红帽全球峰会1.3. 实例 HA 资源代理
实例 HA 使用 fence_compute、NovaEvacuate 和 comput-unfence-trigger 资源代理来撤离和重新创建的实例（如果计算节点出现故障）。
| 代理名称 | 集群内部的名称 | 角色 |
|---|---|---|
|
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| 在节点不可用时标记用于撤离的 Compute 节点。 |
|
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| 从故障节点驱除实例.此代理在其中一个 Controller 节点上运行。 |
|
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| 释放已隔离的节点，并使节点能够再次运行实例。 |
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