Prometheus Remote Write Source

The Vector prometheus_remote_write source receives metrics from Prometheus.

Configuration

[sources.my_source_id]
type = "prometheus_remote_write" # required
address = "0.0.0.0:9090" # required
  • commonrequiredstring

    address

    The address to accept connections on. The address must include a port.

    • Syntax: literal
  • optionaltable

    auth

    Options for HTTP Basic Authentication.

    • commonrequiredstring

      password

      The basic authentication password.

      • Syntax: literal
    • commonrequiredstring

      username

      The basic authentication user name.

      • Syntax: literal
  • optionaltable

    tls

    Configures the TLS options for incoming connections.

    • optionalstring

      ca_file

      Absolute path to an additional CA certificate file, in DER or PEM format (X.509), or an in-line CA certificate in PEM format.

      • Syntax: literal
    • optionalstring

      crt_file

      Absolute path to a certificate file used to identify this server, in DER or PEM format (X.509) or PKCS#12, or an in-line certificate in PEM format. If this is set, and is not a PKCS#12 archive, key_file must also be set. This is required if enabled is set to true.

      • Syntax: literal
    • optionalbool

      enabled

      Require TLS for incoming connections. If this is set, an identity certificate is also required.

      • Default: false
    • optionalstring

      key_file

      Absolute path to a private key file used to identify this server, in DER or PEM format (PKCS#8), or an in-line private key in PEM format.

      • Syntax: literal
    • optionalstring

      key_pass

      Pass phrase used to unlock the encrypted key file. This has no effect unless key_file is set.

      • Syntax: literal
    • optionalbool

      verify_certificate

      If true, Vector will require a TLS certificate from the connecting host and terminate the connection if the certificate is not valid. If false (the default), Vector will not request a certificate from the client.

      • Default: false

Output

This component outputs the following metric events:

  • counter

    counter

    A single value that can only be incremented or reset to zero value, it cannot be decremented. This metric includes the following tags:

    • * - Any tags present on the metric.

  • gauge

    gauge

    A gauge represents a point-in-time value that can increase and decrease. Vector's internal gauge type represents changes to that value. Gauges should be used to track fluctuations in values, like current memory or CPU usage. This metric includes the following tags:

    • * - Any tags present on the metric.

Telemetry

This component provides the following metrics that can be retrieved through the internal_metrics source. See the metrics section in the monitoring page for more info.

  • counter

    http_error_response_total

    The total number of HTTP error responses for this component. This metric includes the following tags:

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    http_request_errors_total

    The total number of HTTP request errors for this component. This metric includes the following tags:

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    parse_errors_total

    The total number of errors parsing metrics for this component. This metric includes the following tags:

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    processed_bytes_total

    The total number of bytes processed by the component. This metric includes the following tags:

    • component_kind - The Vector component kind.

    • component_name - The Vector component ID.

    • component_type - The Vector component type.

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    processed_events_total

    The total number of events processed by this component. This metric includes the following tags:

    • component_kind - The Vector component kind.

    • component_name - The Vector component ID.

    • component_type - The Vector component type.

    • file - The file that produced the error

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    requests_completed_total

    The total number of requests completed by this component. This metric includes the following tags:

    • component_kind - The Vector component kind.

    • component_name - The Vector component ID.

    • component_type - The Vector component type.

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    requests_received_total

    The total number of requests received by this component. This metric includes the following tags:

    • component_kind - The Vector component kind.

    • component_name - The Vector component ID.

    • component_type - The Vector component type.

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • counter

    events_out_total

    The total number of events emitted by this component. This metric includes the following tags:

    • component_kind - The Vector component kind.

    • component_name - The Vector component ID.

    • component_type - The Vector component type.

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

  • histogram

    request_duration_nanoseconds

    The total request duration in nanoseconds. This metric includes the following tags:

    • instance - The Vector instance identified by host and port.

    • job - The name of the job producing Vector metrics.

How It Works

Context

By default, the prometheus_remote_write source will augment events with helpful context keys as shown in the "Output" section.

Metric type interpretation

The remote_write protocol used by this source transmits only the metric tags, timestamp, and numerical value. No explicit information about the original type of the metric (i.e. counter, histogram, etc) is included. As such, this source makes a guess as to what the original metric type was.

For metrics named with a suffix of _total, this source emits the value as a counter metric. All other metrics are emitted as gauges.

State

This component is stateless, meaning its behavior is consistent across each input.

Transport Layer Security (TLS)

Vector uses Openssl for TLS protocols. You can adjust TLS behavior via the tls.* options.