# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=439

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

**Page:** 440

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## [Watching a .mdf File](https://discourse.nodered.org/t/watching-a-mdf-file/56534)

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**Author:** [@Diver](https://discourse.nodered.org/u/Diver)\
**Replies:** 2\
**Last updated:** [13 January 2022 13:56 UTC](https://discourse.nodered.org/t/watching-a-mdf-file/56534 "2022-01-13T13:56:23Z")

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Hi there, I am currently trying to keep an application updated about some MS SQL Server Databases, therefore I need to read the DB (using the mssql node), change some small things about the output and then send it to a …

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## [InfluxDB Out node - Define Measurement programmatically](https://discourse.nodered.org/t/influxdb-out-node-define-measurement-programmatically/56525)

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**Author:** [@FeliceM](https://discourse.nodered.org/u/FeliceM)\
**Replies:** 13\
**Last updated:** [13 January 2022 13:32 UTC](https://discourse.nodered.org/t/influxdb-out-node-define-measurement-programmatically/56525 "2022-01-13T13:32:54Z")

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Hi There and Happy New Year. I have a situation where I receive MQTT messages containing the ID of the device forwarding the data and some measured value from the sensors. I am attempting to store the measured values i…

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## [Change shared node properties](https://discourse.nodered.org/t/change-shared-node-properties/56573)

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**Author:** [@Git](https://discourse.nodered.org/u/Git)\
**Replies:** 5\
**Last updated:** [13 January 2022 12:10 UTC](https://discourse.nodered.org/t/change-shared-node-properties/56573 "2022-01-13T12:10:07Z")

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Hi, I was wondering whether there is a way to change the properties of multiple nodes simultaneously. For example the "Activate/Deactivate" property or the "ui\_grp" property of dashboard nodes. Currently one has to pic…

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## [Subtraction within function node](https://discourse.nodered.org/t/subtraction-within-function-node/56586)

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**Author:** [@JHScen](https://discourse.nodered.org/u/JHScen)\
**Replies:** 11\
**Last updated:** [13 January 2022 11:46 UTC](https://discourse.nodered.org/t/subtraction-within-function-node/56586 "2022-01-13T11:46:16Z")

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Hi all - Apologies in advance as I am new to Node-Red and this may be an easy fix, but after multiple attempts I cannot seem to find the fix. I am using node-red version 2.1.3. What I am trying to do is pull data into …

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## [Feature request, edit Inject value without deploy](https://discourse.nodered.org/t/feature-request-edit-inject-value-without-deploy/7729)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 37\
**Last updated:** [13 January 2022 09:01 UTC](https://discourse.nodered.org/t/feature-request-edit-inject-value-without-deploy/7729 "2022-01-13T09:01:44Z")

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It would be really comfortable to edit the inject value without deploying all, it will speed up the debug process. Thank you

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## [Alexa-remote2 On HA, on a Pi4 what do I enter for the File Path](https://discourse.nodered.org/t/alexa-remote2-on-ha-on-a-pi4-what-do-i-enter-for-the-file-path/54583)

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**Author:** [@DaveTiff](https://discourse.nodered.org/u/DaveTiff)\
**Replies:** 2\
**Last updated:** [13 January 2022 08:36 UTC](https://discourse.nodered.org/t/alexa-remote2-on-ha-on-a-pi4-what-do-i-enter-for-the-file-path/54583 "2022-01-13T08:36:49Z")

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Hi, very new to Node-Red trying to set up node-red-contrib-alexa-remote2-applestrudel. When I deploy I always have to go to my browser, the authentication is not being save. In my path I have "/usr/share/hassio/homeass…

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## [Error log filling up due to confused folder location](https://discourse.nodered.org/t/error-log-filling-up-due-to-confused-folder-location/56548)

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**Author:** [@smbunn](https://discourse.nodered.org/u/smbunn)\
**Replies:** 1\
**Last updated:** [13 January 2022 07:52 UTC](https://discourse.nodered.org/t/error-log-filling-up-due-to-confused-folder-location/56548 "2022-01-13T07:52:14Z")

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My ubuntu server warned me that the TB of storage was getting full which was a shock. Turned out I had 950 Gb of .pm2 error logs and the problem log file was node-red-error.log. It was full of the same message: Cannot…

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## [Receiving MQTT response from a Philips bulb](https://discourse.nodered.org/t/receiving-mqtt-response-from-a-philips-bulb/56291)

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**Author:** [@B3n84](https://discourse.nodered.org/u/B3n84)\
**Replies:** 6\
**Last updated:** [12 January 2022 20:53 UTC](https://discourse.nodered.org/t/receiving-mqtt-response-from-a-philips-bulb/56291 "2022-01-12T20:53:02Z")

