manugarg

Thanks for sharing — I'm the author of Cloudprober. Always happy to hear thoughts or suggestions (https://github.com/cloudprober/cloudprober discussions or slack linked from the homepage - https://cloudprober.org)

https://github.com/cloudprober/cloudprober (https://cloudprober.org) fits the bill here. It is a simple yet powerful monitoring tool. You can have a minimal as well as an extensive setup with it, without the bloat or the complexity.

(Full disclosure: I'm the author)

I won't trust Harness with anything open source. It's the same company that killed the open source Drone CI after acquiring it. They changed the license such that you could contribute to it but could not use it if your revenue was more than 1 million USD. They didn't fix bugs that were well known to them because they were working on the enterprise version of it.