Naemon VS prometheus-msteams

Looks like Nagios Core has the same behavior as Naemon Core: https://github.com/naemon/naemon-core/pull/92

With Statusengine you can add a database backend. I for example only use the Naemon fork of Nagios Core for many years now.

You can also look into Naemon, is a fork of nagios (uses even the same config files, have support for nagios plugins and have a way prettier web interface and dashboard making tools https://www.naemon.io

This open-source project "Nagios Plugins for Linux" provides several binary plugins for monitoring (physical and virtual) Linux hosts with Nagios and Nagios-compatible monitoring systems like Icinga and Naemon.

I switched to Naemon years ago. The communication with the devs is very pleasant.

This was my first thought as well, and I think it checks all the boxes in op’s list. The bridge between alertmanager and teams is the only extra that will need some extra work, but I am currently using https://github.com/prometheus-msteams/prometheus-msteams at work and that works pretty well for us.

Nice idea but it's way to coupled with slack. Would it be possible to add something more generic to the mix? E.g a team integration via prometheus-msteams? (https://github.com/prometheus-msteams/prometheus-msteams)