43 lines
1.4 KiB
Markdown
43 lines
1.4 KiB
Markdown
---
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title: 抢占（Preemption）
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id: preemption
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date: 2019-01-31
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full_link: /zh/docs/concepts/configuration/pod-priority-preemption/#preemption
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short_description: >
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Kubernetes 中的抢占逻辑通过驱逐节点上的低优先级 Pod 来帮助悬决的
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Pod 找到合适的节点。
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aka:
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tags:
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- operation
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---
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<!--
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title: Preemption
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id: preemption
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date: 2019-01-31
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full_link: /docs/concepts/configuration/pod-priority-preemption/#preemption
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short_description: >
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Preemption logic in Kubernetes helps a pending Pod to find a suitable Node by evicting low priority Pods existing on that Node.
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aka:
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tags:
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- operation
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-->
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<!--
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Preemption logic in Kubernetes helps a pending {{< glossary_tooltip term_id="pod" >}} to find a suitable {{< glossary_tooltip term_id="node" >}} by evicting low priority Pods existing on that Node.
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-->
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Kubernetes 中的抢占逻辑通过驱逐{{< glossary_tooltip term_id="node" >}}
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上的低优先级{{< glossary_tooltip term_id="pod" >}}
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来帮助悬决的 Pod 找到合适的节点。
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<!--more-->
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<!--
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If a Pod cannot be scheduled, the scheduler tries to [preempt](/docs/concepts/configuration/pod-priority-preemption/#preemption) lower priority Pods to make scheduling of the pending Pod possible.
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-->
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如果一个 Pod 无法调度，调度器会尝试
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[抢占](/zh/docs/concepts/configuration/pod-priority-preemption/#preemption)
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较低优先级的 Pod，以使得悬决的 Pod 有可能被调度。
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