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[WIP] OBSDOCS-1446: Monitoring 4.18 release notes, new features #87962

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[WIP] OBSDOCS-1446: Monitoring 4.18 release notes, new features #87962

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37 changes: 37 additions & 0 deletions release_notes/ocp-4-18-release-notes.adoc
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Expand Up @@ -450,6 +450,43 @@ Updated boot images has been promoted to GA for Amazon Web Services (AWS) cluste
[id="ocp-release-notes-monitoring_{context}"]
=== Monitoring

The in-cluster monitoring stack for this release includes the following new and modified features.

[id="ocp-4-18-monitoring-updates-to-monitoring-stack-components-and-dependencies"]
==== Updates to monitoring stack components and dependencies

This release includes the following version updates for in-cluster monitoring stack components and dependencies:

* Metrics Server to 0.7.2
* Prometheus 2.55.1
* Prometheus Operator to 0.78.1
* Thanos to 0.36.1

[id="ocp-4-18-monitoring-changes-to-alerting-rules"]
==== Changes to alerting rules

[NOTE]
====
Red{nbsp}Hat does not guarantee backward compatibility for recording rules or alerting rules.
====

* Added cross-project alerting rules for user workload monitoring, which allows you to create generic alerting rules that get applied to multiple user-defined projects instead of having individual `PrometheusRule` objects in each user project.

[id="ocp-4-18-monitoring-configure-scrape-and-evaluation-intervals-for-uwm-prometheus"]
==== Configure scrape and evaluation intervals for user workload monitoring Prometheus

With this update, you can configure the intervals between consecutive scrapes and between rule evaluations for user-workload monitoring Prometheus.

[id="ocp-4-18-monitoring-early-validation-for-configurations-in-monitoring-config-maps"]
==== Added early validation for the monitoring configurations in monitoring config maps

This update introduces a validation for changes to monitoring configurations in `cluster-monitoring-config` and `user-workload-monitoring-config` config maps to provide shorter feedback loops and enhance user experience.

[id="ocp-4-18-monitoring-configure-cross-project-alerting-rules-for-uwm"]
==== Added the proxy environment variables to Alertmanager containers

With this update, Alertmanager uses the proxy environment variables, therefore, you can enable proxying for all alert receivers.

[id="ocp-release-notes-networking_{context}"]
=== Networking

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