Merge pull request #28176 from chenrui333/zh/resync-scheduling-eviction-files

zh: resync scheduling files

content/zh/docs/concepts/scheduling-eviction/_index.md

@@ -1,5 +1,53 @@
 ---
-title: 调度和驱逐 (Scheduling and Eviction)
+title: 调度，抢占和驱逐
 weight: 90
-description: 在Kubernetes中，调度 (Scheduling) 指的是确保 Pods 匹配到合适的节点，以便 kubelet 能够运行它们。驱逐 (Eviction) 是在资源匮乏的节点上，主动让一个或多个 Pods 失效的过程。
+content_type: concept
+description: >
+  在Kubernetes中，调度 (scheduling) 指的是确保 Pods 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 Pods 以便高优先级的 Pods 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 Pods 失效的过程。
 ---
+
+<!--
+---
+title: "Scheduling, Preemption and Eviction"
+weight: 90
+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.
+-->
+
+<!-- ## Scheduling -->
+
+## 调度
+
+* [Kubernetes 调度器](/zh/docs/concepts/scheduling-eviction/kube-scheduler/)
+* [将 Pods 指派到节点](/zh/docs/concepts/scheduling-eviction/assign-pod-node/)
+* [Pod 开销](/zh/docs/concepts/scheduling-eviction/pod-overhead/)
+* [污点和容忍](/zh/docs/concepts/scheduling-eviction/taint-and-toleration/)
+* [调度框架](/zh/docs/concepts/scheduling-eviction/scheduling-framework)
+* [调度器的性能调试](/zh/docs/concepts/scheduling-eviction/scheduler-perf-tuning/)
+* [扩展资源的资源装箱](/zh/docs/concepts/scheduling-eviction/resource-bin-packing/)
+
+<!-- ## Pod Disruption -->
+
+## Pod 干扰
+
+* [Pod 优先级和抢占](/zh/docs/concepts/scheduling-eviction/pod-priority-preemption/)
+* [节点压力驱逐](/zh/docs/concepts/scheduling-eviction/node-pressure-eviction/)
+* [API发起的驱逐](/zh/docs/concepts/scheduling-eviction/api-eviction/)

content/zh/docs/concepts/scheduling-eviction/assign-pod-node.md

@@ -136,8 +136,18 @@ with a standard set of labels. See [Well-Known Labels, Annotations and Taints](/
 -->
 ## 插曲：内置的节点标签 {#built-in-node-labels}
 
-除了你[添加](#attach-labels-to-node)的标签外，节点还预先填充了一组标准标签。
-参见[常用标签、注解和污点](/zh/docs/reference/labels-annotations-taints/)。
+除了你[添加](#step-one-attach-label-to-the-node)的标签外，节点还预制了一组标准标签。
+参见这些[常用的标签，注解以及污点](/zh/docs/reference/labels-annotations-taints/)：
+
+* [`kubernetes.io/hostname`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#kubernetes-io-hostname)
+* [`failure-domain.beta.kubernetes.io/zone`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#failure-domainbetakubernetesiozone)
+* [`failure-domain.beta.kubernetes.io/region`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#failure-domainbetakubernetesioregion)
+* [`topology.kubernetes.io/zone`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#topologykubernetesiozone)
+* [`topology.kubernetes.io/region`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#topologykubernetesiozone)
+* [`beta.kubernetes.io/instance-type`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#beta-kubernetes-io-instance-type)
+* [`node.kubernetes.io/instance-type`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#nodekubernetesioinstance-type)
+* [`kubernetes.io/os`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#kubernetes-io-os)
+* [`kubernetes.io/arch`](/zh/docs/reference/kubernetes-api/labels-annotations-taints/#kubernetes-io-arch)
 
 {{< note >}}
 <!--
@@ -828,4 +838,3 @@ resource allocation decisions.
 一旦 Pod 分配给 节点，kubelet 应用将运行该 pod 并且分配节点本地资源。
 [拓扑管理器](/zh/docs/tasks/administer-cluster/topology-manager/)
 可以参与到节点级别的资源分配决定中。
-

content/zh/docs/concepts/scheduling-eviction/pod-overhead.md

@@ -1,9 +1,21 @@
 ---
 title: Pod 开销
 content_type: concept
-weight: 20
+weight: 30
 ---
 
+<!--
+---
+reviewers:
+- dchen1107
+- egernst
+- tallclair
+title: Pod Overhead
+content_type: concept
+weight: 30
+---
+-->
+
 <!-- overview -->
 
 {{< feature-state for_k8s_version="v1.18" state="beta" >}}
@@ -226,8 +238,9 @@ cgroups directly on the node.
 
