Check_MK: BI & Acknowledgement

6. Acknowledgement

When a host or service is in a non-OK state then the user can acknowledge that problem. Just like the scheduled downtimes, the acknowledgement is saved as an additional attribute. As of Version 1.2.5i1Check_MK BI now also aggregates acknowledgement information up to the top node. The following algorithm is being used for computing this from the states and acknowledgements of the nodes:

A BI aggregation is acknowledged if it would have an OK state under the assumption that all acknowledged hosts and services would be UP or OK resp.

Note: You cannot directly acknowledge a BI aggregate that is in a problem state. You need to acknowledge its underlying host and service problems.

REF: https://mathias-kettner.de/checkmk_bi.html