# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=840

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

**Page:** 841

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## [Maxlisteners in Logfiles?](https://discourse.nodered.org/t/maxlisteners-in-logfiles/16428)

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**Author:** [@nicedevil](https://discourse.nodered.org/u/nicedevil)\
**Replies:** 4\
**Last updated:** [7 October 2019 14:10 UTC](https://discourse.nodered.org/t/maxlisteners-in-logfiles/16428 "2019-10-07T14:10:25Z")

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Hey guys, I have a bit trouble again with my 8 shelly-plug-s. All of them send the powerusage to the mqtt broker and I have set up a Gauge and a Chart for every device and one Gauge/Chart for all of them (sum). After …

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## [Post to sql from array](https://discourse.nodered.org/t/post-to-sql-from-array/16418)

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**Author:** [@johnym30](https://discourse.nodered.org/u/johnym30)\
**Replies:** 16\
**Last updated:** [7 October 2019 13:40 UTC](https://discourse.nodered.org/t/post-to-sql-from-array/16418 "2019-10-07T13:40:23Z")

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hi everyone. Once more as i have just started using node red and i am not a programmer, i have some questions. I have the flow below \[{"id":"42edc0b9.7ba91","type":"tab","label":"Flow 2","disabled":false,"info":""},{"…

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## [How do I use a variable in an object path with JSONata](https://discourse.nodered.org/t/how-do-i-use-a-variable-in-an-object-path-with-jsonata/16283)

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**Author:** [@Jamie](https://discourse.nodered.org/u/Jamie)\
**Replies:** 2\
**Last updated:** [7 October 2019 12:36 UTC](https://discourse.nodered.org/t/how-do-i-use-a-variable-in-an-object-path-with-jsonata/16283 "2019-10-07T12:36:27Z")

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I'm using the code below in a Change Node using JSONata to structure MySQL data to send to a graph node. Is there any way for me to add the column name into the object path from a flow variable? \[ { "series": \["B"\], …

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## [Example of using node-red-contrib-openid node](https://discourse.nodered.org/t/example-of-using-node-red-contrib-openid-node/16414)

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**Author:** [@artekw](https://discourse.nodered.org/u/artekw)\
**Replies:** 0\
**Last updated:** [7 October 2019 09:02 UTC](https://discourse.nodered.org/t/example-of-using-node-red-contrib-openid-node/16414 "2019-10-07T09:02:57Z")

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Hello, Can anyone share a flow of use node-red-contrib-openid node ?

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## [S7-1200 read variable](https://discourse.nodered.org/t/s7-1200-read-variable/16183)

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**Author:** [@digidax](https://discourse.nodered.org/u/digidax)\
**Replies:** 15\
**Last updated:** [7 October 2019 06:55 UTC](https://discourse.nodered.org/t/s7-1200-read-variable/16183 "2019-10-07T06:55:49Z")

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Hello, Have started for my first project with node red: System: CentOS 7 Nodejs: 2:10.16.3 Node Red: v1.0.0 S7-1200 CPU1214C, Firmware 4.1 Have configured S7In from node-red-contrib-s7 and connected to debug in Flo…

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## [Node-Red in Endless-Loop](https://discourse.nodered.org/t/node-red-in-endless-loop/16394)

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**Author:** [@little.yoda](https://discourse.nodered.org/u/little.yoda)\
**Replies:** 3\
**Last updated:** [7 October 2019 05:23 UTC](https://discourse.nodered.org/t/node-red-in-endless-loop/16394 "2019-10-07T05:23:38Z")

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Hi my Node-Red is caught in an endless-loop. The syslog file is flooded with the messages below. Is there an easy way to identify "function:5bb23ebd.29c638"? I'm aware of the --safe parameter, but as I have over 20 fl…

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## [Problems with chart node (multiple lines)](https://discourse.nodered.org/t/problems-with-chart-node-multiple-lines/16380)

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**Author:** [@WhiteLion](https://discourse.nodered.org/u/WhiteLion)\
**Replies:** 3\
**Last updated:** [6 October 2019 21:14 UTC](https://discourse.nodered.org/t/problems-with-chart-node-multiple-lines/16380 "2019-10-06T21:14:09Z")

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I got no success with a chart, using multiple lines. Maybe some can help. This is what I have: picture 1 picture 2 var dataArray = \[\[\]\]; var seriesArray = \[\]; var labelsArray = \[""\]; for (i=0; i\< 5; i++) { var…

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## [OPCUA IIoT injector Properties is blanked](https://discourse.nodered.org/t/opcua-iiot-injector-properties-is-blanked/16392)

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**Author:** [@Hoddor](https://discourse.nodered.org/u/Hoddor)\
**Replies:** 1\
**Last updated:** [6 October 2019 17:53 UTC](https://discourse.nodered.org/t/opcua-iiot-injector-properties-is-blanked/16392 "2019-10-06T17:53:59Z")

