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47 lines
1.8 KiB
Markdown
47 lines
1.8 KiB
Markdown
---
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title: WindowsCollectorTimeout
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---
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## Meaning
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The collector identified by the `collector` label has reported
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`windows_exporter_collector_timeout == 1` for ten minutes. The collector did
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not finish within the scrape timeout, or its call from an earlier scrape is
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still running and later scrapes skip it until it returns.
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## Impact
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The metrics of this collector are missing or stale on every scrape that times
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out, so dashboards show gaps and alerts on those metrics stop evaluating. A
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collector that never returns can hold a scrape slot and delay the other
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collectors of the host.
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## Diagnosis
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1. Find the collector and compare how long it usually takes:
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```promql
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windows_exporter_collector_timeout{job="windows_exporter"} == 1
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windows_exporter_collector_duration_seconds{job="windows_exporter"}
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```
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2. Compare the duration with the scrape timeout of the job. The exporter
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subtracts `--scrape.timeout-margin` from the `scrape_timeout` that
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Prometheus sends.
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3. Check the exporter log for the collector. WMI and Management Infrastructure
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queries, the Task Scheduler and Windows Update are slow on hosts with many
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objects or a busy WMI provider; the collector's documentation lists the
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expensive options.
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4. Check whether the host was under CPU, disk or memory pressure at the same
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time, and whether a Windows service the collector depends on hangs, for
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example `Winmgmt` for WMI-based collectors.
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## Mitigation
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Raise the `scrape_timeout` of the job within its `scrape_interval`, narrow the
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collector with its include and exclude flags, or move the collector to a
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separate job with a longer timeout. Restart a hanging provider service when the
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log identifies it. Disable the collector on hosts where its data is not needed.
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Confirm `windows_exporter_collector_timeout` returns to `0` and the collector's
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metrics are published again.
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