# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=888

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

**Page:** 889

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## [Node Red getting killed in RedHat](https://discourse.nodered.org/t/node-red-getting-killed-in-redhat/10828)

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**Author:** [@nitingautam](https://discourse.nodered.org/u/nitingautam)\
**Replies:** 2\
**Last updated:** [5 May 2019 18:07 UTC](https://discourse.nodered.org/t/node-red-getting-killed-in-redhat/10828 "2019-05-05T18:07:07Z")

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Hi All, I am running NodeRed 0.19.5 instance on RedHat 7.x 64bit with 4 cores and 16 GB RAM. I am running a flow to fetch data form SAP system using node-rfc connector which calls some BAPIs, processes it and push back…

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## [Execute script when changing topic"s value](https://discourse.nodered.org/t/execute-script-when-changing-topic-s-value/10798)

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**Author:** [@atux\_null](https://discourse.nodered.org/u/atux_null)\
**Replies:** 6\
**Last updated:** [5 May 2019 16:30 UTC](https://discourse.nodered.org/t/execute-script-when-changing-topic-s-value/10798 "2019-05-05T16:30:07Z")

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Hi. Start doing my baby steps with node red and i am looking on how to achieve a task. My setup has a raspberry that runs mqtt broker and node-red. On mqtt there are some topics and each topic has values either 0 or 1 an…

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## [Node-red repeat msg.payload in dashboard](https://discourse.nodered.org/t/node-red-repeat-msg-payload-in-dashboard/10804)

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**Author:** [@florent](https://discourse.nodered.org/u/florent)\
**Replies:** 5\
**Last updated:** [5 May 2019 15:02 UTC](https://discourse.nodered.org/t/node-red-repeat-msg-payload-in-dashboard/10804 "2019-05-05T15:02:30Z")

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Good evening, I don't understand why. Node-red repeat many times each msg.payload message in my dashbord. eg: Function d = new Date() p = msg.payload.event i = msg.payload.nodeid // t = msg.payload.uuid /\* t = ms…

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## [Understanding Nodered: "main" method?](https://discourse.nodered.org/t/understanding-nodered-main-method/10819)

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**Author:** [@Inso](https://discourse.nodered.org/u/Inso)\
**Replies:** 8\
**Last updated:** [5 May 2019 13:48 UTC](https://discourse.nodered.org/t/understanding-nodered-main-method/10819 "2019-05-05T13:48:07Z")

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Hi, I am coming from C++ / Java. I have a setup with different flows, which I assume is a bit like a static class. I create "flow" variables to ensure they are local, secure and do not slow down other flows. F.e. an ar…

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## [Use switch node to filter different devices](https://discourse.nodered.org/t/use-switch-node-to-filter-different-devices/10823)

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**Author:** [@daniel1411](https://discourse.nodered.org/u/daniel1411)\
**Replies:** 1\
**Last updated:** [5 May 2019 08:11 UTC](https://discourse.nodered.org/t/use-switch-node-to-filter-different-devices/10823 "2019-05-05T08:11:34Z")

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Hi, I am using Node red and Hass.io and want to listen to events from Aqara click, but i have more than 1 button (different entity\_id) and each button can be press single, double.... 1- What i need to set in the swi…

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## [How to get states from external software](https://discourse.nodered.org/t/how-to-get-states-from-external-software/8608)

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**Author:** [@thomaspz](https://discourse.nodered.org/u/thomaspz)\
**Replies:** 5\
**Last updated:** [4 March 2019 23:45 UTC](https://discourse.nodered.org/t/how-to-get-states-from-external-software/8608 "2019-03-04T23:45:24Z")

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Hello, I'm just starting with node red and I'm very impressed of this absolutly cool software. I tested some simple things, like ping a host and display it on a dashboard. Now I'm searching for a way to get informatio…

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## [Arbitrary, multiple synchronous message function?](https://discourse.nodered.org/t/arbitrary-multiple-synchronous-message-function/10818)

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**Author:** [@yesdred](https://discourse.nodered.org/u/yesdred)\
**Replies:** 10\
**Last updated:** [5 May 2019 06:26 UTC](https://discourse.nodered.org/t/arbitrary-multiple-synchronous-message-function/10818 "2019-05-05T06:26:03Z")

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I'd like to trigger a flow x times where x == msg.payload. Due to the inherent asynchronicity, the following function fails: var count = parseInt(msg.payload); var i = 0; while ( i \< count) { i++; node.send(msg)…

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## [Remove & replace "counter"](https://discourse.nodered.org/t/remove-replace-counter/10701)