 First, on the particular node, determine the Pod identifier:
 -->
-在工作负载所运行的节点上检查 Pod 的内存 cgroups. 在接下来的例子中，将在该节点上使用具备 CRI 兼容的容器运行时命令行工具 [`crictl`](https://github.com/kubernetes-sigs/cri-tools/blob/master/docs/crictl.md). 
-这是一个展示 PodOverhead 行为的进阶示例，用户并不需要直接在该节点上检查 cgroups.
+在工作负载所运行的节点上检查 Pod 的内存 cgroups. 在接下来的例子中，
+将在该节点上使用具备 CRI 兼容的容器运行时命令行工具
+[`crictl`](https://github.com/kubernetes-sigs/cri-tools/blob/master/docs/crictl.md)。
 
 首先在特定的节点上确定该 Pod 的标识符：
 
@@ -298,8 +311,11 @@ running with a defined Overhead. This functionality is not available in the 1.9
 kube-state-metrics, but is expected in a following release. Users will need to build kube-state-metrics
 from source in the meantime.
 -->
-在 [kube-state-metrics](https://github.com/kubernetes/kube-state-metrics) 中可以通过 `kube_pod_overhead` 指标来协助确定何时使用 PodOverhead 以及协助观察以一个既定开销运行的工作负载的稳定性。
-该特性在 kube-state-metrics 的 1.9 发行版本中不可用，不过预计将在后续版本中发布。在此之前，用户需要从源代码构建 kube-state-metrics. 
+在 [kube-state-metrics](https://github.com/kubernetes/kube-state-metrics) 中可以通过
+`kube_pod_overhead` 指标来协助确定何时使用 PodOverhead 以及协助观察以一个既定
+开销运行的工作负载的稳定性。
+该特性在 kube-state-metrics 的 1.9 发行版本中不可用，不过预计将在后续版本中发布。
+在此之前，用户需要从源代码构建 kube-state-metrics。
 
 ## {{% heading "whatsnext" %}}
 
@@ -310,4 +326,3 @@ from source in the meantime.
 
 * [RuntimeClass](/zh/docs/concepts/containers/runtime-class/)
 * [PodOverhead 设计](https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/688-pod-overhead)
-

content/zh/docs/concepts/scheduling-eviction/resource-bin-packing.md

@@ -1,16 +1,18 @@
 ---
 title: 扩展资源的资源装箱
 content_type: concept
-weight: 30
+weight: 80
 ---
 <!--
+---
 reviewers:
 - bsalamat
 - k82cn
 - ahg-g
 title: Resource Bin Packing for Extended Resources
 content_type: concept
-weight: 30
+weight: 80
+---
 -->
 
