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什么是fence，为什么它很重要？

Solution Unverified - Updated -

Issue

  • 什么是fence，为什么它很重要？
  • 为什么fence设备对于RHEL集群是必需的？
  • 是否可能创建一个没有fence设备的集群？
  • 如果我没有配置fence设备，将会出现什么问题？

Environment

  • Red Hat Cluster Suite 4
  • Red Hat Enterprise Linux Server 5 (with the High Availability or Resilient Storage Add Ons)
  • Red Hat Enterprise Linux Server 6 (with the High Availability or Resilient Storage Add Ons)

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