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I have an RPi running Node-Red, Mosquitto and Zigbee2MQTT in Docker (latest). Currently only one Philps Hue lamp (9290022169) is connected which I can control. Unfortunately I have a problem querying the status and use i…

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## [Can not install nodes](https://discourse.nodered.org/t/can-not-install-nodes/56536)

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**Author:** [@sweetwater](https://discourse.nodered.org/u/sweetwater)\
**Replies:** 2\
**Last updated:** [12 January 2022 19:40 UTC](https://discourse.nodered.org/t/can-not-install-nodes/56536 "2022-01-12T19:40:56Z")

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I have been using NodeRed for few years now. Hosting the NodeRed on a Pi. Recently, I am trying to install some new nodes specifically node-red-contrib-noble-bluetooth However, I am getting errors.( see below) I have…

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## [WorldMap Node / Problem with the displaying of layers with lines geometry](https://discourse.nodered.org/t/worldmap-node-problem-with-the-displaying-of-layers-with-lines-geometry/56535)

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**Author:** [@Lafayette](https://discourse.nodered.org/u/Lafayette)\
**Replies:** 4\
**Last updated:** [12 January 2022 17:08 UTC](https://discourse.nodered.org/t/worldmap-node-problem-with-the-displaying-of-layers-with-lines-geometry/56535 "2022-01-12T17:08:57Z")

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Hi, i want to display some layers with type line geometry (geojson, type Multistringlines)). The problem is that they are displayed like polygons. An idea ? Thx

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## [How can I close persistent http connections?](https://discourse.nodered.org/t/how-can-i-close-persistent-http-connections/56541)

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**Author:** [@the-greenman](https://discourse.nodered.org/u/the-greenman)\
**Replies:** 1\
**Last updated:** [12 January 2022 17:04 UTC](https://discourse.nodered.org/t/how-can-i-close-persistent-http-connections/56541 "2022-01-12T17:04:41Z")

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Is there a way to close persistent http-request connections? I am building a node-red interface for Twitter's streaming API. This requires that I open a persistent streaming connection to an API endpoint. I've got no t…

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## [Linking NR to EyeOnWater data](https://discourse.nodered.org/t/linking-nr-to-eyeonwater-data/55625)

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**Author:** [@bkenobi](https://discourse.nodered.org/u/bkenobi)\
**Replies:** 2\
**Last updated:** [12 January 2022 15:36 UTC](https://discourse.nodered.org/t/linking-nr-to-eyeonwater-data/55625 "2022-01-12T15:36:05Z")

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My utility company utilizes a smart water meter connected to an account at EyeOnWater.com. While the data seems to be very complete and fairly easy to navigate in order to see various usage patterns, I would like to be …

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## [Determining if value inside msg.payload is an array](https://discourse.nodered.org/t/determining-if-value-inside-msg-payload-is-an-array/56479)

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**Author:** [@Jdo300](https://discourse.nodered.org/u/Jdo300)\
**Replies:** 9\
**Last updated:** [12 January 2022 15:35 UTC](https://discourse.nodered.org/t/determining-if-value-inside-msg-payload-is-an-array/56479 "2022-01-12T15:35:11Z")

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So I'm trying to take an input JSON object which contains an array of values and simply determine, in my function node, if the variable contains an array or not. It works fine if I declare the object directly inside the …

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## [Shellyplus1 (gen2) Nodered to MQTT](https://discourse.nodered.org/t/shellyplus1-gen2-nodered-to-mqtt/56522)

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**Author:** [@Japie.G](https://discourse.nodered.org/u/Japie.G)\
**Replies:** 11\
**Last updated:** [12 January 2022 15:01 UTC](https://discourse.nodered.org/t/shellyplus1-gen2-nodered-to-mqtt/56522 "2022-01-12T15:01:44Z")

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Hello! I am trying to switch the relay of a shellyplus-1 on and off using an MQTT message from nodered. With Gen1 shelly devices this was easy. I don’t know what i am doing wrong now. Without posting what i already trie…

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## [adminAuth tokens function for jwt works in v1.3.5 but not in v2.1.4](https://discourse.nodered.org/t/adminauth-tokens-function-for-jwt-works-in-v1-3-5-but-not-in-v2-1-4/56498)

<div class="topic-metadata">

**Author:** [@notscottsmith](https://discourse.nodered.org/u/notscottsmith)\
**Replies:** 4\
**Last updated:** [12 January 2022 14:00 UTC](https://discourse.nodered.org/t/adminauth-tokens-function-for-jwt-works-in-v1-3-5-but-not-in-v2-1-4/56498 "2022-01-12T14:00:35Z")

