telegram-ip-on-boot

Sends the server IP addresses to Telegram on boot

Why ?

I have a few headless servers (Raspberry Pi, Orange Pi, nuc, etc.), and I want be notified when it is online after a reboot, or when setting up a new one.

Installation

install-telegram-ip-on-boot.sh

It creates a bash script and a systemd service which is enabled

/usr/local/bin/telegram-ip-on-boot.sh
/etc/systemd/system/telegram-ip-on-boot.service

curl must be installed.

Configuration

You must define the TELEGRAM_CHAT_ID and TELEGRAM_TOKEN environment variables for the telegram-ip-on-boot service; it can be done with systemd drop-in (/etc/systemd/system/telegram-ip-on-boot.service.d/override.conf file):

sudo systemctl edit telegram-ip-on-boot.service

and paste the following content, using your Telegram Bot Token and Chat ID

[Service]
Environment=TELEGRAM_CHAT_ID=123456
Environment=TELEGRAM_TOKEN=456789:XXXXXXXXXXX

If needed, you can also add/change other options in this drop-in, such as:

[Unit]
# Run after the wireguard has started
After=wg-quick@wg0.service

[Service]
Environment=TELEGRAM_CHAT_ID=123456
Environment=TELEGRAM_TOKEN=456789:XXXXXXXXXXX

Test

sudo systemctl start telegram-ip-on-boot.service

You should receive the server IP addresses on the specified Telegram chat. Otherwise check for errors:

sudo systemctl status telegram-ip-on-boot.service

Uninstall

sudo systemctl disable telegram-ip-on-boot.service
sudo rm /etc/systemd/system/telegram-ip-on-boot.service
sudo rm -rf /etc/systemd/system/telegram-ip-on-boot.service.d/
sudo rm /usr/local/bin/telegram-ip-on-boot.sh

Enjoy