# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=921

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

**Page:** 922

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## [SMS app using node red](https://discourse.nodered.org/t/sms-app-using-node-red/6897)

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**Author:** [@RahulMathavan](https://discourse.nodered.org/u/RahulMathavan)\
**Replies:** 1\
**Last updated:** [17 January 2019 07:39 UTC](https://discourse.nodered.org/t/sms-app-using-node-red/6897 "2019-01-17T07:39:04Z")

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I am trying to create an SMS app, I need to build the SMS AT command...I saw a post in a website they have used serial port. But they used raspberry pi and portable wifi dongle. Here I am using only node red and a wifi c…

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## [COAP server with node-red](https://discourse.nodered.org/t/coap-server-with-node-red/6898)

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**Author:** [@manal](https://discourse.nodered.org/u/manal)\
**Replies:** 0\
**Last updated:** [17 January 2019 03:15 UTC](https://discourse.nodered.org/t/coap-server-with-node-red/6898 "2019-01-17T03:15:39Z")

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Hi All, I want to run CoAP server in raspberry pi where I installed the node-red, I found that there is a node for MQTT broker, so is there any node for CoAP server? or I should install it separately as software. Tha…

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## [Operator && doesn't work, unbelievable](https://discourse.nodered.org/t/operator-doesnt-work-unbelievable/6843)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 10\
**Last updated:** [16 January 2019 20:49 UTC](https://discourse.nodered.org/t/operator-doesnt-work-unbelievable/6843 "2019-01-16T20:49:22Z")

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Hi everone, I have this semplified code, I omiss the list of commands, ony the condition: var IO1\_0 = 1; if (IO1\_0 && 0) I have false, ok if (IO1\_0 && 1) I have true ok if (IO1\_0 && 2) I have true WHY? if (IO1\_0 …

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## [Unable to use oracledb node](https://discourse.nodered.org/t/unable-to-use-oracledb-node/6886)

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**Author:** [@tomasjuarez](https://discourse.nodered.org/u/tomasjuarez)\
**Replies:** 2\
**Last updated:** [16 January 2019 18:05 UTC](https://discourse.nodered.org/t/unable-to-use-oracledb-node/6886 "2019-01-16T18:05:35Z")

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Hi! This is my first day using node-RED, so I'm really new. I'm trying to use the oracledb node to perform some inserts into a table. Just a very simple try. The insert is working, but the problem is that bind variable…

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## [Sub flow management](https://discourse.nodered.org/t/sub-flow-management/6879)

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**Author:** [@Lionel](https://discourse.nodered.org/u/Lionel)\
**Replies:** 1\
**Last updated:** [16 January 2019 09:28 UTC](https://discourse.nodered.org/t/sub-flow-management/6879 "2019-01-16T09:28:03Z")

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Hi, In a project, we have created many sub flows dedicated to a feature, and all our projects need this feature. So is it possible to share sub flows from a project to an another ?

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## [Is there a way to insert a break row in the label programmatically?](https://discourse.nodered.org/t/is-there-a-way-to-insert-a-break-row-in-the-label-programmatically/6852)

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**Author:** [@gbove73](https://discourse.nodered.org/u/gbove73)\
**Replies:** 2\
**Last updated:** [16 January 2019 08:36 UTC](https://discourse.nodered.org/t/is-there-a-way-to-insert-a-break-row-in-the-label-programmatically/6852 "2019-01-16T08:36:41Z")

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Hi all, Is there a way to insert a break row in the label programmatically? for exampe: label: this.name + "\\n" + this.otherattribute Thanks in advance.

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## [Mosquitto Log Files missing](https://discourse.nodered.org/t/mosquitto-log-files-missing/6860)

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**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 4\
**Last updated:** [16 January 2019 07:11 UTC](https://discourse.nodered.org/t/mosquitto-log-files-missing/6860 "2019-01-16T07:11:41Z")

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I have been chasing down some duplicate client names on my MQTT devices, and frequently looking at the logfile: /var/log/mosquitto/mosquitto.log. However, today I noticed that the log file is simply missing. No file. …

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## [Cannot GET /mysite](https://discourse.nodered.org/t/cannot-get-mysite/6859)

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**Author:** [@ukjay](https://discourse.nodered.org/u/ukjay)\
**Replies:** 3\
**Last updated:** [15 January 2019 23:31 UTC](https://discourse.nodered.org/t/cannot-get-mysite/6859 "2019-01-15T23:31:55Z")

