Having seen many people switch from Prometheus to Checkmk as well, because PromQL is terrible if you don’t spend the entire day on it, I am not entirely convinced, but I also understand the urgency.
A backport to 2.3 should be reasonable and address some of your concerns.
Keep in mind, that on the other side we have to ensure that Checkmk Core functionality is well maintained, which currently includes a rewrite of check_http, MS SQL monitoring, NetApp monitoring, developer APIs (so that MKPs don’t break on updates as easily anymore), adaptations to livestatus for building viewd/graphs/dashboards indepedent of instance size.
All things, I prefer not to strike off the list…
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