sudo apt update
sudo apt install monit
sudo systemctl start monit
sudo systemctl enable monit
sudo systemctl status monit

/etc/monit/conf-enabled/monit.conf erstellen:

set httpd port 2812 and
    use address localhost  # only accept connection from localhost (drop if you use M/Monit)
    allow localhost        # allow localhost to connect to the server and
    allow admin:monit      # require user 'admin' with password 'monit'