Prometheus Scrape Source

The Vector prometheus_scrape source collects metrics from Prometheus client.

Configuration

[sources.my_source_id]
type = "prometheus_scrape" # required
endpoints = ["http://localhost:9090/metrics"] # required
scrape_interval_secs = 15 # optional, default, seconds
  • optionaltable

    auth

    Configures the authentication strategy.

    • commonrequiredstring

      password

      The basic authentication password.

      • Syntax: literal
    • enumcommonrequiredstring

      strategy

      The authentication strategy to use.

      • Syntax: literal
      • Enum, must be one of: "basic" "bearer"
    • commonrequiredstring

      token

      The token to use for bearer authentication

      • Syntax: literal
    • commonrequiredstring

      user

      The basic authentication user name.

      • Syntax: literal
  • commonrequired[string]

    endpoints

    Endpoints to scrape metrics from.

    • WARNING: You must explicitly add the path to your endpoints. Vector will _not_ automatically add `/metics`.
  • commonoptionaluint

    scrape_interval_secs

    The interval between scrapes, in seconds.

    • Default: 15 (seconds)
  • 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 inline CA certificate in PEM format.

      • Syntax: literal
    • commonoptionalstring

      crt_file

      Absolute path to a certificate file used to identify this connection, in DER or PEM format (X.509) or PKCS#12, or an inline certificate in PEM format. If this is set and is not a PKCS#12 archive, key_file must also be set.

      • Syntax: literal
    • commonoptionalstring

      key_file

      Absolute path to a private key file used to identify this connection, in DER or PEM format (PKCS#8), or an inline private key in PEM format. If this is set, crt_file must also be set.

      • 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_hostname

      If true (the default), Vector will validate the configured remote host name against the remote host's TLS certificate. Do NOT set this to false unless you understand the risks of not verifying the remote hostname.

      • Default: true

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.

  • gauge

    histogram

    Also called a "timer". A histogram samples observations (usually things like request durations or response sizes) and counts them in configurable buckets. It also provides a sum of all observed values. This metric includes the following tags:

    • * - Any tags present on the metric.

  • gauge

    summary

    Similar to a histogram, a summary samples observations (usually things like request durations and response sizes). While it also provides a total count of observations and a sum of all observed values, it calculates configurable quantiles over a sliding time window. 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

    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.

How It Works

Context

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

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.