Automation - Node-Red - Revision history

Tinker: /* Another Note: If you find that you've outgrown Node-Reds available environment space... */

2025-11-23T02:18:51Z

Another Note: If you find that you've outgrown Node-Reds available environment space...

← Older revision		Revision as of 22:18, 22 November 2025
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	You can try editing line 16 of <code>/lib/systemd/system/nodered.service</code> and change the number 256 to something larger. (within as-yet undetermined limits...)		You can try editing line 16 of <code>/lib/systemd/system/nodered.service</code> and change the number 256 to something larger. (within as-yet undetermined limits...)

			Apparently, another symptom you need to do this is when you start randomly losing connection to the dashboard.

	==== make the two scripts executable ====		==== make the two scripts executable ====

Tinker at 05:38, 3 September 2025

2025-09-03T05:38:45Z

← Older revision		Revision as of 01:38, 3 September 2025
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	{{!}}- --="" debian=""		{{!}}- --="" debian=""
	{{!}} style="text-align: center; width: 60px;" {{!}} [[File:Logo Debian.png{{!}}60px{{!}}link=https://www.debian.org/{{!}}center{{!}}middle{{!}}frameless]]		{{!}} style="text-align: center; width: 60px;" {{!}} [[File:Logo Debian.png{{!}}60px{{!}}link=https://www.debian.org/{{!}}center{{!}}middle{{!}}frameless]]
	{{!}} style="text-align: center; width: 40px;" {{!}} 11 (~~bullseye~~)		{{!}} style="text-align: center; width: 40px;" {{!}} 12 (bookworm)
	{{!}}		{{!}}

Tinker: /* Start by installing nodejs and the javascript package manager (npm) */

2023-03-07T20:39:24Z

Start by installing nodejs and the javascript package manager (npm)

← Older revision		Revision as of 16:39, 7 March 2023
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	[[Getting up-to-date NodeJS & NPM{{!}}I have found a procedure that seems to work]]		[[Getting up-to-date NodeJS & NPM{{!}}I have found a procedure that seems to work]]
	~~<span style="color:#8B0082">'''NOTE:''' The Ubunto repositories serve up an outdated version of Node.js. (v10.19.0)</span>~~

	~~<span style="color:#8B0082">Node-Red 2 requires v12... (and apparently, soon to require newer than that...)</span>~~

	~~[[Getting nodejs v12{{!}}Getting nodejs v12]]~~

	~~<span style="color:#8B0082">To determine what version you actually have once it's installed:</span>~~
	* <code><span style="color:#8B0082">nodejs -v</span></code>
	~~Anywho...~~
	* <code>sudo apt install nodejs -y</code>
	* <code>sudo apt-get install -y build-essential</code>
	* <code>sudo apt install npm -y</code>
	*<span style="text-decoration: line-through;"> <code>sudo npm install npm@latest -g</code></span>
	** <span style="color: rgb(224, 62, 45);">'''NO! DO NOT UPDATE NPM!'''</span>
	** (Doesn't actually seem to change anything on Debian... Updates to 8.3.0 on Ubuntu.)

	=== Use npm to install Node-RED ===		=== Use npm to install Node-RED ===

Tinker: /* Installing Node-Red */

2023-03-07T20:35:11Z

Installing Node-Red

← Older revision		Revision as of 16:35, 7 March 2023
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	== Installing Node-Red ==		== Installing Node-Red ==
	=== Start by installing nodejs and the javascript package manager (npm) ===		=== Start by installing nodejs and the javascript package manager (npm) ===

			<span style="color: rgb(186, 55, 42);" >'''FFFfffuuuuuu...'''</span>

			nodejs & npm versions are problematic.

			For some reason, the versions available in all of the repositories tend to be out of date AND all attempts to update them fail in weird & wonderful ways.

			[[Getting up-to-date NodeJS & NPM{{!}}I have found a procedure that seems to work]]
	<span style="color:#8B0082">'''NOTE:''' The Ubunto repositories serve up an outdated version of Node.js. (v10.19.0)</span>		<span style="color:#8B0082">'''NOTE:''' The Ubunto repositories serve up an outdated version of Node.js. (v10.19.0)</span>

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	* <code>sudo apt install npm -y</code>		* <code>sudo apt install npm -y</code>
	*<span style="text-decoration: line-through;"> <code>sudo npm install npm@latest -g</code></span>		*<span style="text-decoration: line-through;"> <code>sudo npm install npm@latest -g</code></span>
	** <span style="color: rgb(224, 62, 45);" >'''NO! DO NOT UPDATE NPM!'''</span>		** <span style="color: rgb(224, 62, 45);">'''NO! DO NOT UPDATE NPM!'''</span>
	** (Doesn't actually seem to change anything on Debian... Updates to 8.3.0 on Ubuntu.)		** (Doesn't actually seem to change anything on Debian... Updates to 8.3.0 on Ubuntu.)

