Problem
The Windows Management Instrumentation tends to time out on a regular basis, no matter which version is used or how big the machine is sized. Since WMI is responsible for collecting all performance data within Windows (which can be also viewed with perfmon on the specific machines), this may likely result in Checkmk services go stale, such as "Memory & Pagefile" and "Processor Queue".
The easiest fix: reboot. If you reboot your systems on a regular basis, i.e. once a month due to patching, this problem should occur quite rarely.
Another approach is to increase the WMI timeout in the Checkmk yml-configuration file, which is available since v1.6 (former: ini-file)
Solution
Please follow this guidance to increase the timeout.
| Panel |
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- Got to the agent directory C:\ProgramData\checkmk\agent
Open the check_mk.user.yml file and search for the wmi_timeout section. Remove the '#' and select the value | Code Block |
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global:
...
wmi_timeout: 7 # <- 7 sec, default ist 3
... |
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| Note |
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You can modify this file even you're using the Agent Bakery! |
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