Documentation Grafana Agent Flow mode Reference Components reference prometheus.exporter.blackbox

prometheus.exporter.blackbox

The prometheus.exporter.blackbox component embeds blackbox_exporter. blackbox_exporter lets you collect blackbox metrics (probes) and expose them as Prometheus metrics.

Usage

Alloy Copy

prometheus.exporter.blackbox "LABEL" {
  target {
    name    = "example"
    address = "EXAMPLE_ADDRESS"
  }
}

Arguments

The following arguments can be used to configure the exporter’s behavior. Omitted fields take their default values.

Either config_file or config must be specified. The config_file argument points to a YAML file defining which blackbox_exporter modules to use. The config argument must be a YAML document as string defining which blackbox_exporter modules to use. config is typically loaded by using the exports of another component. For example,

• local.file.LABEL.content
• remote.http.LABEL.content
• remote.s3.LABEL.content

The timeout attribute in config or config_file has an effective upper limit of 10 seconds. Refer to the Prometheus blackbox exporter issue 751 for more information.

See blackbox_exporter for details on how to generate a config file.

Blocks

The following blocks are supported inside the definition of prometheus.exporter.blackbox to configure collector-specific options:

target block

The target block defines an individual blackbox target. The target block may be specified multiple times to define multiple targets. name attribute is required and will be used in the target’s job label.

Labels specified in the labels argument will not override labels set by blackbox_exporter.

Exported fields

Component health

prometheus.exporter.blackbox is only reported as unhealthy if given an invalid configuration. In those cases, exported fields retain their last healthy values.

Debug information

prometheus.exporter.blackbox does not expose any component-specific debug information.

Debug metrics

prometheus.exporter.blackbox does not expose any component-specific debug metrics.

Examples

Collect metrics using a blackbox exporter config file

This example uses a prometheus.scrape component to collect metrics from prometheus.exporter.blackbox. It adds an extra label, env="dev", to the metrics emitted by the grafana target. The example target does not have any added labels.

The config_file argument is used to define which blackbox_exporter modules to use. You can use the blackbox example config file.

Alloy Copy

prometheus.exporter.blackbox "example" {
  config_file = "blackbox_modules.yml"

  target {
    name    = "example"
    address = "http://example.com"
    module  = "http_2xx"
  }

  target {
    name    = "grafana" 
    address = "http://grafana.com"
    module  = "http_2xx"
    labels = {
      "env" = "dev",
    }
  }
}

// Configure a prometheus.scrape component to collect Blackbox metrics.
prometheus.scrape "demo" {
  targets    = prometheus.exporter.blackbox.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:

• 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.

Collect metrics using an embedded configuration

This example is the same above with using an embedded configuration:

Alloy Copy

prometheus.exporter.blackbox "example" {
  config = "{ modules: { http_2xx: { prober: http, timeout: 5s } } }"

  target {
    name    = "example"
    address = "http://example.com"
    module  = "http_2xx"
  }

  target {
    name    = "grafana"
    address = "http://grafana.com"
    module  = "http_2xx"
    labels = {
      "env" = "dev",
    }
  }
}

// Configure a prometheus.scrape component to collect Blackbox metrics.
prometheus.scrape "demo" {
  targets    = prometheus.exporter.blackbox.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:

• 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

prometheus.exporter.blackbox has exports that can be consumed by the following components:

• Components that consume Targets