Checkmk dashboard / Site overview shows no data

Hello,

We’re having the same issue. CheckMK dashboard with CheckMK servers and site overview is empty.

CheckMK Raw 2.1.0p9, recently upgraded from 1.6.0p29 via 2.0.0p26. Distributed monitoring with 5 sites. Most of the agents have been updated to 2.1.0p9 and the HW/SW inventory rule has “Status data inventory” enabled. Service discovery says it found a number of items.

Regards,
Bernd