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Hi All, We've got an implementation of Node-RED which sits behind cloudflare and authenticates via the JWT process. In v1.3.5 this function worked well and wasn't a problem. When I've upgraded to v2.1.4, this same funct…

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## [Change a mqtt message property](https://discourse.nodered.org/t/change-a-mqtt-message-property/56476)

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**Author:** [@gjones84](https://discourse.nodered.org/u/gjones84)\
**Replies:** 9\
**Last updated:** [12 January 2022 13:55 UTC](https://discourse.nodered.org/t/change-a-mqtt-message-property/56476 "2022-01-12T13:55:01Z")

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Hi All, Hopefully a really easy one for someone. Im still a newbe to node red. If I have a mqtt message coming into a flow of a value -200. In the debug window it looks like this. How do I change the message properti…

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## [Calculating with a value from a database](https://discourse.nodered.org/t/calculating-with-a-value-from-a-database/56514)

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**Author:** [@evanic14](https://discourse.nodered.org/u/evanic14)\
**Replies:** 8\
**Last updated:** [12 January 2022 12:23 UTC](https://discourse.nodered.org/t/calculating-with-a-value-from-a-database/56514 "2022-01-12T12:23:52Z")

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Hello, I have a query that calculates the time between the last entry and the current time. The query gets executed every 30 seconds. This is the result im getting from the database. So far so good. Now i want to use …

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## [Can't send command via exec](https://discourse.nodered.org/t/cant-send-command-via-exec/56255)

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**Author:** [@strelniece](https://discourse.nodered.org/u/strelniece)\
**Replies:** 5\
**Last updated:** [12 January 2022 11:11 UTC](https://discourse.nodered.org/t/cant-send-command-via-exec/56255 "2022-01-12T11:11:50Z")

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Hi, Trying to turn the screensaver on/off via the exec-node, but doesn't work. Running on debian 11, Command I try to use: cinnamon-screensaver-command with flags -d and -a result: stdout: Can't connect to screensav…

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## [Setting.js is not opening](https://discourse.nodered.org/t/setting-js-is-not-opening/56515)

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**Author:** [@aminulhaq](https://discourse.nodered.org/u/aminulhaq)\
**Replies:** 5\
**Last updated:** [12 January 2022 10:49 UTC](https://discourse.nodered.org/t/setting-js-is-not-opening/56515 "2022-01-12T10:49:38Z")

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hi, I want to add login and password to my node red dashboard but when i open setting file it is showing error how to solve the issue

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## [Cron plus output](https://discourse.nodered.org/t/cron-plus-output/56417)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 22\
**Last updated:** [12 January 2022 09:04 UTC](https://discourse.nodered.org/t/cron-plus-output/56417 "2022-01-12T09:04:33Z")

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Trying to setup cron plus for sunrise sunset events outputting boolean-logic, for several days have tried to see what outputs when but due to several missteps haven't had any luck. I am assuming the node will output tru…

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## [Node-red-contrib-tfjs-coco-ssd keep loading model for a long time](https://discourse.nodered.org/t/node-red-contrib-tfjs-coco-ssd-keep-loading-model-for-a-long-time/56503)

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**Author:** [@faridomu](https://discourse.nodered.org/u/faridomu)\
**Replies:** 0\
**Last updated:** [12 January 2022 05:54 UTC](https://discourse.nodered.org/t/node-red-contrib-tfjs-coco-ssd-keep-loading-model-for-a-long-time/56503 "2022-01-12T05:54:17Z")

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Hello i have problem with this node. tf coco ssd node keep loading for a long time. The model isn't ready yet. Does anyone have solution for my problem? ( i use node in raspberry pi 3)

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## [How do I Extract Specific Data from Payload](https://discourse.nodered.org/t/how-do-i-extract-specific-data-from-payload/56492)

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**Author:** [@nld77](https://discourse.nodered.org/u/nld77)\
**Replies:** 7\
**Last updated:** [12 January 2022 06:38 UTC](https://discourse.nodered.org/t/how-do-i-extract-specific-data-from-payload/56492 "2022-01-12T06:38:00Z")

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Hi, I am hoping someone can help me with what i think is going to be an easy question. I am using Node Red with Home Assistant and in the above flow I would like to extract the data.entity\_id from the msg.payload and…

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## [Install NodeRed on Cpanel with Phusion Passenger](https://discourse.nodered.org/t/install-nodered-on-cpanel-with-phusion-passenger/56467)

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**Author:** [@fernando.giacomino](https://discourse.nodered.org/u/fernando.giacomino)\
**Replies:** 3\
**Last updated:** [11 January 2022 22:52 UTC](https://discourse.nodered.org/t/install-nodered-on-cpanel-with-phusion-passenger/56467 "2022-01-11T22:52:11Z")

