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Documentation Grafana Alloy Reference Components discovery discovery.azure

discovery.azure

discovery.azure discovers Azure Virtual Machines and exposes them as targets.

Usage

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discovery.azure "<LABEL>" {
}

Arguments

The following arguments are supported:

no_proxy can contain IPs, CIDR notations, and domain names. IP and domain names can contain port numbers. proxy_url must be configured if no_proxy is configured.

proxy_from_environment uses the environment variables HTTP_PROXY, HTTPS_PROXY and NO_PROXY (or the lowercase versions thereof). Requests use the proxy from the environment variable matching their scheme, unless excluded by NO_PROXY. proxy_url and no_proxy must not be configured if proxy_from_environment is configured.

proxy_connect_header should only be configured if proxy_url or proxy_from_environment are configured.

Blocks

The following blocks are supported inside the definition of discovery.azure:

Exactly one of the oauth or managed_identity blocks must be specified.

oauth block

The oauth block configures OAuth authentication for the Azure API.

managed_identity block

The managed_identity block configures Managed Identity authentication for the Azure API.

tls_config block

The following pairs of arguments are mutually exclusive and can’t both be set simultaneously:

• ca_pem and ca_file
• cert_pem and cert_file
• key_pem and key_file

When configuring client authentication, both the client certificate (using cert_pem or cert_file) and the client key (using key_pem or key_file) must be provided.

When min_version is not provided, the minimum acceptable TLS version is inherited from Go’s default minimum version, TLS 1.2. If min_version is provided, it must be set to one of the following strings:

• "TLS10" (TLS 1.0)
• "TLS11" (TLS 1.1)
• "TLS12" (TLS 1.2)
• "TLS13" (TLS 1.3)

Exported fields

The following fields are exported and can be referenced by other components:

Each target includes the following labels:

• __meta_azure_subscription_id: The Azure subscription ID.
• __meta_azure_tenant_id: The Azure tenant ID.
• __meta_azure_machine_id: The UUID of the Azure VM.
• __meta_azure_machine_resource_group: The name of the resource group the VM is in.
• __meta_azure_machine_name: The name of the VM.
• __meta_azure_machine_computer_name: The host OS name of the VM.
• __meta_azure_machine_os_type: The OS the VM is running (either Linux or Windows).
• __meta_azure_machine_location: The region the VM is in.
• __meta_azure_machine_private_ip: The private IP address of the VM.
• __meta_azure_machine_public_ip: The public IP address of the VM.
• __meta_azure_machine_tag_*: A tag on the VM. There will be one label per tag.
• __meta_azure_machine_scale_set: The name of the scale set the VM is in.
• __meta_azure_machine_size: The size of the VM.

Each discovered VM maps to a single target. The __address__ label is set to the private_ip:port ([private_ip]:port if the private IP is an IPv6 address) of the VM.

Component health

discovery.azure is only reported as unhealthy when given an invalid configuration. In those cases, exported fields retain their last healthy values.

Debug information

discovery.azure doesn’t expose any component-specific debug information.

Debug metrics

discovery.azure doesn’t expose any component-specific debug metrics.

Example

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discovery.azure "example" {
  port = 80
  subscription_id = <AZURE_SUBSCRIPTION_ID>
  oauth {
      client_id = <AZURE_CLIENT_ID>
      client_secret = <AZURE_CLIENT_SECRET>
      tenant_id = <AZURE_TENANT_ID>
  }
}

prometheus.scrape "demo" {
  targets    = discovery.azure.example.targets
  forward_to = [prometheus.remote_write.demo.receiver]
}

prometheus.remote_write "demo" {
  endpoint {
    url = <PROMETHEUS_REMOTE_WRITE_URL>

    basic_auth {
      username = <USERNAME>
      password = <PASSWORD>
    }
  }
}

Replace the following:

• <AZURE_SUBSCRIPTION_ID>: Your Azure subscription ID.
• <AZURE_CLIENT_ID>: Your Azure client ID.
• <AZURE_CLIENT_SECRET>: Your Azure client secret.
• <AZURE_TENANT_ID>: Your Azure tenant ID.
• <PROMETHEUS_REMOTE_WRITE_URL>: The URL of the Prometheus remote_write-compatible server to send metrics to.
• <USERNAME>: The username to use for authentication to the remote_write API.
• <PASSWORD>: The password to use for authentication to the remote_write API.

Compatible components

discovery.azure has exports that can be consumed by the following components:

• Components that consume Targets