Is het online service

Simple node application for the Raspberry Pi checking the network connection...

Start-up script

Let's create a new service using the following command:
sudo systemctl edit --force --full start-ishetonline.service

Paste the following code:

[Unit]
Description=IsHetOnlineService
Wants=network-online.target
After=network-online.target
StartLimitIntervalSec=90
StartLimitBurst=3

[Service]
Type=simple
User=pi
WorkingDirectory=/home/pi/ishetonline/
ExecStart=/home/pi/ishetonline/start_service.sh
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

Save and exit the file.

Check the status of the service:
systemctl status start-ishetonline.service

Enable the service:
sudo systemctl enable start-ishetonline.service

Start the service:
sudo systemctl start start-ishetonline.service

More information: Running a script after an internet connection is established