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Hi guys. I have project using Node-red. I need to make some OPCUA Server and do something with it. But 'OPCUA IIoT Inject' has no properties. I have to put some properties in Properties section. but it's blanked. noth…

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## [Modify multiple nodes from single UI control](https://discourse.nodered.org/t/modify-multiple-nodes-from-single-ui-control/1164)

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**Author:** [@igrowing](https://discourse.nodered.org/u/igrowing)\
**Replies:** 10\
**Last updated:** [6 October 2019 16:49 UTC](https://discourse.nodered.org/t/modify-multiple-nodes-from-single-ui-control/1164 "2019-10-06T16:49:57Z")

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Hi guys, The Timer with UI feedback is progressing. I used 4 such times in a flow. The timer is based on scheduler of BigTimer by Peter Scargill. Now I’m adding “Correction” control. It’s a numeric UI input which shoul…

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## [Searching for help to read status of Edimax Smartplug](https://discourse.nodered.org/t/searching-for-help-to-read-status-of-edimax-smartplug/15789)

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**Author:** [@Harpau](https://discourse.nodered.org/u/Harpau)\
**Replies:** 6\
**Last updated:** [6 October 2019 15:11 UTC](https://discourse.nodered.org/t/searching-for-help-to-read-status-of-edimax-smartplug/15789 "2019-10-06T15:11:49Z")

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I would like to read the status of my Edimax SP-2101W Smartplugs. They have firmware 3.00 installed. Unfortunately the node "node-red-contrib-smartplug" seems not to be working. Can anybody help me? Many thanks! Haral…

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## [Access global context from settings.js](https://discourse.nodered.org/t/access-global-context-from-settings-js/16359)

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**Author:** [@episensor](https://discourse.nodered.org/u/episensor)\
**Replies:** 10\
**Last updated:** [6 October 2019 12:22 UTC](https://discourse.nodered.org/t/access-global-context-from-settings-js/16359 "2019-10-06T12:22:54Z")

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Use case is for building a simple middleware that can validate a Bearer token on a websockets connection, so the initial connection can be rejected if verification fails. Token is stored in global context. Thanks!

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## [Debug Node / Window: No Show - Solved](https://discourse.nodered.org/t/debug-node-window-no-show-solved/16348)

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**Author:** [@n61ab](https://discourse.nodered.org/u/n61ab)\
**Replies:** 9\
**Last updated:** [6 October 2019 12:02 UTC](https://discourse.nodered.org/t/debug-node-window-no-show-solved/16348 "2019-10-06T12:02:51Z")

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Upgraded to Node-Red v1.0.0 Now, I cannot see the output from the "Debug" node in the Debug Message Window. Is there a new setting somewhere? Alan

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## [Voltage/Current readings from Sonoff POW R2 with Tasmota to Dashboard](https://discourse.nodered.org/t/voltage-current-readings-from-sonoff-pow-r2-with-tasmota-to-dashboard/16377)

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**Author:** [@finch6](https://discourse.nodered.org/u/finch6)\
**Replies:** 4\
**Last updated:** [6 October 2019 11:57 UTC](https://discourse.nodered.org/t/voltage-current-readings-from-sonoff-pow-r2-with-tasmota-to-dashboard/16377 "2019-10-06T11:57:10Z")

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Hi All, I am EXTREMELY new to MQTT, Node Red and this world. But I want to learn and I thought this would be the best place for advise? I have a MQTT Broker and Node Red set up on a pi and that is running perfectly. I …

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## [More Chart questions - sorry folks](https://discourse.nodered.org/t/more-chart-questions-sorry-folks/1822)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 27\
**Last updated:** [6 October 2019 10:24 UTC](https://discourse.nodered.org/t/more-chart-questions-sorry-folks/1822 "2019-10-06T10:24:51Z")

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Ok, so Nick has REALLY helped me with my silly mistakes. I've been reading from these sites: Site 1 Site 2 So if I want MULTIPLE lines on a chart I need to set the TOPIC as well. Ok. Not too difficult, and I have o…

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## [Using Data stored in a message for a function](https://discourse.nodered.org/t/using-data-stored-in-a-message-for-a-function/16208)

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**Author:** [@Navybrandon](https://discourse.nodered.org/u/Navybrandon)\
**Replies:** 7\
**Last updated:** [6 October 2019 10:11 UTC](https://discourse.nodered.org/t/using-data-stored-in-a-message-for-a-function/16208 "2019-10-06T10:11:29Z")

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Hello everyone again. I was wondering how to call upon data that is my msg.object when my function is already using the msg.payload for something else. my goal here is to have the values auto-fill if you will based on th…

