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This article describes how to enable monitoring of Windows terminal server sessions (RDP sessions), facilitating performance counters.

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colour	Green
title	LAST TESTED ON CHECKMK 2.3.0P1

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title	Table of Contents

Table of Contents

Step-by-step guide

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Using the agent bakery (preferred)

Enable transfer of performance counters through the Windows agent, as seen in the screenshot:

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Setup → Agents → Windows, Linux, Solaris, AIX → Agent rules → Windows Performance-Counter objects → Edit rule: Windows Performance-Counter objects

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Add rule

Screenshot of adding a new rule for windows performance counter objects. Section name is ts_sessions. Counter object name or number is Terminal Services. Image Added

After you have created the needed rule, don't forget to bake a new agent and to install it on the Windows host. Without this, the agent rule you have configured will not work.

Manually by changing the check_mk.user.yml file

Warning
Do not do this , if you followed the Agent Bakery section above!

Enable transfer of performance counters through the Windows agent by adding the following configuration snippet to your check_mk.user.yml.:

Go to C:\ProgramData\checkmk\agent\check_mk.user.yml and activate the counter section by uncommenting the following section:

Code Block

language	bash
theme	RDark
title	C:\ProgramData\checkmk\agent\check_mk.user.yml

winperf:
  counters:
  - Terminal Services: ts_sessions
  enabled: true

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Output inside the Windows agent

After you have done the configuration, a section similar to this will be added to the agent output (this might be useful for troubleshooting):

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language	bash
theme	RDark
title	C:\ProgramData\checkmk\agent\check_mk.user.yml

<<<winperf_ts_sessions>>>
1728393192.07 6324 10000000
2 1 rawcount
4 1 rawcount
6 2 rawcount

Optional, you can change the default behavior by using one of the below rules

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Example of rule configuration:

Setup > Services > Service monitoring rules > Windows Terminal Server Sessions > Add rule: Windows Terminal Server Sessions

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The result

After successfully following this guide, you will now discover a new service:

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Screenshot of a Sessions services. Displaying as an OK state. Image Added

Server side check plugin: https://checkmk.com/de/integrations/

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Tip
For more information, you can read the Check manual page of winperf_ts_sessions

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