# Raspberry pi 3 with node-red

**URL:** <https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320>\
**Category:** General\
**Created:** [19 July 2022 12:26 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320 "2022-07-19T12:26:17Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![Bomber75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bomber75/32/64882_2.png) [@Bomber75](https://discourse.nodered.org/u/Bomber75)\
**Post date:** [19 July 2022 12:26 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/1 "2022-07-19T12:26:17Z")

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hi everyone, i am using raspberry pi 3 to use node red, but when i start node red the console shows these errors:

node-red.service: Failed to determine user credentials: No such process  
node-red.service: Failed at step USER spawning/usr/bin/env: No such process

Thanks for your help

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**Author:** ![edje11](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/edje11/32/572_2.png) [@edje11](https://discourse.nodered.org/u/edje11)\
**Post date:** [19 July 2022 12:36 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/2 "2022-07-19T12:36:34Z")

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Hi Bomber,

Welcome to the Nodered forum.  
How did you installed nr on your pi?  
Did you used the installation script as mentioned on [this page](https://nodered.org/docs/getting-started/raspberrypi).

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**Author:** ![Bomber75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bomber75/32/64882_2.png) [@Bomber75](https://discourse.nodered.org/u/Bomber75)\
**Post date:** [19 July 2022 13:37 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/3 "2022-07-19T13:37:08Z")

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Hello,

yes, but it doesn't work

thank you

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [19 July 2022 13:50 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/4 "2022-07-19T13:50:01Z")

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In a terminal run  
`node-red-stop`  
`node-red-start` (note: not node-red start)  
and copy/paste the full output here please. Copy/paste, not a screenshot. Use the `</>` button at the top of the forum entry window when pasting it.

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [19 July 2022 13:55 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/5 "2022-07-19T13:55:00Z")

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Also, have you changed the user name on the pi since you installed node-red? If so then run the script again when logged in as the new user name.

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**Author:** ![Bomber75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bomber75/32/64882_2.png) [@Bomber75](https://discourse.nodered.org/u/Bomber75)\
**Post date:** [20 July 2022 08:27 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/6 "2022-07-20T08:27:04Z")

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Hi Colin,

unfortunately out of desperation I installed everything,  
and the errors never come out.  
the problem is that I can't connect to the network to nod red,  
i saw that there is a npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. nodes to local could that be the problem?  
how can i solve?  
thank you

```auto
 This can take 20-30 minutes on the slower Pi versions - please wait.

Stop Node-RED ✔
Remove old version of Node-RED ✔
Node option not specified : --node14, --node16, or --node18
Leave existing Node.js : v16.16.0 Npm 8.11.0
Clean npm cache -
npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead. nodes to local
Install Node-RED core ✔ 3.0.0
Move global nodes to local -
Leave existing nodes -
Install extra Pi nodes ✔
Add shortcut commands ✔
Update systemd script ✔
Any errors will be logged to /var/log/nodered-install.log

All done.
You can now start Node-RED with the command node-red-start
or using the icon under Menu / Programming / Node-RED
Then point your browser to localhost:1880 or http://{your_pi_ip-address}:1880

Started : mer 20 lug 2022, 10:07:59, CEST
Finished: mer 20 lug 2022, 10:09:53, CEST

Start Node-RED

Once Node-RED has started, point a browser at http://192.168.1.16:1880
On Pi Node-RED works better with the Firefox or Chrome browser

Use node-red-stop to stop Node-RED
Use node-red-start to start Node-RED again
Use node-red-log to view the recent log output
Use sudo systemctl enable nodered.service to autostart Node-RED at every boot
Use sudo systemctl disable nodered.service to disable autostart on boot

To find more nodes and example flows - go to http://flows.nodered.org

Starting as a systemd service.
20 Jul 10:16:10 - [info]
Welcome to Node-RED
===================
20 Jul 10:16:10 - [info] Node-RED version: v3.0.0
20 Jul 10:16:10 - [info] Node.js version: v16.16.0
20 Jul 10:16:10 - [info] Linux 5.15.32-v8+ arm64 LE
20 Jul 10:16:13 - [info] Loading palette nodes
20 Jul 10:16:18 - [info] Settings file : /home/simo/.node-red/settings.js
20 Jul 10:16:18 - [info] Context store : 'default' [module=memory]
20 Jul 10:16:18 - [info] User directory : /home/simo/.node-red
20 Jul 10:16:18 - [warn] Projects disabled : editorTheme.projects.enabled=false
20 Jul 10:16:18 - [info] Flows file : /home/simo/.node-red/flows.json
20 Jul 10:16:18 - [info] Creating new flow file
20 Jul 10:16:18 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
20 Jul 10:16:18 - [warn] Encrypted credentials not found
20 Jul 10:16:18 - [info] Starting flows
20 Jul 10:16:18 - [info] Started flows
20 Jul 10:16:18 - [info] Server now running at http://127.0.0.1:1880/

```

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<div class="post-metadata">

**Author:** ![hardillb](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/hardillb/32/12373_2.png) [@hardillb](https://discourse.nodered.org/u/hardillb)\
**Post date:** [20 July 2022 08:51 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/7 "2022-07-20T08:51:53Z")

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That is just a warning and can be ignored.

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<div class="post-metadata">

**Author:** ![Bomber75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bomber75/32/64882_2.png) [@Bomber75](https://discourse.nodered.org/u/Bomber75)\
**Post date:** [20 July 2022 09:30 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/8 "2022-07-20T09:30:39Z")

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ok solved, i was wrong ip address  
excuse me  
thanks for everything

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [3 August 2022 09:30 UTC](https://discourse.nodered.org/t/raspberry-pi-3-with-node-red/65320/9 "2022-08-03T09:30:56Z")

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