红帽全球峰会27.6.2.3. 一个节点上的 EBS 卷的最大数目
默认情况下，OpenShift Container Platform 最多支持把 39 个 EBS 卷附加到一个节点。这个限制与 AWS Volume Limits 一致。
通过设置环境变量 KUBE_MAX_PD_VOLS， 可将 OpenShift Container Platform 配置为具有更高的限制。但是 AWS 需要对附加设备有一个特定的命名方案（AWS Device Naming），它最多只支持 52 个卷。这将把通过 OpenShift Container Platform 附加到节点中的卷数量限制为 52。
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