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Hi! I've installed NR in a shared hosting, with a wizard that allows me to set Node.js version, domain, and startup file. Once app is started, a virtual enviroment is created where I can access with ssh terminal and ins…

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## [Node to pick a date](https://discourse.nodered.org/t/node-to-pick-a-date/56256)

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**Author:** [@mariulin](https://discourse.nodered.org/u/mariulin)\
**Replies:** 4\
**Last updated:** [11 January 2022 19:26 UTC](https://discourse.nodered.org/t/node-to-pick-a-date/56256 "2022-01-11T19:26:34Z")

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Hi everybody, I need to have a node that can do this 3 think: Pick a complete specific date (day, month, year) or pick only a specific month and year or pick only a specific year. Once that the choiche was made, with a…

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## [Serious HueMagic Problem](https://discourse.nodered.org/t/serious-huemagic-problem/56429)

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**Author:** [@Ascarsy](https://discourse.nodered.org/u/Ascarsy)\
**Replies:** 4\
**Last updated:** [11 January 2022 17:36 UTC](https://discourse.nodered.org/t/serious-huemagic-problem/56429 "2022-01-11T17:36:54Z")

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Hi, I have a serious problem with HueMagic. I have several light control flows created with a rather complicated logic. Everything worked fine until I updated to the new version 4.0.2. Now I have very strange behaviour…

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## [MQTT Time Out / Random Disconnect](https://discourse.nodered.org/t/mqtt-time-out-random-disconnect/56463)

<div class="topic-metadata">

**Author:** [@edwardr](https://discourse.nodered.org/u/edwardr)\
**Replies:** 13\
**Last updated:** [11 January 2022 17:14 UTC](https://discourse.nodered.org/t/mqtt-time-out-random-disconnect/56463 "2022-01-11T17:14:04Z")

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Hello Folks, I have recently came across an issue with the MQTT nodes on node Red. Randomly the mqtt node will disconnect requiring a restart or reboot of Node Red- I was wondering if this has to do with the keep alive…

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## [How do I recover my flows from an old SD card?](https://discourse.nodered.org/t/how-do-i-recover-my-flows-from-an-old-sd-card/56410)

<div class="topic-metadata">

**Author:** [@BruceEmsworth1](https://discourse.nodered.org/u/BruceEmsworth1)\
**Replies:** 18\
**Last updated:** [11 January 2022 16:56 UTC](https://discourse.nodered.org/t/how-do-i-recover-my-flows-from-an-old-sd-card/56410 "2022-01-11T16:56:59Z")

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I want to recover my flows from an old SD card after it stopped booting. It is in a RPi4 and is the Bullseye version. I have built a new card and have the old card and the file system seems to be all(?) there. What fil…

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## [MQTT Counter reset in Tasmota](https://discourse.nodered.org/t/mqtt-counter-reset-in-tasmota/56395)

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**Author:** [@bigluc](https://discourse.nodered.org/u/bigluc)\
**Replies:** 7\
**Last updated:** [11 January 2022 16:55 UTC](https://discourse.nodered.org/t/mqtt-counter-reset-in-tasmota/56395 "2022-01-11T16:55:54Z")

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I have a question: I want to reset a counter in Tasmota via MQTT but I don't understand which topic I have to use or which command. Whenever I try it I always get {"Command": "Unknown"} ...I hope someone can help me f…

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## [Docker install Tradfri config node](https://discourse.nodered.org/t/docker-install-tradfri-config-node/56402)

<div class="topic-metadata">

**Author:** [@monkeytrumpet](https://discourse.nodered.org/u/monkeytrumpet)\
**Replies:** 4\
**Last updated:** [11 January 2022 14:21 UTC](https://discourse.nodered.org/t/docker-install-tradfri-config-node/56402 "2022-01-11T14:21:19Z")

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I have a fresh docker install, and have just installed the tradfri nodes. All appear in the palette apart from the config node which has a dotted line in the palette manager. Node and Nodejs are running 14.18.2, npm ver…

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## [The \`filter\` node (or the old \`RBE\` node)](https://discourse.nodered.org/t/the-filter-node-or-the-old-rbe-node/56371)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 16\
**Last updated:** [11 January 2022 13:49 UTC](https://discourse.nodered.org/t/the-filter-node-or-the-old-rbe-node/56371 "2022-01-11T13:49:15Z")

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I haven't used it much, but am/was helping someone with their question and wrote a small flow for them as an example. \[{"id":"581f105619104477","type":"rbe","z":"437e4108076e5928","name":"","func":"narrowbandEq","gap":"…

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