红帽全球峰会第 2 章 Getting started
2.1. Maintenance and support for monitoring
Not all configuration options for the monitoring stack are exposed. To configure OpenShift Dedicated monitoring, configure the Cluster Monitoring Operator (CMO) using the options described in the "Config map reference for the Cluster Monitoring Operator" linked in the Additional resources section. Do not use other configurations, as they are unsupported.
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
The OpenShift Dedicated monitoring has configuration limitations. Understanding them is essential for avoiding automated configuration resets.
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
The following matrix contains information about versions of monitoring components for OpenShift Dedicated 4.12 and later releases:
| 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-specific components. Therefore, their versions correspond with the versions of OpenShift Dedicated.
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