Program to send out a periodic "OK" message on the "heartbeat" topic for monitoring purposes. By default it sends the message every 15 seconds. Install and run scripts are provided, but the python file can be used on it's own if desired.
Fill out .rename with desired credentials, rename the file to .credentials.
Run sudo ./install.sh from within mqtt-heartbeat/ folder, this installs, configures, and starts the heartbeat service.
./run.sh or even python3 heartbeat.py yourusername yourpassword & can be used to run the python script standalone.