Either http://deadmanssnitch.com/ or if you have an existing solution for posting metrics, alert on missing data. - Source: Hacker News / 26 days ago

You're looking for a dead man's switch. https://deadmanssnitch.com is a good hosted service or Uptime Kuma (https://github.com/louislam/uptime-kuma) can be configured to do the same thing. - Source: Hacker News / about 1 month ago

Deadmanssnitch.com — Monitoring for cron jobs. One free snitch (monitor), more if you refer others to sign up. - Source: dev.to / 4 months ago

If you are ok with a Saas and if it's just scheduled jobs that you are monitoring, there are a number of monitoring tools where you tell when job completes (with a http request) and a missing ping (after a grace period) means that it failed. I think https://deadmanssnitch.com/ may have been the original service for this. https://healthchecks.io/ has a fairly generous free tier that I use now. There are others that... - Source: Hacker News / 11 months ago

There's a great service already existing with a riff on that name, even - https://deadmanssnitch.com/ DMS is useful for stuff like crons where you're trying to monitor an event that happened rather than whether a service is online. No way to ping a cronjob from the outside world, but the cron can report that it ran successfully. - Source: Hacker News / 11 months ago

UI Jar: This is one of the better ones for “general” category. Check it out yourself. It has some extensive filters. Source: 11 months ago