MON-3500: Enable sending exemplars over RW in UWM

Author: rexagod

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Note: This CHANGELOG is only for the monitoring team to track all monitoring related changes. Please see OpenShift release notes for official changes.
 
+## 4.15
+
+- [#2161](https://github.com/openshift/cluster-monitoring-operator/pull/2161) Add `PrometheusRestrictedConfig.RemoteWrite[].SendExemplars`.
+
 ## 4.14
 
 - [#1937](https://github.com/openshift/cluster-monitoring-operator/pull/1937) Disables btrfs collector

Documentation/api.md

@@ -525,6 +525,7 @@ The `RemoteWriteSpec` resource defines the settings for remote write storage.
 | proxyUrl | string | Defines an optional proxy URL. |
 | queueConfig | *[monv1.QueueConfig](https://github.com/prometheus-operator/prometheus-operator/blob/v0.66.0/Documentation/api.md#queueconfig) | Allows tuning configuration for remote write queue parameters. |
 | remoteTimeout | string | Defines the timeout value for requests to the remote write endpoint. |
+| sendExemplars | *bool | Enables sending of exemplars over remote write. Note that exemplar-storage itself must be enabled using the `spec.enableFeature` option for exemplars to be scraped in the first place. |
 | sigv4 | *monv1.Sigv4 | Defines AWS Signature Version 4 authentication settings. |
 | tlsConfig | *[monv1.SafeTLSConfig](https://github.com/prometheus-operator/prometheus-operator/blob/v0.66.0/Documentation/api.md#safetlsconfig) | Defines TLS authentication settings for the remote write endpoint. |
 | url | string | Defines the URL of the remote write endpoint to which samples will be sent. |

Documentation/openshiftdocs/modules/remotewritespec.adoc

@@ -41,6 +41,8 @@ link:prometheusrestrictedconfig.adoc[PrometheusRestrictedConfig]
 
 |remoteTimeout|string|Defines the timeout value for requests to the remote write endpoint.
 
+|sendExemplars|*bool|Enables sending of exemplars over remote write. Note that exemplar-storage itself must be enabled using the `spec.enableFeature` option for exemplars to be scraped in the first place.
+
 |sigv4|*monv1.Sigv4|Defines AWS Signature Version 4 authentication settings.
 
 |tlsConfig|*monv1.SafeTLSConfig|Defines TLS authentication settings for the remote write endpoint.

pkg/manifests/manifests.go

@@ -3622,6 +3622,7 @@ func addRemoteWriteConfigs(clusterID string, rw []monv1.RemoteWriteSpec, rwTarge
 			ProxyURL:            target.ProxyURL,
 			MetadataConfig:      target.MetadataConfig,
 			OAuth2:              target.OAuth2,
+			SendExemplars:       target.SendExemplars,
 		}
 		if target.TLSConfig != nil {
 			rwConf.TLSConfig = &monv1.TLSConfig{

pkg/manifests/types.go

@@ -753,6 +753,10 @@ type RemoteWriteSpec struct {
 	QueueConfig *monv1.QueueConfig `json:"queueConfig,omitempty"`
 	// Defines the timeout value for requests to the remote write endpoint.
 	RemoteTimeout string `json:"remoteTimeout,omitempty"`
+	// Enables sending of exemplars over remote write. Note that
+	// exemplar-storage itself must be enabled using the `spec.enableFeature`
+	// option for exemplars to be scraped in the first place.
+	SendExemplars *bool `json:"sendExemplars,omitempty"`
 	// Defines AWS Signature Version 4 authentication settings.
 	Sigv4 *monv1.Sigv4 `json:"sigv4,omitempty"`
 	// Defines TLS authentication settings for the remote write endpoint.