Like Nagios but simpler and smaller and uses Telegram as medium.
(Works 100% on raspbian)
Step 1. Create a new bot with @BotFather on Telegram and get the api token
Step 2. Clone the repository
Step 3. Make the setup.sh executabl and run it
Setp 4. Enter the token confirm the bot by sendung to the bot the password you got from the setup script
Step 5. Enter Hosts in the host file
Step 6. Enhjoy the monitor bot that wakes you up at night via a telegram message ;)