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Newbie here again I have searched & dabbled trying to get this working again http://localhost:1880/mysite mysite being a flow with a suitable http in like /tweetwx but getting cannot GET /tweetwx or whatever the url…

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## [Xml2js problem registering](https://discourse.nodered.org/t/xml2js-problem-registering/6831)

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**Author:** [@ukjay](https://discourse.nodered.org/u/ukjay)\
**Replies:** 8\
**Last updated:** [15 January 2019 17:26 UTC](https://discourse.nodered.org/t/xml2js-problem-registering/6831 "2019-01-15T17:26:06Z")

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I'm not having any luck installing xml2js Can you help? Here is some info :-1: This is the flow address BBC Weather To Twitter https://flows.nodered.org/flow/0d98ac57a6ebf724def9 It requires xml2js, I've installed…

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## [Function to Convert 16 bit HEX value to float value](https://discourse.nodered.org/t/function-to-convert-16-bit-hex-value-to-float-value/6826)

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**Author:** [@bidyutper](https://discourse.nodered.org/u/bidyutper)\
**Replies:** 1\
**Last updated:** [15 January 2019 16:18 UTC](https://discourse.nodered.org/t/function-to-convert-16-bit-hex-value-to-float-value/6826 "2019-01-15T16:18:38Z")

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Hi!! I have a piece of code wriiten in c. How to do this in Node red function: Blockquote poutbuf\[1\] = FD; pOutbuf\[2\] = 6F; { short signal; float fsignal; signal = (short)(pOutbuf\[1\]\<\<8); signal += (short)(pOu…

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## [Exporting flows to external tools](https://discourse.nodered.org/t/exporting-flows-to-external-tools/6794)

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**Author:** [@mbenson](https://discourse.nodered.org/u/mbenson)\
**Replies:** 1\
**Last updated:** [15 January 2019 16:11 UTC](https://discourse.nodered.org/t/exporting-flows-to-external-tools/6794 "2019-01-15T16:11:22Z")

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I am completely new to Node Red but fairly experienced with Node. Is it reasonably feasible to write a plugin that reads a flow and exports it to a dissimilar file format? I have a software package that is fully functi…

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## [Multiple Flows "Execute" After I Deploy](https://discourse.nodered.org/t/multiple-flows-execute-after-i-deploy/6751)

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**Author:** [@Inshakoor](https://discourse.nodered.org/u/Inshakoor)\
**Replies:** 9\
**Last updated:** [15 January 2019 16:03 UTC](https://discourse.nodered.org/t/multiple-flows-execute-after-i-deploy/6751 "2019-01-15T16:03:12Z")

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Hey all, I'm a new Node-Red user and have had some guidance from a friend to get me going. I'm running the latest v8 version of Node-Red, Mosquitto Eclipse MQTT, and Homeseer (for my Z-wave devices). I've searched the …

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## [Motor Shields and Node Red](https://discourse.nodered.org/t/motor-shields-and-node-red/6676)

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**Author:** [@WillWelker](https://discourse.nodered.org/u/WillWelker)\
**Replies:** 10\
**Last updated:** [15 January 2019 15:57 UTC](https://discourse.nodered.org/t/motor-shields-and-node-red/6676 "2019-01-15T15:57:42Z")

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I think Node Red has broad applications in robotics and I was wondering if anyone can recommend some good motor shields that play nice with Node Red. Currently I am using Arduino over serial which works but it would be …

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## [Node Creation Questions](https://discourse.nodered.org/t/node-creation-questions/6830)

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**Author:** [@leedeokhee](https://discourse.nodered.org/u/leedeokhee)\
**Replies:** 2\
**Last updated:** [15 January 2019 12:43 UTC](https://discourse.nodered.org/t/node-creation-questions/6830 "2019-01-15T12:43:29Z")

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Hello, I have a question. If there are many nodes provided by Node-RED, can a person or company create nodes apart from these nodes? with his property.

