xin.li
50 lines
1.5 KiB
Markdown
50 lines
1.5 KiB
Markdown
---
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id: pod-disruption-budget
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title: Pod Disruption Budget
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full-link: /zh/docs/concepts/workloads/pods/disruptions/
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date: 2019-02-12
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short_description: >
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Pod Disruption Budget 是这样一种对象：它保证在主动中断（ voluntary disruptions）时，多实例应用的 {{< glossary_tooltip text="Pod" term_id="pod" >}} 不会少于一定的数量。
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aka:
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- PDB
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related:
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- pod
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- container
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tags:
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- operation
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---
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<!--
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---
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id: pod-disruption-budget
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title: Pod Disruption Budget
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full-link: /docs/concepts/workloads/pods/disruptions/
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date: 2019-02-12
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short_description: >
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An object that limits the number of {{< glossary_tooltip text="Pods" term_id="pod" >}} of a replicated application, that are down simultaneously from voluntary disruptions.
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aka:
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- PDB
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related:
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- pod
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- container
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tags:
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- operation
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---
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-->
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<!--
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A [Pod Disruption Budget](/docs/concepts/workloads/pods/disruptions/) allows an
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application owner to create an object for a replicated application, that ensures
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a certain number or percentage of Pods with an assigned label will not be voluntarily
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evicted at any point in time.
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Involuntary disruptions cannot be prevented by PDBs; however they
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do count against the budget.
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-->
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[Pod 干扰预算（Pod Disruption Budget，PDB）](/zh/docs/concepts/workloads/pods/disruptions/)
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使应用所有者能够为多实例应用创建一个对象，来确保一定数量的具有指定标签的 Pod 在任何时候都不会被主动驱逐。
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<!--more-->
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PDB 无法防止非主动的中断，但是会计入预算（budget）。
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