Server tends to fail. When this happens you should be the first to know!
By having an extra layer of monitoring tools you can easily get notified by mail when something goes wrong with the server. For those of you that don’t know how to hard code this into your Linux/windows or whichever server I recommend checking out uptimerobot.com. This will ping your server at set intervals and send you an email if it’s not responding. The pro plan even sends you SMS it seems.