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5.2. 负载均衡策略
负载均衡策略是针对集群设置的。集群由一个或多个可以带有不同硬件参数和可用内存的主机组成,Red Hat Virtualization Manager 会根据集群的负载均衡策略来决定在集群中的哪个主机上运行虚拟机。另外,负载均衡策略还指定了 Mananger 会在什么情况下把过高利用率主机上的虚拟机迁移到其它主机。
数据中心的每个集群都会每隔 1 分钟进行一次负载均衡处理。它会根据系统管理员预先为集群设定的负载均衡策略来决定哪些主机处于过度利用的状态;哪些主机的资源没有被充分利用;哪些主机可以运行从其它主机上迁移来的虚拟机。负载均衡策略选项包括:VM_Evenly_Distributed、Evenly_Distributed、Power_Saving 和 None。

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