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## [Access Dashboard via Android app](https://discourse.nodered.org/t/access-dashboard-via-android-app/16343)

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**Author:** [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Replies:** 15\
**Last updated:** [5 October 2019 21:41 UTC](https://discourse.nodered.org/t/access-dashboard-via-android-app/16343 "2019-10-05T21:41:12Z")

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Hi folks, There are already lots if other discussions about this, but I cannot see the trees in the forest anymore... Last month I have wired a lot of electronics to my Node-RED, so suddenly the wife and children want …

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## [Read and test the value of a property inside an object that is inside another object](https://discourse.nodered.org/t/read-and-test-the-value-of-a-property-inside-an-object-that-is-inside-another-object/16313)

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**Author:** [@GiovanniG](https://discourse.nodered.org/u/GiovanniG)\
**Replies:** 7\
**Last updated:** [5 October 2019 20:59 UTC](https://discourse.nodered.org/t/read-and-test-the-value-of-a-property-inside-an-object-that-is-inside-another-object/16313 "2019-10-05T20:59:12Z")

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Hi, maybe a stupid question but I don't know how to ask Google about it, thanks for help. I have this object= msg = {payload:{condition:true}} (I hope to had written it correctly) I want to test the condition, but this…

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## [Storing energy data](https://discourse.nodered.org/t/storing-energy-data/14203)

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**Author:** [@MeisterQ](https://discourse.nodered.org/u/MeisterQ)\
**Replies:** 52\
**Last updated:** [5 October 2019 18:58 UTC](https://discourse.nodered.org/t/storing-energy-data/14203 "2019-10-05T18:58:10Z")

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Hey, im having the problem right now, that i need to store data in some kind. Im using shelly devices with MQTT, so its reporting its total energy consumption via a /energy topic. But this amount is only from "powerin…

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## [I2C on Raspi3 + Buster + nodered 1.0 : help needed](https://discourse.nodered.org/t/i2c-on-raspi3-buster-nodered-1-0-help-needed/16361)

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**Author:** [@jjs](https://discourse.nodered.org/u/jjs)\
**Replies:** 1\
**Last updated:** [5 October 2019 19:26 UTC](https://discourse.nodered.org/t/i2c-on-raspi3-buster-nodered-1-0-help-needed/16361 "2019-10-05T19:26:03Z")

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Dear all, I have a vergin setup Raspi3 + Buster + nodered 1.0 I2C enabled, PCA9685 module connected (at default 0x40): i2cdetect reports 0x40. A "node-red-contrib-i2c" "scan" in node red comes back with 64 and 128, wh…

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## [Help trying to extract object attribute](https://discourse.nodered.org/t/help-trying-to-extract-object-attribute/16357)

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**Author:** [@subjectbit](https://discourse.nodered.org/u/subjectbit)\
**Replies:** 6\
**Last updated:** [5 October 2019 18:55 UTC](https://discourse.nodered.org/t/help-trying-to-extract-object-attribute/16357 "2019-10-05T18:55:15Z")

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Hi all - I'm trying to implement a facial recognition workflow that announces who has entered an area after image processing is applied via Facebox. I've gotten Facebox to work fine and see attribute object passed in th…

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## [Bug in RBE node?](https://discourse.nodered.org/t/bug-in-rbe-node/14289)

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**Author:** [@ianmacs](https://discourse.nodered.org/u/ianmacs)\
**Replies:** 8\
**Last updated:** [5 October 2019 13:14 UTC](https://discourse.nodered.org/t/bug-in-rbe-node/14289 "2019-10-05T13:14:39Z")

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The rbe node has a mode "block if value change greater than". (It also as a similar "greater or equal" mode, but here I am referring explicitly to the "greater than" mode only, without any "or equal" addition.) I want …

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## [NodeRed SSL not working](https://discourse.nodered.org/t/nodered-ssl-not-working/16340)

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**Author:** [@Arm555](https://discourse.nodered.org/u/Arm555)\
**Replies:** 1\
**Last updated:** [5 October 2019 12:22 UTC](https://discourse.nodered.org/t/nodered-ssl-not-working/16340 "2019-10-05T12:22:02Z")

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Trying to setup SSL for my nodered docker instance. I have followed this guide to the letter, and in the FQDN i used only my IP no port and no https:// before hand, is this correct? http://www.steves-internet-guide.com/…

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## [Unable to start node-red Windows](https://discourse.nodered.org/t/unable-to-start-node-red-windows/16315)

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**Author:** [@iungo](https://discourse.nodered.org/u/iungo)\
**Replies:** 2\
**Last updated:** [5 October 2019 11:18 UTC](https://discourse.nodered.org/t/unable-to-start-node-red-windows/16315 "2019-10-05T11:18:20Z")

