---
title: 调度、抢占和驱逐
weight: 95
content_type: concept
description: >
  在 Kubernetes 中，调度（scheduling）指的是确保 Pod 匹配到合适的节点，
  以便 kubelet 能够运行它们。抢占（Preemption）指的是终止低优先级的 Pod 以便高优先级的 Pod
  可以调度运行的过程。驱逐（Eviction）是在资源匮乏的节点上，主动让一个或多个 Pod 失效的过程。
no_list: true
---

<!--
title: "Scheduling, Preemption and Eviction"
weight: 95
content_type: concept
description: >
  In Kubernetes, scheduling refers to making sure that Pods are matched to Nodes
  so that the kubelet can run them. Preemption is the process of terminating
  Pods with lower Priority so that Pods with higher Priority can schedule on
  Nodes. Eviction is the process of proactively terminating one or more Pods on
  resource-starved Nodes.
no_list: true
-->

<!--
In Kubernetes, scheduling refers to making sure that {{<glossary_tooltip text="Pods" term_id="pod">}}
are matched to {{<glossary_tooltip text="Nodes" term_id="node">}} so that the
{{<glossary_tooltip text="kubelet" term_id="kubelet">}} can run them. Preemption
is the process of terminating Pods with lower {{<glossary_tooltip text="Priority" term_id="pod-priority">}}
so that Pods with higher Priority can schedule on Nodes. Eviction is the process
of terminating one or more Pods on Nodes.
-->
在 Kubernetes 中，调度（scheduling）指的是确保 {{<glossary_tooltip text="Pod" term_id="pod">}}
匹配到合适的{{<glossary_tooltip text="节点" term_id="node">}}，
以便 {{<glossary_tooltip text="kubelet" term_id="kubelet">}} 能够运行它们。
抢占（Preemption）指的是终止低{{<glossary_tooltip text="优先级" term_id="pod-priority">}}的
Pod 以便高优先级的 Pod 可以调度运行的过程。
驱逐（Eviction）是在资源匮乏的节点上，主动让一个或多个 Pod 失效的过程。

<!--
## Scheduling

* [Kubernetes Scheduler](/docs/concepts/scheduling-eviction/kube-scheduler/)
* [Assigning Pods to Nodes](/docs/concepts/scheduling-eviction/assign-pod-node/)
* [Pod Overhead](/docs/concepts/scheduling-eviction/pod-overhead/)
* [Pod Topology Spread Constraints](/docs/concepts/scheduling-eviction/topology-spread-constraints/)
* [Taints and Tolerations](/docs/concepts/scheduling-eviction/taint-and-toleration/)
* [Scheduling Framework](/docs/concepts/scheduling-eviction/scheduling-framework)
* [Dynamic Resource Allocation](/docs/concepts/scheduling-eviction/dynamic-resource-allocation)
* [Scheduler Performance Tuning](/docs/concepts/scheduling-eviction/scheduler-perf-tuning/)
* [Resource Bin Packing for Extended Resources](/docs/concepts/scheduling-eviction/resource-bin-packing/)
* [Pod Scheduling Readiness](/docs/concepts/scheduling-eviction/pod-scheduling-readiness/)
* [Descheduler](https://github.com/kubernetes-sigs/descheduler#descheduler-for-kubernetes)
-->
## 调度

* [Kubernetes 调度器](/zh-cn/docs/concepts/scheduling-eviction/kube-scheduler/)
* [将 Pod 指派到节点](/zh-cn/docs/concepts/scheduling-eviction/assign-pod-node/)
* [Pod 开销](/zh-cn/docs/concepts/scheduling-eviction/pod-overhead/)
* [Pod 拓扑分布约束](/zh-cn/docs/concepts/scheduling-eviction/topology-spread-constraints/)
* [污点和容忍度](/zh-cn/docs/concepts/scheduling-eviction/taint-and-toleration/)
* [动态资源分配](/zh-cn/docs/concepts/scheduling-eviction/dynamic-resource-allocation)
* [调度框架](/zh-cn/docs/concepts/scheduling-eviction/scheduling-framework)
* [调度器性能调试](/zh-cn/docs/concepts/scheduling-eviction/scheduler-perf-tuning/)
* [扩展资源的资源装箱](/zh-cn/docs/concepts/scheduling-eviction/resource-bin-packing/)
* [Pod 调度就绪](/zh-cn/docs/concepts/scheduling-eviction/pod-scheduling-readiness/)
* [Descheduler](https://github.com/kubernetes-sigs/descheduler#descheduler-for-kubernetes)

<!--
## Pod Disruption

* [Pod Priority and Preemption](/docs/concepts/scheduling-eviction/pod-priority-preemption/)
* [Node-pressure Eviction](/docs/concepts/scheduling-eviction/node-pressure-eviction/)
* [API-initiated Eviction](/docs/concepts/scheduling-eviction/api-eviction/)
-->
## Pod 干扰

{{<glossary_definition term_id="pod-disruption" length="all">}}

* [Pod 优先级和抢占](/zh-cn/docs/concepts/scheduling-eviction/pod-priority-preemption/)
* [节点压力驱逐](/zh-cn/docs/concepts/scheduling-eviction/node-pressure-eviction/)
* [API 发起的驱逐](/zh-cn/docs/concepts/scheduling-eviction/api-eviction/)