Back then, there were not many cluster management tools available and as such, most admins created home-grown suites of tools that deployed, monitored, and managed their clusters.
在当时,可用的集群管理工具并不多,因此大多数管理员用自己开发的工具集来部署、监视和管理他们的集群。
What most web applications need is commodity clusters with lots of low power and low cost RAM.
多数web应用所需要的是有低功率、低成本RAM的商业集群。
For clusters with more than two nodes, the most reliable configuration includes two non-IP networks on each node.
对于超过两个节点的集群,最可靠的配置是在每个节点上包含两个非ip网络。
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