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After start node-red I see the next error. How to solve it? 4 Oct 15:30:41 - Error: The module '\\\\?\\C:\\Users\\DELL\\.node-red\\node\_modules\\serialport\\build\\Release\\serialport.node' was compiled against a different Node.j…

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## [Efficient way to download file](https://discourse.nodered.org/t/efficient-way-to-download-file/16163)

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**Author:** [@Abraxas](https://discourse.nodered.org/u/Abraxas)\
**Replies:** 3\
**Last updated:** [5 October 2019 07:43 UTC](https://discourse.nodered.org/t/efficient-way-to-download-file/16163 "2019-10-05T07:43:36Z")

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Hi all, I'm new to Node-RED and this community; I'm trying to develop my first project and I need some help: in my project I collect some buffers of data in csv files via MQTT; after that, I expose with Node RED a web p…

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## [Make an ARRAY after a text input node.](https://discourse.nodered.org/t/make-an-array-after-a-text-input-node/16236)

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**Author:** [@Nodeblue](https://discourse.nodered.org/u/Nodeblue)\
**Replies:** 18\
**Last updated:** [5 October 2019 01:06 UTC](https://discourse.nodered.org/t/make-an-array-after-a-text-input-node/16236 "2019-10-05T01:06:31Z")

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Hi, I'm a lost beginner. Want to join 14 text input node to an ARRAY to send to an S7 PLC. ARRAY should be updated immediately when any of the text input node is updated. ARRAY looks like this: {"signal":"Av-restid",…

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## [Debug node name is not displayed in debug sidebar if debug node is used in a subflow even it is named correctly](https://discourse.nodered.org/t/debug-node-name-is-not-displayed-in-debug-sidebar-if-debug-node-is-used-in-a-subflow-even-it-is-named-correctly/16309)

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**Author:** [@fangzhu](https://discourse.nodered.org/u/fangzhu)\
**Replies:** 3\
**Last updated:** [5 October 2019 00:54 UTC](https://discourse.nodered.org/t/debug-node-name-is-not-displayed-in-debug-sidebar-if-debug-node-is-used-in-a-subflow-even-it-is-named-correctly/16309 "2019-10-05T00:54:58Z")

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I am using 1.0.0. I found that if I put a debug node inside a subflow with a name, the node name is not displayed in the debug sidebar, instead nodeid is displayed.

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## [Global memory updates even if I don't "save" back to it](https://discourse.nodered.org/t/global-memory-updates-even-if-i-dont-save-back-to-it/16326)

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**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 4\
**Last updated:** [5 October 2019 00:49 UTC](https://discourse.nodered.org/t/global-memory-updates-even-if-i-dont-save-back-to-it/16326 "2019-10-05T00:49:52Z")

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Hi! Please help me understand the problem here. I have this function node: var Notifications = global.get("Active\_Notifications") delete Notifications.RearPumpFail.Acknowledged return; In my mind, this should not chan…

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## [Link node not working on 1.0 Release](https://discourse.nodered.org/t/link-node-not-working-on-1-0-release/16339)

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**Author:** [@lizzardguki](https://discourse.nodered.org/u/lizzardguki)\
**Replies:** 2\
**Last updated:** [5 October 2019 00:40 UTC](https://discourse.nodered.org/t/link-node-not-working-on-1-0-release/16339 "2019-10-05T00:40:35Z")

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Tried using link node in the latest version, it doesn\`t show any of the already deployed in/out nodes, can someone check it out? I do not want to do a network-wide update until I realize is this happening only to me or n…

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## [Random and expensive relay behavior](https://discourse.nodered.org/t/random-and-expensive-relay-behavior/16276)

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**Author:** [@Poodlepapa](https://discourse.nodered.org/u/Poodlepapa)\
**Replies:** 5\
**Last updated:** [4 October 2019 22:27 UTC](https://discourse.nodered.org/t/random-and-expensive-relay-behavior/16276 "2019-10-04T22:27:26Z")

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I am having a problem with a new build. I made a controller to for lights and 3 sprinkler heads. the lights work fine but I have this very strange transient activation of the sprinklers. It happens after I start any of …

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## [How to create logfile when running in docker/kubernetes?](https://discourse.nodered.org/t/how-to-create-logfile-when-running-in-docker-kubernetes/15266)

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**Author:** [@auberger](https://discourse.nodered.org/u/auberger)\
**Replies:** 1\
**Last updated:** [4 October 2019 20:56 UTC](https://discourse.nodered.org/t/how-to-create-logfile-when-running-in-docker-kubernetes/15266 "2019-10-04T20:56:24Z")

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Hi all, I want to setup a new Node-RED instance with kubernetes (Microk8s) and docker. I got it running using a directory on the host for /data. However, I don't know how to redirect the console output into a logfile th…

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