= Prometheus Trait

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The Prometheus trait configures a Prometheus-compatible endpoint. It also creates a `PodMonitor` resource,
so that the endpoint can be scraped automatically, when using the Prometheus operator.

The metrics are exposed using MicroProfile Metrics.

WARNING: The creation of the `PodMonitor` resource requires the https://github.com/coreos/prometheus-operator[Prometheus Operator]
custom resource definition to be installed.
You can set `pod-monitor` to `false` for the Prometheus trait to work without the Prometheus Operator.

The Prometheus trait is disabled by default.


This trait is available in the following profiles: **Kubernetes, Knative, OpenShift**.

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== Configuration

Trait properties can be specified when running any integration with the CLI:
[source,console]
----
$ kamel run --trait prometheus.[key]=[value] --trait prometheus.[key2]=[value2] integration.groovy
----
The following configuration options are available:

[cols="2m,1m,5a"]
|===
|Property | Type | Description

| prometheus.enabled
| bool
| Can be used to enable or disable a trait. All traits share this common property.

| prometheus.pod-monitor
| bool
| Whether a `PodMonitor` resource is created (default `true`).

| prometheus.pod-monitor-labels
| []string
| The `PodMonitor` resource labels, applicable when `pod-monitor` is `true`.

|===

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