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## [Node-red ended with exception](https://discourse.nodered.org/t/node-red-ended-with-exception/6825)

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**Author:** [@Hjh58](https://discourse.nodered.org/u/Hjh58)\
**Replies:** 2\
**Last updated:** [15 January 2019 12:10 UTC](https://discourse.nodered.org/t/node-red-ended-with-exception/6825 "2019-01-15T12:10:59Z")

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I am using the ping node for checking nodes to be alive. he error message: Jan 05:52:22 - Error: spawn ENOMEM at ChildProcess.spawn (internal/child\_process.js:372:11) at spawn (child\_process.js:544:9) at Timeout.\_onT…

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## [Cannot start Node-RED on MSYS2](https://discourse.nodered.org/t/cannot-start-node-red-on-msys2/6735)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 3\
**Last updated:** [15 January 2019 00:50 UTC](https://discourse.nodered.org/t/cannot-start-node-red-on-msys2/6735 "2019-01-15T00:50:28Z")

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Hi folks, I'm have been trying to debug FFmpeg to help somebody with another discussion. But no luck until now: I have installed MSYS2, VSCode, ... following this tutorial. Btw if anybody ever wants to reproduce it,…

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## [Storing an index by a counter](https://discourse.nodered.org/t/storing-an-index-by-a-counter/6808)

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**Author:** [@fabien](https://discourse.nodered.org/u/fabien)\
**Replies:** 1\
**Last updated:** [14 January 2019 22:16 UTC](https://discourse.nodered.org/t/storing-an-index-by-a-counter/6808 "2019-01-14T22:16:46Z")

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hello, I will need help, the goal of the program is to store a counter index to prevent each node red start or redeploy, indexe starts to zero. I tried several solutions without success the storage keeps the value …

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## [Node-red-contrib-dsm question](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585)

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**Author:** [@jupiter8](https://discourse.nodered.org/u/jupiter8)\
**Replies:** 7\
**Last updated:** [14 January 2019 16:51 UTC](https://discourse.nodered.org/t/node-red-contrib-dsm-question/6585 "2019-01-14T16:51:06Z")

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This is an awsome node, i'm really enjoying the contex storage example to monitor some real world machine running time . But pushing things a little bit further i'd like to modify the rising edge counter to be persisent …

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## [Node red Azure IOT Hub Registry](https://discourse.nodered.org/t/node-red-azure-iot-hub-registry/6799)

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**Author:** [@ers](https://discourse.nodered.org/u/ers)\
**Replies:** 0\
**Last updated:** [14 January 2019 15:58 UTC](https://discourse.nodered.org/t/node-red-azure-iot-hub-registry/6799 "2019-01-14T15:58:52Z")

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When I try to register my device to Azure IOT Hub using the 'Azure IOT Hub Registry' Block, I get the following error message: Error while trying to create a new device: UnauthorizedError: Unauthorized My inject node h…

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## [Gas smoke sensor MAX6675, pressure sensor, arduino and raspberry pi](https://discourse.nodered.org/t/gas-smoke-sensor-max6675-pressure-sensor-arduino-and-raspberry-pi/6540)

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**Author:** [@ole88](https://discourse.nodered.org/u/ole88)\
**Replies:** 13\
**Last updated:** [14 January 2019 14:56 UTC](https://discourse.nodered.org/t/gas-smoke-sensor-max6675-pressure-sensor-arduino-and-raspberry-pi/6540 "2019-01-14T14:56:01Z")

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Hi. At home we have wood heating system. I wish to display the smoke gas temperature on my node-red dashboard in form of a gauge. I want it connected to my raspberry pi. I have a smoke gas sensor called MAX6675 who wor…

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## [Http request from a local node-red machine](https://discourse.nodered.org/t/http-request-from-a-local-node-red-machine/6776)

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**Author:** [@ALOKA1432](https://discourse.nodered.org/u/ALOKA1432)\
**Replies:** 13\
**Last updated:** [14 January 2019 09:54 UTC](https://discourse.nodered.org/t/http-request-from-a-local-node-red-machine/6776 "2019-01-14T09:54:06Z")

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How can one allow the cloud hosted Node-RED web server to be accessible through http in in a local Node-RED machine?

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## [Raspbian node-red stop job is running](https://discourse.nodered.org/t/raspbian-node-red-stop-job-is-running/6749)

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**Author:** [@wb666greene](https://discourse.nodered.org/u/wb666greene)\
**Replies:** 4\
**Last updated:** [14 January 2019 02:01 UTC](https://discourse.nodered.org/t/raspbian-node-red-stop-job-is-running/6749 "2019-01-14T02:01:35Z")

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Having weird issues, while troubleshooting I'm rebooting/shutting down the pi a lot and I notice it "hangs" for almost 2 minutes with this "A stop job is running for node-red graphical event wiring tool" and some kind of…

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## [Tcp out is eating some of my messages](https://discourse.nodered.org/t/tcp-out-is-eating-some-of-my-messages/6603)

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**Author:** [@superace](https://discourse.nodered.org/u/superace)\
**Replies:** 8\
**Last updated:** [14 January 2019 00:30 UTC](https://discourse.nodered.org/t/tcp-out-is-eating-some-of-my-messages/6603 "2019-01-14T00:30:19Z")

