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  • Prometheus metrics for configuration updates
    • ingress_controller_configuration_push_count
    • ingress_controller_translation_count
    • ingress_controller_configuration_push_duration_milliseconds
  • Low-level performance metrics
Kong Ingress Controller
2.4.x
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  • Prometheus metrics
You are browsing documentation for an outdated version. See the latest documentation here.

Prometheus metrics

Kong Ingress Controller, as well as Kong Gateway, both expose Prometheus metrics, under certain conditions:

  • Kong Ingress Controller, since version 2.0, exposes Prometheus metrics for configuration updates.
  • Kong Gateway can expose Prometheus metrics for served requests, if the Prometheus plugin is enabled. See the Using KongPlugin resource guide for information about how to enable a plugin. Also, we provide a specific guide for integration with Prometheus and Grafana as well.

This document is a reference for the former type.

Prometheus metrics for configuration updates

ingress_controller_configuration_push_count

ingress_controller_configuration_push_count (type: counter) provides the number of successful or failed configuration pushes to Kong Gateway.

This metric provides the following labels:

  • protocol describes the configuration protocol in use, which can be db-less or deck.
  • success logs the status of configuration updates. If success is false, an unrecoverable error occurred. If success is true, the push succeeded with no errors.

ingress_controller_translation_count

ingress_controller_translation_count (type: counter) provides the number of translations from the Kubernetes state to the Kong Gateway state.

This metric provides the success label. success logs the status of configuration updates. If success is false, an unrecoverable error occurred. If success is true, the translation succeeded with no errors.

ingress_controller_configuration_push_duration_milliseconds

ingress_controller_configuration_push_duration_milliseconds (type: histogram) is the amount of time, in milliseconds, that it takes to push the configuration to Kong Gateway.

This metric provides the following labels:

  • protocol describes the configuration protocol in use, which can be db-less or deck.
  • success logs the status of configuration updates. If success is false, an unrecoverable error occurred. If success is true, the push succeeded with no errors.

Low-level performance metrics

In addition to the above, Kong Ingress Controller exposes more low-level performance metrics, but these may change from version to version because they are provided by underlying frameworks of Kong Ingress Controller.

A non-exhaustive list of these low-level metrics is described in the following:

  • Controller-runtime metrics
  • Workqueue metrics
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