Merge pull request #93714 from tmalove/ms-osdocs-12096-tlove

OSDOCS#12096: Add the release note for the Observability service

Author: ShaunaDiaz

microshift_release_notes/microshift-4-19-release-notes.adoc

@@ -59,6 +59,15 @@ With this release, configurable transport layer security (TLS) protocols on inte
 
 With this release, you can use the `microshift healthcheck` command with various options to run a basic health check on your applications. For more information, see xref:../microshift_running_apps/microshift-greenboot-workload-health-checks.adoc#microshift-greenboot-workload-health-checks[Greenboot workload health checks].
 
+[id="microshift-4-19-observability-metrics_{context}"]
+==== Collecting metrics using the {microshift-short} Observability service 
+
+With this release, you can configure the {microshift-short} Observability service to collect performance and usage metrics for monitoring resources. The following predefined configurations differ in the amount of data collected:
+
+* Small
+* Medium
+* Large (default)
+
 [id="microshift-4-19-support_{context}"]
 === Support