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Hi I probably facing something really simple but I just can't get a grip on it. Let me first explain what is working: I can use 'Injection' to send a string of 17 Ascii characters to a 'TCP out' node. They arrive "on …

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## [Question : function node](https://discourse.nodered.org/t/question-function-node/6763)

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**Author:** [@MPopti0n](https://discourse.nodered.org/u/MPopti0n)\
**Replies:** 2\
**Last updated:** [13 January 2019 22:29 UTC](https://discourse.nodered.org/t/question-function-node/6763 "2019-01-13T22:29:29Z")

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Hi, it maybe is a dumb question but here goes! My function node is reciving a message like this : { "\_msgid":"fd517150.49f97", "topic":"", "payload":"Blablabla", "Appareil":"G102\_G008\_L308" } On the other side of th…

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## [Node-red influxdb json insert](https://discourse.nodered.org/t/node-red-influxdb-json-insert/6718)

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**Author:** [@turkdoktoru](https://discourse.nodered.org/u/turkdoktoru)\
**Replies:** 27\
**Last updated:** [13 January 2019 21:47 UTC](https://discourse.nodered.org/t/node-red-influxdb-json-insert/6718 "2019-01-13T21:47:28Z")

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Hello friends, I'm sending a json line as follows. mqtt broker takes this line and translates as json. Then I want to save the line that I translated into influxdb but don't save it? Json string: { "nodename": "cihaz1…

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## [Read and write a json file - solved](https://discourse.nodered.org/t/read-and-write-a-json-file-solved/6725)

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**Author:** [@Florian75](https://discourse.nodered.org/u/Florian75)\
**Replies:** 9\
**Last updated:** [13 January 2019 19:47 UTC](https://discourse.nodered.org/t/read-and-write-a-json-file-solved/6725 "2019-01-13T19:47:21Z")

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Hello all, I have the following problem: a reed-sensor is connected to the oil valve of my central heating. So i can receive via MQTT a "1", for oil burner is on and a "0", for oil burner is off. Now i would like to op…

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## [Wrong state change](https://discourse.nodered.org/t/wrong-state-change/6741)

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**Author:** [@GridexX](https://discourse.nodered.org/u/GridexX)\
**Replies:** 8\
**Last updated:** [13 January 2019 19:19 UTC](https://discourse.nodered.org/t/wrong-state-change/6741 "2019-01-13T19:19:13Z")

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Hello Everybody :smile: ! I'm a new user of node-red and I need some help about a project :slight\_smile: I try to make my Connected Lamp Xiaomi yeelight reacting to an incoming notification on my android phone. I hav…

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## [Solar Tracker to control linear actuator](https://discourse.nodered.org/t/solar-tracker-to-control-linear-actuator/6407)

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**Author:** [@Cormad](https://discourse.nodered.org/u/Cormad)\
**Replies:** 19\
**Last updated:** [13 January 2019 15:35 UTC](https://discourse.nodered.org/t/solar-tracker-to-control-linear-actuator/6407 "2019-01-13T15:35:18Z")

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Hey all, I need a bit of input to help my brother with a project. Is it even possible and is Node-Red the best solution ? We want control a linear actuator to move a solar array through out the day. The actuator is con…

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## [Installing Node Red on freenas](https://discourse.nodered.org/t/installing-node-red-on-freenas/6706)

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**Author:** [@Dayve](https://discourse.nodered.org/u/Dayve)\
**Replies:** 11\
**Last updated:** [12 January 2019 15:29 UTC](https://discourse.nodered.org/t/installing-node-red-on-freenas/6706 "2019-01-12T15:29:47Z")

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I have Node Red running on one server and would like to move everything over to my FreeNAS. Node Red is installed and working on the new server but I can not install nodes or update any. I get a error like: Failed to u…

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## [I see no difference in authentication](https://discourse.nodered.org/t/i-see-no-difference-in-authentication/6710)

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**Author:** [@elpiedras](https://discourse.nodered.org/u/elpiedras)\
**Replies:** 3\
**Last updated:** [12 January 2019 14:47 UTC](https://discourse.nodered.org/t/i-see-no-difference-in-authentication/6710 "2019-01-12T14:47:30Z")

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I'm running node-red in a RPI3 and I have followed the https://nodered.org/docs/security#generating-the-password-hash tutorial, modified the setting.js file and still, I see no difference when accessing the website. I'm …

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