rfdez

{
  "name": "Electricity Notification",
  "nodes": [
    {
      "parameters": {
        "rule": {
          "interval": [
            {
              "triggerAtHour": 21
            }

rfdez

• First steps on a linux server
  • Update the system
  • Change the root password
  • Disable the default account
  • Make sudo require a password
  • Change the hostname
  • SSH
    • Prevent root login
    • Key-Based Authentication
• Change the default port

rfdez

Directly boot your Raspberry PI 4 from a USB drive

Configure the Raspberry PI 4 to boot from USB

You will need a SD Card. Write one of these bootloader images into the SD Card:

- SD Card Boot – Boot from SD Card if available, otherwise boot from USB.
- USB Boot – Boot from USB if available, otherwise boot from SD Card.

Update the Raspberry PI 4 boot code EEPROM