红帽全球峰会1.3.4.8. 受管集群上的 Prometheus 数据丢失
默认情况下，OpenShift 上的 Prometheus 使用临时存储。Prometheus 会在重启时丢失所有指标数据。
如果在由 Red Hat Advanced Cluster Management 管理的 OpenShift Container Platform 受管集群上启用或禁用了可观察性，observability 端点 Operator 会添加额外的 alertmanager 配置来自动重启本地 Prometheus，以此更新 cluster-monitoring-config ConfigMap。
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