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Add documentation for net collector

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Ben Reedy 2019-08-26 20:58:47 +10:00
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docs/collector.net.md
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@ -22,24 +22,40 @@ If given, an interface name needs to *not* match the blacklist regexp in order f
Name | Description | Type | Labels
-----|-------------|------|-------
`wmi_net_bytes_received_total` | _Not yet documented_ | counter | `nic`
`wmi_net_bytes_sent_total` | _Not yet documented_ | counter | `nic`
`wmi_net_bytes_total` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_outbound_discarded` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_outbound_errors` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_received_discarded` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_received_errors` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_received_total` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_received_unknown` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_total` | _Not yet documented_ | counter | `nic`
`wmi_net_packets_sent_total` | _Not yet documented_ | counter | `nic`
`wmi_net_current_bandwidth` | _Not yet documented_ | counter | `nic`
`wmi_net_bytes_received_total` | Total bytes received by interface | counter | `nic`
`wmi_net_bytes_sent_total` | Total bytes transmitted by interface | counter | `nic`
`wmi_net_bytes_total` | Total bytes received and transmitted by interface | counter | `nic`
`wmi_net_packets_outbound_discarded` | Total outbound packets that were chosen to be discarded even though no errors had been detected to prevent transmission | counter | `nic`
`wmi_net_packets_outbound_errors` | Total packets that could not be transmitted due to errors | counter | `nic`
`wmi_net_packets_received_discarded` | Total inbound packets that were chosen to be discarded even though no errors had been detected to prevent delivery | counter | `nic`
`wmi_net_packets_received_errors` | Total packets that could not be received due to errors | counter | `nic`
`wmi_net_packets_received_total` | Total packets received by interface | counter | `nic`
`wmi_net_packets_received_unknown` | Total packets received by interface that were discarded because of an unknown or unsupported protocol | counter | `nic`
`wmi_net_packets_total` | Total packets received and transmitted by interface | counter | `nic`
`wmi_net_packets_sent_total` | Total packets transmitted by interface | counter | `nic`
`wmi_net_current_bandwidth` | Estimate of the interface's current bandwidth in bits per second (bps) | counter | `nic`
### Example metric
_This collector does not yet have explained examples, we would appreciate your help adding them!_
Query the rate of transmitted network traffic
```
rate(wmi_net_bytes_sent_total{instance="localhost"}[2m])
```
## Useful queries
_This collector does not yet have any useful queries added, we would appreciate your help adding them!_
Get total utilisation of network interface as a percentage
```
rate(wmi_net_bytes_total{instance="localhost", nic="Microsoft_Hyper_V_Network_Adapter__1"}[2m]) * 8 / wmi_net_current_bandwidth{instance="locahost", nic="Microsoft_Hyper_V_Network_Adapter__1"} * 100
```
## Alerting examples
_This collector does not yet have alerting examples, we would appreciate your help adding them!_
**prometheus.rules**
```
- alert: NetInterfaceUsage
expr: rate(wmi_net_bytes_total[2m]) * 8 / wmi_net_current_bandwidth * 100 > 90
for: 10m
labels:
severity: high
annotations:
summary: "Network Interface Usage (instance {{ $labels.instance }})"
description: "Network traffic usage is greater than 95% for interface {{ $labels.nic }}\n VALUE = {{ $value }}\n LABELS: {{ $labels }}"
```