Kubernetes Ingress Controller
2.2.x
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Prometheus metrics
Kubernetes Ingress Controller, as well as Kong Gateway, both expose Prometheus metrics, under certain conditions:
- Kubernetes 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 on 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.
| Metric name | Description |
|---|---|
ingress_controller_configuration_push_count[success=true|false][protocol=db-less|deck] |
Count of successful or failed configuration pushes to Kong. 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[success=true|false] |
Count of translations from Kubernetes state to Kong state. 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[success=true|false][protocol=db-less|deck] |
The amount of time, in milliseconds, that it takes to push the configuration to Kong. 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. |
In addition to the above, Kubernetes Ingress Controller exposes more low-level performance metrics - these may however change from version to version, as they are provided by underlying frameworks of Kubernetes Ingress Controller.
A non-exhaustive list of these low-level metrics is present in the following places: