换句话说，云控制器、集群控制器和存储控制器在前台机器上运行。
In other words, the cloud controller, cluster controller, and storage controller run on the front end machine.
它向节点管理员询问资源信息，做出高级计划决策，并通过向集群控制器发出请求来实现。
It queries node managers for information about resources, makes high level scheduling decisions, and implements them by making requests to cluster controller.
集群控制器 收集关于特定的节点控制器上的 VM 运行的信息，并调度其运行计划，以及管理虚拟实例网络。
The cluster controllers gather information about and schedules VM execution on specific node controllers, as well as manages virtual instance network.
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