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Doc: update Node-red starting dependency

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This commit is contained in:
Romain Bazile 2021-07-06 14:22:44 +02:00
parent 88f2f72b65
commit f79cc62a60
2 changed files with 14 additions and 1 deletions
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13
docs/expert_setup.md
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@ -551,6 +551,17 @@ bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/mast
``` ```
Type `y` at both prompts to accept the installation and its settings. Type `y` at both prompts to accept the installation and its settings.
### Override Node-RED default settings to make it start after Mosquitto
We need to make sure nodered only starts after Mosquitto. And Mosquitto waits for a network connection to appear before starting.
To change this behavior, we need to override Node-red default setting. We modify the default service unit file with the following:
```sh
sudo mkdir -p /etc/systemd/system/nodered.service.d/
sudo cp /home/pi/PlanktoScope/scripts/raspbian_configuration/etc/systemd/system/nodered.service.d/override.conf /etc/systemd/system/nodered.service.d/override.conf
sudo systemctl daemon-reload
```
#### Enable start on boot and launch Node-RED #### Enable start on boot and launch Node-RED
To run Node-RED when the Pi is turned on or restarted, you need to enable the systemd service by running this command: To run Node-RED when the Pi is turned on or restarted, you need to enable the systemd service by running this command:
```sh ```sh
@ -579,7 +590,7 @@ sudo systemctl restart nodered.service
We need to move the PlanktoScope folder in the right place, in the `projects` subfolder of Node-Red and link this new folder to our `/home/`. To do so, in the terminal type the following:: We need to move the PlanktoScope folder in the right place, in the `projects` subfolder of Node-Red and link this new folder to our `/home/`. To do so, in the terminal type the following::
```sh ```sh
mv /home/pi/PlanktoScope /home/pi/.node-red/projects/ mv /home/pi/PlanktoScope /home/pi/.node-red/projects/
ln -s /home/pi/.node-red/projects/PlanktoScope /home/pi/PlanktoScope ln -s ./.node-red/projects/PlanktoScope /home/pi/PlanktoScope
``` ```
We will now install the missing nodes. These nodes will be used by the PlanktoScope software: We will now install the missing nodes. These nodes will be used by the PlanktoScope software:

2
scripts/raspbian_configuration/etc/systemd/system/nodered.service.d/override.conf Normal file
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@ -0,0 +1,2 @@
[Unit]
After=mosquitto.service