Check_MK Werk 8672: Fixed crash of monitoring core with duplicate hosts

ID: 8672 Title: Fixed crash of monitoring core with duplicate hosts Component: cmc Level: 1 Class: Bug fix Version: 1.4.0i3 When host names were not unique, the Check_MK micro core crashed when the "hostgroups" or "servicegroups" table was queried via Livestatus. This has been fixed now. Note that such a configuration is invalid, but due to another bug (in cmk), it was possible to generate it nevertheless.