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**Author:** [@ronsimpson](https://discourse.nodered.org/u/ronsimpson)\
**Replies:** 16\
**Last updated:** [3 May 2019 15:55 UTC](https://discourse.nodered.org/t/remove-replace-counter/10701 "2019-05-03T15:55:09Z")

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I want to use " contrib-counter" not "counter". Can not remove counter. Cannot rename a node. Using a laptop with Unbuto. Will move to a Pi later. v0.20.5

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## [Connectivity issue with Node-Red behind HTTPD](https://discourse.nodered.org/t/connectivity-issue-with-node-red-behind-httpd/10813)

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**Author:** [@Utundu](https://discourse.nodered.org/u/Utundu)\
**Replies:** 3\
**Last updated:** [4 May 2019 21:41 UTC](https://discourse.nodered.org/t/connectivity-issue-with-node-red-behind-httpd/10813 "2019-05-04T21:41:38Z")

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Hi, I'm having issues with my Node-Red setup. I use Docker (compose) as described below: nodered: image: nodered/node-red-docker:v8 ports: - "1880:1880" net: "host" volumes: - "/disk1/config/nodered:/d…

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## [How to pass a password in the exec node](https://discourse.nodered.org/t/how-to-pass-a-password-in-the-exec-node/10814)

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**Author:** [@mike67](https://discourse.nodered.org/u/mike67)\
**Replies:** 5\
**Last updated:** [4 May 2019 20:40 UTC](https://discourse.nodered.org/t/how-to-pass-a-password-in-the-exec-node/10814 "2019-05-04T20:40:36Z")

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Hello I need to send a command like sudo openport 1234 with a exec node When I run this command in the terminal, I'm asked for the user password. How can i pass this password in the exec node? Thanks

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## [MQTT would not connect to TLS broker](https://discourse.nodered.org/t/mqtt-would-not-connect-to-tls-broker/10803)

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**Author:** [@nygma2004](https://discourse.nodered.org/u/nygma2004)\
**Replies:** 10\
**Last updated:** [4 May 2019 20:27 UTC](https://discourse.nodered.org/t/mqtt-would-not-connect-to-tls-broker/10803 "2019-05-04T20:27:51Z")

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Hi All, I am sorry to post this here, but I did not find a MQTT specific forum. Yesterday I have updated my NR to the latest version which took about 3.5 hours, mostly because there was some issue with updating the mosq…

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## [Getting started with sending IR signals & controlling them via node red](https://discourse.nodered.org/t/getting-started-with-sending-ir-signals-controlling-them-via-node-red/10722)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 11\
**Last updated:** [4 May 2019 16:11 UTC](https://discourse.nodered.org/t/getting-started-with-sending-ir-signals-controlling-them-via-node-red/10722 "2019-05-04T16:11:00Z")

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I had a lot of fun setting up my 433Mhz transmitter/receiver and configuring control of a bunch of Etekcity RF outlets via Node-Red. Now I'm starting to look into doing something similar with infrared signals. I know v…

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## [CoAP palette - NO CONfirmable message missing option](https://discourse.nodered.org/t/coap-palette-no-confirmable-message-missing-option/10810)

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**Author:** [@mike1974](https://discourse.nodered.org/u/mike1974)\
**Replies:** 1\
**Last updated:** [4 May 2019 14:56 UTC](https://discourse.nodered.org/t/coap-palette-no-confirmable-message-missing-option/10810 "2019-05-04T14:56:05Z")

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Hi, I'm using a CoAP request node to send message to a coap-server hosted on a distant machine. I can't find the way to choose the CON (confirmable) or NO CON (non confirmable) option. There's no options regarding the …

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## [ERROR in node-red run](https://discourse.nodered.org/t/error-in-node-red-run/10799)

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**Author:** [@chirag](https://discourse.nodered.org/u/chirag)\
**Replies:** 6\
**Last updated:** [4 May 2019 10:17 UTC](https://discourse.nodered.org/t/error-in-node-red-run/10799 "2019-05-04T10:17:25Z")

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AFTER USING MODBUS SERVER NODE MY NODE-RED IS NOT WORKING. PL GUIDE TO SOLVE.

