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update glossary id and rename filename (#12635)

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Karen Bradshaw
2019-02-14 03:53:30 -05:00
committed by Kubernetes Prow Robot
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content/en/docs/reference/glossary/preemption.md
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---
title: Preemption
id: preemption
date: 2019-01-31
full_link: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#preemption
short_description: >
Preemption logic in Kubernetes helps a pending Pod to find a suitable Node by evicting low priority Pods existing on that Node.
aka:
tags:
- operation
---
Preemption logic in Kubernetes helps a pending Pod to find a suitable Node by evicting low priority Pods existing on that Node.
<!--more-->
If a Pod cannot be scheduled, the scheduler tries to [preempt](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#preemption) lower priority Pods to make scheduling of the pending Pod possible.