Tinker: /* Start by installing nodejs and the javascript package manager (npm) */

2023-02-24T07:22:00Z

Start by installing nodejs and the javascript package manager (npm)

← Older revision		Revision as of 03:22, 24 February 2023
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	* <code>sudo apt-get install -y build-essential</code>		* <code>sudo apt-get install -y build-essential</code>
	* <code>sudo apt install npm -y</code>		* <code>sudo apt install npm -y</code>
	* <code>sudo npm install npm@latest -g</code>		*<span style="text-decoration: line-through;"> <code>sudo npm install npm@latest -g</code></span>
			** <span style="color: rgb(224, 62, 45);" >'''NO! DO NOT UPDATE NPM!'''</span>
	** (Doesn't actually seem to change anything on Debian... Updates to 8.3.0 on Ubuntu.)		** (Doesn't actually seem to change anything on Debian... Updates to 8.3.0 on Ubuntu.)

Tinker: /* Use npm to install Node-RED */

2022-11-27T05:50:09Z

Use npm to install Node-RED

← Older revision		Revision as of 01:50, 27 November 2022
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	* <code>sudo npm install -g node-red</code>		* <code>sudo npm install -g node-red</code>
	[[File:Node-red install output (2022-05-14).png{{!}}300px{{!}}thumb{{!}}Latest WTF?]]		[[File:Node-red install output (2022-05-14).png{{!}}300px{{!}}left{{!}}thumb{{!}}Latest WTF?]]
	<div style="clear: both"></div>		<div style="clear: both"></div>

Tinker: /* = */

2022-11-08T07:22:40Z

← Older revision		Revision as of 03:22, 8 November 2022
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	<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>		<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>

	=====		===== <span style="color: rgb(224, 62, 45);">'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space... =====
	<span style="color: rgb(224, 62, 45);">'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space... =====

Tinker: /* = */

2022-11-08T07:22:25Z

← Older revision		Revision as of 03:22, 8 November 2022
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	* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>		* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>

	=====		===== <span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific... =====
	<span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific... =====

	<span style="color:#4B0082">To run as a user other than Pi, you need to edit the nodered.service file. To edit this use sudo to edit the file <code>/lib/systemd/system/nodered.service</code> and change the lines 11, 12 and 13.</span>		<span style="color:#4B0082">To run as a user other than Pi, you need to edit the nodered.service file. To edit this use sudo to edit the file <code>/lib/systemd/system/nodered.service</code> and change the lines 11, 12 and 13.</span>

Tinker: /* Then download three required files to their correct locations */

2022-11-08T07:20:58Z

Then download three required files to their correct locations

← Older revision		Revision as of 03:20, 8 November 2022
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	* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>		* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>

	<span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific...		=====
			<span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific... =====

	<span style="color:#4B0082">To run as a user other than Pi, you need to edit the nodered.service file. To edit this use sudo to edit the file <code>/lib/systemd/system/nodered.service</code> and change the lines 11, 12 and 13.</span>		<span style="color:#4B0082">To run as a user other than Pi, you need to edit the nodered.service file. To edit this use sudo to edit the file <code>/lib/systemd/system/nodered.service</code> and change the lines 11, 12 and 13.</span>
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	<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>		<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>

	<span style="color: rgb(224, 62, 45);" >'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space...		=====
			<span style="color: rgb(224, 62, 45);">'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space... =====



	'''i.e.:''' it starts crashing with a message like: <code>'''FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory'''</code> in the logs...		'''i.e.:''' it starts crashing with a message like: <code>'''FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory'''</code> in the logs...

Tinker: /* Then download three required files to their correct locations */

2022-11-08T07:20:14Z

Then download three required files to their correct locations

← Older revision		Revision as of 03:20, 8 November 2022
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	* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-start</nowiki> -O /usr/bin/node-red-start</code>		* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-start</nowiki> -O /usr/bin/node-red-start</code>
	* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>		* <code>sudo wget <nowiki>https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/node-red-stop</nowiki> -O /usr/bin/node-red-stop</code>

	<span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific...		<span style="color:#4B0082">'''Note:'''</span> These 3 files are kinda rpi specific...

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	*<code>sudo vi /lib/systemd/system/nodered.service</code>		*<code>sudo vi /lib/systemd/system/nodered.service</code>

	<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>		<span style="color:#4B0082">Replace the user name "pi" with a user on your actual system...</span>

	<span style="color:~~#4B0082~~">'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space...		<span style="color: rgb(224, 62, 45);" >'''Another Note:'''</span> If you find that you've outgrown Node-Reds available environment space...

	'''i.e.:''' it starts crashing with a message like: <code>'''FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory'''</code> in the logs...		'''i.e.:''' it starts crashing with a message like: <code>'''FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory'''</code> in the logs...

	You can try editing line 16 of <code>/lib/systemd/system/nodered.service</code> and change the number 256 to something larger. (within as-yet undetermined limits...)		You can try editing line 16 of <code>/lib/systemd/system/nodered.service</code> and change the number 256 to something larger. (within as-yet undetermined limits...)

	==== make the two scripts executable ====		==== make the two scripts executable ====