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## [Access to node red Dashboard on different device with same internet service](https://discourse.nodered.org/t/access-to-node-red-dashboard-on-different-device-with-same-internet-service/10801)

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**Author:** [@raghavendraawad](https://discourse.nodered.org/u/raghavendraawad)\
**Replies:** 5\
**Last updated:** [4 May 2019 09:37 UTC](https://discourse.nodered.org/t/access-to-node-red-dashboard-on-different-device-with-same-internet-service/10801 "2019-05-04T09:37:49Z")

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Is it possible to access node red dashboard on 2 different devices? I have created the Node red server on my Rasberry Pi 3. I have secured it with a username and password security authentication. Now I have opened 1 da…

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## [Node-red to firebase data sending](https://discourse.nodered.org/t/node-red-to-firebase-data-sending/9560)

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**Author:** [@chirag](https://discourse.nodered.org/u/chirag)\
**Replies:** 8\
**Last updated:** [4 May 2019 09:25 UTC](https://discourse.nodered.org/t/node-red-to-firebase-data-sending/9560 "2019-05-04T09:25:05Z")

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i am trying too send data from node-red to google firebase and facing the issue.(attached snap shot) please help to solve.

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## [Post method syntax browser](https://discourse.nodered.org/t/post-method-syntax-browser/10793)

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**Author:** [@lodv](https://discourse.nodered.org/u/lodv)\
**Replies:** 2\
**Last updated:** [4 May 2019 06:13 UTC](https://discourse.nodered.org/t/post-method-syntax-browser/10793 "2019-05-04T06:13:40Z")

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Hi, I'm working on the examples from the Node-Red Cookbook. I'm stuck with the node-red post example. What do I have to type in the browsers address? When I type curl -X POST -d 'Nick' and so, I'm redirected to the…

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## [Flows stopped due to missing node types (BLE)](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-ble/4575)

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**Author:** [@jmesberg](https://discourse.nodered.org/u/jmesberg)\
**Replies:** 18\
**Last updated:** [3 May 2019 18:04 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-ble/4575 "2019-05-03T18:04:39Z")

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I tried to install a node called node-red-contrib-generic-ble and failed to notice that it had a bluetooth dependency that I had not resolved. The installation failed, but then also caused all of my flows to stop with th…

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## [Subflows & environment variables?](https://discourse.nodered.org/t/subflows-environment-variables/10782)

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**Author:** [@JesseWebDotCom](https://discourse.nodered.org/u/JesseWebDotCom)\
**Replies:** 4\
**Last updated:** [3 May 2019 15:39 UTC](https://discourse.nodered.org/t/subflows-environment-variables/10782 "2019-05-03T15:39:04Z")

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I'm using subflows and their instance environment variables. How can I pass or override the instance environment variable values from another node? It looks like I could set them to reference other environment variable…

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## [Help - Managing object arrays](https://discourse.nodered.org/t/help-managing-object-arrays/10784)

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**Author:** [@freddyrm](https://discourse.nodered.org/u/freddyrm)\
**Replies:** 1\
**Last updated:** [3 May 2019 15:34 UTC](https://discourse.nodered.org/t/help-managing-object-arrays/10784 "2019-05-03T15:34:18Z")

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Hello, This is my first post and I'm new to node-red so, sorry in advance :smiley: So, heres the question: I'm getting data from a device in REST format, the messages contains data of different kinds and in a casual o…

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## [Unable to listen on http://127.0.0.1.1880](https://discourse.nodered.org/t/unable-to-listen-on-http-127-0-0-1-1880/10742)

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**Author:** [@tramanah](https://discourse.nodered.org/u/tramanah)\
**Replies:** 8\
**Last updated:** [3 May 2019 12:27 UTC](https://discourse.nodered.org/t/unable-to-listen-on-http-127-0-0-1-1880/10742 "2019-05-03T12:27:32Z")

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I am running node red in window 10. Initially, I did setup node-red in the task scheduler on boot up event. I am facing difficulty to view node-red cmd to view my console.log. Therefore I delete task scheduler. But still…

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## [Node Redundancy](https://discourse.nodered.org/t/node-redundancy/10762)

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**Author:** [@Bobo](https://discourse.nodered.org/u/Bobo)\
**Replies:** 3\
**Last updated:** [3 May 2019 10:56 UTC](https://discourse.nodered.org/t/node-redundancy/10762 "2019-05-03T10:56:46Z")

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Apologies in advance if this has already been mentioned but I thought this vid by Kurt Braun (does he live here?) would be interesting to some. It interests me but is a bit beyond my NR pay grade unfortunately. He discu…

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## [Send data to Microsoft Azure](https://discourse.nodered.org/t/send-data-to-microsoft-azure/10763)

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**Author:** [@JokinSegu](https://discourse.nodered.org/u/JokinSegu)\
**Replies:** 12\
**Last updated:** [3 May 2019 10:28 UTC](https://discourse.nodered.org/t/send-data-to-microsoft-azure/10763 "2019-05-03T10:28:00Z")

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How can I send some value that I am getting in node red to the AZURE cloud? I am trying it with a SQL database but I don´t get it.

