This plugin checks RD sessions on a Remote Desktop Session Host (RDSH). You can define some users usernames that must be online (e.g., system users for running specific scripts or executing specific tasks ....). You can find the regarding rule under Setup=>Service monitoring rules=>RDSH active user. In this rule, you can define the usernames of one or more users! If one of the users defined in this rule is offline, the check status will switch to critical. If no rule is specified, this check status will always be OK!
The service contains also a perf-o-meter which shows the count of active and disconnected users. The count of active and disconnected users are also available via a service graph.
Important: The Windows agent plugin needs the PowerShell module "PSTerminalServices" to be installed on the monitored machine -> see https://www.powershellgallery.com/packages/PSTerminalServices/1.0 Please adjust the path to the "PSTerminalServices" PowerShell module inside the Windows agent plugin!