48 lines
2.7 KiB
Markdown
48 lines
2.7 KiB
Markdown
# time collector
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The time collector exposes the Windows Time Service metrics. Note that the Windows Time Service must be running, else metric collection will fail.
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If the Windows Time Service is stopped after collection has started, collector metric values will reset to 0.
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Please note the Time Service perflib counters are only available on [Windows Server 2016 or newer](https://docs.microsoft.com/en-us/windows-server/networking/windows-time-service/windows-server-2016-improvements).
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Metric name prefix | `time`
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Data source | Perflib
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Enabled by default? | No
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## Flags
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None
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## Metrics
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Name | Description | Type | Labels
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-----|-------------|------|-------
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`windows_time_clock_frequency_Adjustment_ppb_total` | Total adjustment made to the local system clock frequency by W32Time in parts per billion (PPB) units. 1 PPB adjustment implies the system clock was adjusted at a rate of 1 nanosecond per second (1 ns/s). The smallest possible adjustment can vary and is expected to be in the order of 100's of PPB. | counter | None
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`windows_time_computed_time_offset_seconds` | Absolute time offset between the system clock and the chosen time source, in seconds. | counter | None
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`windows_time_ntp_client_time_sources` | Active number of NTP Time sources being used by the client. This is a count of active, distinct IP addresses of time servers that are responding to this client's requests. | gauge | None
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`windows_time_ntp_round_trip_delay_seconds` | Total roundtrip delay experienced by the NTP client in receiving a response from the server for the most recent request, in seconds. This is the time elapsed on the NTP client between transmitting a request to the NTP server and receiving a valid response from the server. | gauge | None
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`windows_time_ntp_server_outgoing_responses_total` | Total number of requests responded to by the NTP server. | counter | None
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`windows_time_ntp_server_incoming_requests_total` | Total number of requests received by the NTP server. | counter | None
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### Example metric
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_This collector does not yet have explained examples, we would appreciate your help adding them!_
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## Useful queries
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_This collector does not yet have any useful queries added, we would appreciate your help adding them!_
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## Alerting examples
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**prometheus.rules**
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```yaml
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# Alert on hosts with an NTP client delay of more than 1 second, for a 5 minute period or longer.
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- alert: NTPClientDelay
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expr: windows_time_ntp_round_trip_delay_seconds > 1
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: "NTP client delay: (instance {{ $labels.instance }})"
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description: "RTT for NTP client is greater than 1 second!\nVALUE = {{ $value }}sec\n LABELS: {{ $labels }}"
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```
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