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## [Time based nodes do not produce output](https://discourse.nodered.org/t/time-based-nodes-do-not-produce-output/10651)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 7\
**Last updated:** [3 May 2019 08:29 UTC](https://discourse.nodered.org/t/time-based-nodes-do-not-produce-output/10651 "2019-05-03T08:29:56Z")

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I have something weird going on, if I use nodes that are based on time (like light-scheduler or moment from @TotallyInformation), they do not function properly. inject -\> moment \> debug = no output when injecting light…

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## [About Light Scheduler node output frequency](https://discourse.nodered.org/t/about-light-scheduler-node-output-frequency/8694)

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**Author:** [@pictux](https://discourse.nodered.org/u/pictux)\
**Replies:** 2\
**Last updated:** [3 May 2019 08:27 UTC](https://discourse.nodered.org/t/about-light-scheduler-node-output-frequency/8694 "2019-05-03T08:27:11Z")

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Hi guys, i'm using the LightScheduler node (node-red-contrib-light-scheduler). It's possible to define the output frequency: " The output setting can be either of: "when state changes" - Will only output a msg whe…

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## [Split string coming from API](https://discourse.nodered.org/t/split-string-coming-from-api/10756)

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**Author:** [@nksky](https://discourse.nodered.org/u/nksky)\
**Replies:** 3\
**Last updated:** [3 May 2019 06:40 UTC](https://discourse.nodered.org/t/split-string-coming-from-api/10756 "2019-05-03T06:40:38Z")

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I need to split this string coming in from an API, I have tried, "Split" Node and "Switch" and tried the function node with "phrase", can anyone shed some light... Thanks in advance... Just want to extract "ts" and "v…

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## [Mqtt broker does not receive data and no generate debug message](https://discourse.nodered.org/t/mqtt-broker-does-not-receive-data-and-no-generate-debug-message/10744)

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**Author:** [@muharremsari](https://discourse.nodered.org/u/muharremsari)\
**Replies:** 13\
**Last updated:** [3 May 2019 02:00 UTC](https://discourse.nodered.org/t/mqtt-broker-does-not-receive-data-and-no-generate-debug-message/10744 "2019-05-03T02:00:57Z")

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Hi I was create flow for mqqt broker. Mqqt broker runing on win7 32bit machine. Mosquitto service is ok still runing and connected. But i can't recive an debug message or somone. What is my fault? Best regards.

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## [Develope a real hardware watchdog module, anyone interested?](https://discourse.nodered.org/t/develope-a-real-hardware-watchdog-module-anyone-interested/10379)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 31\
**Last updated:** [2 May 2019 21:24 UTC](https://discourse.nodered.org/t/develope-a-real-hardware-watchdog-module-anyone-interested/10379 "2019-05-02T21:24:13Z")

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Hi mates, we all know how uncomfortable are unexpected "hangs" of our system.. sometime even critical, and how hard is to guess what can be wrong there.. as they may happen really seldom, almost impossible to replicate, …

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## [Broke adminAuth credentialing after changing hash in settings.js](https://discourse.nodered.org/t/broke-adminauth-credentialing-after-changing-hash-in-settings-js/10753)

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**Author:** [@nicholas](https://discourse.nodered.org/u/nicholas)\
**Replies:** 3\
**Last updated:** [2 May 2019 20:08 UTC](https://discourse.nodered.org/t/broke-adminauth-credentialing-after-changing-hash-in-settings-js/10753 "2019-05-02T20:08:30Z")

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Hey guys! I needed to change the admin login credentials on our local Node-RED server for security reasons. I viewed https://nodered.org/docs/security and followed the instructions for generating a new pass hash and up…

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## [Change already installed module](https://discourse.nodered.org/t/change-already-installed-module/10738)

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**Author:** [@ma-gu-16](https://discourse.nodered.org/u/ma-gu-16)\
**Replies:** 6\
**Last updated:** [2 May 2019 19:34 UTC](https://discourse.nodered.org/t/change-already-installed-module/10738 "2019-05-02T19:34:19Z")

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Hi, i try to change or rewrite a already installed module. install path under /var/node\_modules/node-red-contrib-xxx/lib/xx.js i try to fix some stuff, but it doesnt take effekt after i saved the file. is there any n…

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