 <!-- overview -->
@@ -249,4 +251,3 @@ CPU            = resourceScoringFunction((2+6),8)
 NodeScore   =  (5 * 5) + (7 * 1) + (10 * 3) / (5 + 1 + 3)
             =  7
 ```
-

content/zh/docs/concepts/scheduling-eviction/scheduler-perf-tuning.md

@@ -1,14 +1,16 @@
 ---
 title: 调度器性能调优
 content_type: concept
-weight: 80
+weight: 100
 ---
 <!--
+---
 reviewers:
 - bsalamat
 title: Scheduler Performance Tuning
 content_type: concept
-weight: 80
+weight: 100
+---
 -->
 
 <!-- overview -->
@@ -81,11 +83,11 @@ kube-scheduler 的表现等价于设置值为 100。
 To change the value, edit the
 [kube-scheduler configuration file](/docs/reference/config-api/kube-scheduler-config.v1beta1/)
 and then restart the scheduler.
-In many cases, the configuration file can be found at `/etc/kubernetes/config/kube-scheduler.yaml`. 
+In many cases, the configuration file can be found at `/etc/kubernetes/config/kube-scheduler.yaml`
  -->
-要修改这个值，编辑 [kube-scheduler 的配置文件](/zh/docs/reference/config-api/kube-scheduler-config.v1beta1/)，
-之后重启调度器。
-在很多场合下，配置文件位于 `/etc/kubernetes/config/kube-scheduler.yaml`。
+要修改这个值，先编辑 [kube-scheduler 的配置文件](/zh/docs/reference/config-api/kube-scheduler-config.v1beta1/)
+然后重启调度器。
+大多数情况下，这个配置文件是 `/etc/kubernetes/config/kube-scheduler.yaml`。
 
 <!--
 After you have made this change, you can run
@@ -195,7 +197,7 @@ minimum value of 50 nodes.
 另外，还有一个 50 个 Node 的最小值是硬编码在程序中。
 
 <!--
-In clusters with less than 50 feasible nodes, the scheduler still
+{{< note >}} In clusters with less than 50 feasible nodes, the scheduler still
 checks all the nodes because there are not enough feasible nodes to stop
 the scheduler's search early.
 
@@ -294,8 +296,8 @@ After going over all the Nodes, it goes back to Node 1.
 -->
 在评估完所有 Node 后，将会返回到 Node 1，从头开始。
 
-
 ## {{% heading "whatsnext" %}}
 
-* 查阅 [kube-scheduler 配置参考 (v1beta1)](/zh/docs/reference/config-api/kube-scheduler-config.v1beta1/)
+<!-- * Check the [kube-scheduler configuration reference (v1beta1)](/docs/reference/config-api/kube-scheduler-config.v1beta1/) -->
 
+* 参见 [kube-scheduler 配置参考 (v1beta1)](/zh/docs/reference/config-api/kube-scheduler-config.v1beta1/)

content/zh/docs/concepts/scheduling-eviction/scheduling-framework.md

@@ -1,15 +1,17 @@
 ---
 title: 调度框架
 content_type: concept
-weight: 70
+weight: 90
 ---
 
 <!--
+---
 reviewers:
 - ahg-g
 title: Scheduling Framework
 content_type: concept
-weight: 70
+weight: 90
+---
 -->
 
 <!-- overview -->
@@ -17,17 +19,15 @@ weight: 70
 {{< feature-state for_k8s_version="1.15" state="alpha" >}}
 
 <!--
-The scheduling framework is a plugable architecture for the Kubernetes Scheduler.
-It adds a new set of "plugin" APIs to the existing scheduler. Plugins are compiled
-into the scheduler. The APIs allow most scheduling features to be implemented as
-plugins, while keeping the
-scheduling "core" simple and maintainable. Refer to the [design proposal of the
+The scheduling framework is a pluggable architecture for the Kubernetes scheduler.
+It adds a new set of "plugin" APIs to the existing scheduler. Plugins are compiled into the scheduler. The APIs allow most scheduling features to be implemented as plugins, while keeping the
+scheduling "core" lightweight and maintainable. Refer to the [design proposal of the
