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Add OS type meta label to Azure SD (#3863)

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There is currently no way to differentiate Windows instances from Linux
ones. This is needed when you have a mix of node_exporters /
wmi_exporters for OS-level metrics and you want to have them in separate
scrape jobs.

This change allows you to do just that. Example:

```
  - job_name: 'node'
    azure_sd_configs:
      - <azure_sd_config>
    relabel_configs:
      - source_labels: [__meta_azure_machine_os_type]
        regex: Linux
        action: keep
```

The way the vendor'd AzureSDK provides to get the OsType is a bit
awkward - as far as I can tell, this information can only be gotten from
the startup disk. Newer versions of the SDK appear to improve this a
bit (by having OS information in the InstanceView), but the current way
still works.
This commit is contained in:
Pedro Araújo 2018-02-19 15:40:57 +00:00 committed by Brian Brazil
parent f0fd701309
commit 575f665944
2 changed files with 3 additions and 0 deletions
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2
discovery/azure/azure.go
View file

@ -40,6 +40,7 @@ const (
azureLabelMachineID = azureLabel + "machine_id"
azureLabelMachineResourceGroup = azureLabel + "machine_resource_group"
azureLabelMachineName = azureLabel + "machine_name"
azureLabelMachineOSType = azureLabel + "machine_os_type"
azureLabelMachineLocation = azureLabel + "machine_location"
azureLabelMachinePrivateIP = azureLabel + "machine_private_ip"
azureLabelMachineTag = azureLabel + "machine_tag_"
@ -247,6 +248,7 @@ func (d *Discovery) refresh() (tg *targetgroup.Group, err error) {
labels := model.LabelSet{
azureLabelMachineID: model.LabelValue(*vm.ID),
azureLabelMachineName: model.LabelValue(*vm.Name),
azureLabelMachineOSType: model.LabelValue(vm.Properties.StorageProfile.OsDisk.OsType),
azureLabelMachineLocation: model.LabelValue(*vm.Location),
azureLabelMachineResourceGroup: model.LabelValue(r.ResourceGroup),
}

1
docs/configuration/configuration.md
View file

@ -260,6 +260,7 @@ The following meta labels are available on targets during relabeling:
* `__meta_azure_machine_id`: the machine ID
* `__meta_azure_machine_location`: the location the machine runs in
* `__meta_azure_machine_name`: the machine name
* `__meta_azure_machine_os_type`: the machine operating system
* `__meta_azure_machine_private_ip`: the machine's private IP
* `__meta_azure_machine_resource_group`: the machine's resource group
* `__meta_azure_machine_tag_<tagname>`: each tag value of the machine