第 2 章 Getting started
2.1. Maintenance and support for monitoring
You can configure OpenShift Dedicated monitoring by using supported configuration options in the Cluster Monitoring Operator. Using only supported options ensures your monitoring configuration persists across cluster upgrades and Prometheus version changes.
Configuration paradigms might change across Prometheus releases, and such cases can only be handled gracefully if all configuration possibilities are controlled. If you use unsupported configurations, your changes will disappear because the CMO automatically reconciles any differences and resets any unsupported changes back to the originally defined state by default and by design.
Installing another Prometheus instance is not supported by the Red Hat Site Reliability Engineers (SRE).
2.1.1. Support considerations for monitoring
You can avoid automated configuration resets by understanding and adhering to the supported configuration options for the OpenShift Dedicated monitoring stack. Unsupported modifications are automatically reverted.
Backward compatibility for metrics, recording rules, or alerting rules is not guaranteed.
The following modifications are explicitly not supported:
- Installing custom Prometheus instances on OpenShift Dedicated. A custom instance is a Prometheus custom resource (CR) managed by the Prometheus Operator.
-
Modifying the default platform monitoring components. You should not modify any of the components defined in the
cluster-monitoring-configconfig map. Red Hat SRE uses these components to monitor the core cluster components and Kubernetes services.
2.1.2. Support version matrix for monitoring components
You can verify the supported versions of Prometheus, Alertmanager, and other monitoring components for each OpenShift Dedicated release by consulting this version compatibility matrix for releases 4.12 and later.
| OpenShift Dedicated | Prometheus Operator | Prometheus | Metrics Server | Alertmanager | kube-state-metrics agent | monitoring-plugin | node-exporter agent | Thanos |
|---|---|---|---|---|---|---|---|---|
| 4.20 | 0.85.0 | 3.5.0 | 0.8.0 | 0.28.1 | 2.16.0 | 1.0.0 | 1.9.1 | 0.39.2 |
| 4.19 | 0.81.0 | 3.2.1 | 0.7.2 | 0.28.1 | 2.15.0 | 1.0.0 | 1.9.1 | 0.37.2 |
| 4.18 | 0.78.1 | 2.55.1 | 0.7.2 | 0.27.0 | 2.13.0 | 1.0.0 | 1.8.2 | 0.36.1 |
| 4.17 | 0.75.2 | 2.53.1 | 0.7.1 | 0.27.0 | 2.13.0 | 1.0.0 | 1.8.2 | 0.35.1 |
| 4.16 | 0.73.2 | 2.52.0 | 0.7.1 | 0.26.0 | 2.12.0 | 1.0.0 | 1.8.0 | 0.35.0 |
| 4.15 | 0.70.0 | 2.48.0 | 0.6.4 | 0.26.0 | 2.10.1 | 1.0.0 | 1.7.0 | 0.32.5 |
| 4.14 | 0.67.1 | 2.46.0 | N/A | 0.25.0 | 2.9.2 | 1.0.0 | 1.6.1 | 0.30.2 |
| 4.13 | 0.63.0 | 2.42.0 | N/A | 0.25.0 | 2.8.1 | N/A | 1.5.0 | 0.30.2 |
| 4.12 | 0.60.1 | 2.39.1 | N/A | 0.24.0 | 2.6.0 | N/A | 1.4.0 | 0.28.1 |
The openshift-state-metrics agent and Telemeter Client are OpenShift Dedicated-specific components. Therefore, their versions correspond with the versions of OpenShift Dedicated.
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