If you need/want a dashboard it's kinda cool. There's a lot of other options that will do something similar, but not via SSH. Crontab can email you directly, no need for a service.
You could also just use systemd timers and do: systemctl --failed -t service
You are missing the biggest value offering here - service such as the one linked here (or healthchecks io that I personally use) will let you know that signal didn't arrive even when other things on your end failed (e.g. cron having a hard time sending failure email due to incorrect smtp credentials).
I use those kind of healthchecks literally for everything, especially for backups - they saved my ass many times over.
For things that actually matters to me, I use systemd timers, Prometheus and alert on failed services, but I do get that this might be a bit much for many setups.
mrweasel · · focus · HN ↗
You could also just use systemd timers and do: systemctl --failed -t service
inezk · · focus · HN ↗
mrweasel · · focus · HN ↗