**Replies:** 1\
**Last updated:** [28 March 2022 02:50 UTC](https://discourse.nodered.org/t/adding-bearer-token-as-a-http-header/60408 "2022-03-28T02:50:20Z")

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Hello, I try to create HTTP flows in which users try to authenticate and after positive verification, she or he get a response with a header that contains the token. So far, based on Authenticating Node-RED using JSONWe…

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## [I'm not sure what I'm seeing, looks like a buffer overrun... but I don't get why](https://discourse.nodered.org/t/im-not-sure-what-im-seeing-looks-like-a-buffer-overrun-but-i-dont-get-why/60415)

<div class="topic-metadata">

**Author:** [@cthierman](https://discourse.nodered.org/u/cthierman)\
**Replies:** 3\
**Last updated:** [27 March 2022 20:56 UTC](https://discourse.nodered.org/t/im-not-sure-what-im-seeing-looks-like-a-buffer-overrun-but-i-dont-get-why/60415 "2022-03-27T20:56:18Z")

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Node-red version: 2.2.2 node -v v14.19.1 npm -v 6.14.16 I think I'm running into a buffer overrun. But maybe I'm just not seeing my error. Needed to use node-red to process some data out of GnuRadio, the data comes…

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## [Http request error after migration in docker](https://discourse.nodered.org/t/http-request-error-after-migration-in-docker/60391)

<div class="topic-metadata">

**Author:** [@corin.corvus](https://discourse.nodered.org/u/corin.corvus)\
**Replies:** 12\
**Last updated:** [27 March 2022 19:53 UTC](https://discourse.nodered.org/t/http-request-error-after-migration-in-docker/60391 "2022-03-27T19:53:44Z")

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Hi, i used node-red long time in a virtual mashine, but at the moment i merge my servers a little bit. so i merged all smarthome vms in one vm with dockers. Node-red is also a docker now and the most run pretty good. O…

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