63 lines
3.0 KiB
Markdown
63 lines
3.0 KiB
Markdown
# net collector
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The net collector exposes metrics about network interfaces
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Metric name prefix | `net`
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Data source | Perflib
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Classes | [`Win32_PerfRawData_Tcpip_NetworkInterface`](https://technet.microsoft.com/en-us/security/aa394340(v=vs.80))
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Enabled by default? | Yes
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## Flags
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### `--collector.net.nic-whitelist`
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If given, an interface name needs to match the whitelist regexp in order for the corresponding metrics to be reported
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### `--collector.net.nic-blacklist`
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If given, an interface name needs to *not* match the blacklist regexp in order for the corresponding metrics to be reported
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## Metrics
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Name | Description | Type | Labels
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-----|-------------|------|-------
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`windows_net_bytes_received_total` | Total bytes received by interface | counter | `nic`
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`windows_net_bytes_sent_total` | Total bytes transmitted by interface | counter | `nic`
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`windows_net_bytes_total` | Total bytes received and transmitted by interface | counter | `nic`
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`windows_net_packets_outbound_discarded_total` | Total outbound packets that were chosen to be discarded even though no errors had been detected to prevent transmission | counter | `nic`
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`windows_net_packets_outbound_errors_total` | Total packets that could not be transmitted due to errors | counter | `nic`
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`windows_net_packets_received_discarded_total` | Total inbound packets that were chosen to be discarded even though no errors had been detected to prevent delivery | counter | `nic`
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`windows_net_packets_received_errors_total` | Total packets that could not be received due to errors | counter | `nic`
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`windows_net_packets_received_total` | Total packets received by interface | counter | `nic`
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`windows_net_packets_received_unknown_total` | Total packets received by interface that were discarded because of an unknown or unsupported protocol | counter | `nic`
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`windows_net_packets_total` | Total packets received and transmitted by interface | counter | `nic`
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`windows_net_packets_sent_total` | Total packets transmitted by interface | counter | `nic`
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`windows_net_current_bandwidth_bytes` | Estimate of the interface's current bandwidth in bytes per second | gauge | `nic`
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### Example metric
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Query the rate of transmitted network traffic
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```
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rate(windows_net_bytes_sent_total{instance="localhost"}[2m])
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```
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## Useful queries
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Get total utilisation of network interface as a percentage
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```
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rate(windows_net_bytes_total{instance="localhost", nic="Microsoft_Hyper_V_Network_Adapter__1"}[2m]) / windows_net_current_bandwidth_bytes{instance="localhost", nic="Microsoft_Hyper_V_Network_Adapter__1"} * 100
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```
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## Alerting examples
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**prometheus.rules**
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```yaml
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- alert: NetInterfaceUsage
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expr: rate(windows_net_bytes_total[2m]) / windows_net_current_bandwidth_bytes * 100 > 95
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for: 10m
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labels:
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severity: high
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annotations:
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summary: "Network Interface Usage (instance {{ $labels.instance }})"
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description: "Network traffic usage is greater than 95% for interface {{ $labels.nic }}\n VALUE = {{ $value }}\n LABELS: {{ $labels }}"
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```
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