 scheduling framework][kep] for more technical information on the design of the
 framework.
 -->
-调度框架是 Kubernetes 调度器的一种可插入架构。
-调度框架向现有的调度器增加了一组新的“插件（Plugin）” API。
-插件被编译到调度器程序中。
+
+调度框架是面向 Kubernetes 调度器的一种插件架构，
+它为现有的调度器添加了一组新的“插件” API。插件会被编译到调度器之中。
 这些 API 允许大多数调度功能以插件的形式实现，同时使调度“核心”保持简单且可维护。
 请参考[调度框架的设计提案](https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/624-scheduling-framework/README.md)
 获取框架设计的更多技术信息。
@@ -333,9 +333,9 @@ is approved, it is sent to the [PreBind](#pre-bind) phase.
  -->
 {{< note >}}
 尽管任何插件可以访问 “等待中” 状态的 Pod 列表并批准它们
-（参阅 [`FrameworkHandle`](https://git.k8s.io/enhancements/keps/sig-scheduling/624-scheduling-framework#frameworkhandle)）。
-我们希望只有被允许的插件可以批准处于“等待中”状态的预留 Pod 的绑定。
-一旦 Pod 被批准了，它将进入到[预绑定](#pre-bind) 阶段。
+(查看 [`FrameworkHandle`](https://git.k8s.io/enhancements/keps/sig-scheduling/624-scheduling-framework#frameworkhandle))。
+我们期望只有允许插件可以批准处于 “等待中” 状态的预留 Pod 的绑定。
+一旦 Pod 被批准了，它将发送到[预绑定](#pre-bind) 阶段。
 {{< /note >}}
 
 <!--
@@ -472,4 +472,3 @@ Learn more at [multiple profiles](/docs/reference/scheduling/config/#multiple-pr
 如果你正在使用 Kubernetes v1.18 或更高版本，你可以将一组插件设置为
 一个调度器配置文件，然后定义不同的配置文件来满足各类工作负载。
 了解更多关于[多配置文件](/zh/docs/reference/scheduling/config/#multiple-profiles)。
-

content/zh/docs/concepts/scheduling-eviction/taint-and-toleration.md

@@ -357,9 +357,9 @@ true. The following taints are built in:
    the NodeCondition `Ready` being "`False`".
  * `node.kubernetes.io/unreachable`: Node is unreachable from the node
    controller. This corresponds to the NodeCondition `Ready` being "`Unknown`".
- * `node.kubernetes.io/out-of-disk`: Node becomes out of disk.
  * `node.kubernetes.io/memory-pressure`: Node has memory pressure.
  * `node.kubernetes.io/disk-pressure`: Node has disk pressure.
+ * `node.kubernetes.io/pid-pressure`: Node has PID pressure.
  * `node.kubernetes.io/network-unavailable`: Node's network is unavailable.
  * `node.kubernetes.io/unschedulable`: Node is unschedulable.
  * `node.cloudprovider.kubernetes.io/uninitialized`: When the kubelet is started
@@ -371,9 +371,9 @@ true. The following taints are built in:
 
  * `node.kubernetes.io/not-ready`：节点未准备好。这相当于节点状态 `Ready` 的值为 "`False`"。
  * `node.kubernetes.io/unreachable`：节点控制器访问不到节点. 这相当于节点状态 `Ready` 的值为 "`Unknown`"。
- * `node.kubernetes.io/out-of-disk`：节点磁盘耗尽。
  * `node.kubernetes.io/memory-pressure`：节点存在内存压力。
  * `node.kubernetes.io/disk-pressure`：节点存在磁盘压力。
+ * `node.kubernetes.io/pid-pressure`: 节点的 PID 压力。
  * `node.kubernetes.io/network-unavailable`：节点网络不可用。
  * `node.kubernetes.io/unschedulable`: 节点不可调度。
  * `node.cloudprovider.kubernetes.io/uninitialized`：如果 kubelet 启动时指定了一个 "外部" 云平台驱动，
@@ -486,7 +486,7 @@ breaking.
 
   * `node.kubernetes.io/memory-pressure`
   * `node.kubernetes.io/disk-pressure`
-  * `node.kubernetes.io/out-of-disk` (*only for critical pods*)
+  * `node.kubernetes.io/pid-pressure` (1.14 or later)
   * `node.kubernetes.io/unschedulable` (1.10 or later)
   * `node.kubernetes.io/network-unavailable` (*host network only*)
 -->
@@ -498,7 +498,7 @@ DaemonSet 控制器自动为所有守护进程添加如下 `NoSchedule` 容忍
 
   * `node.kubernetes.io/memory-pressure`
   * `node.kubernetes.io/disk-pressure`
-  * `node.kubernetes.io/out-of-disk` (*只适合关键 Pod*)
+  * `node.kubernetes.io/pid-pressure` (1.14 或更高版本)
   * `node.kubernetes.io/unschedulable` (1.10 或更高版本)
   * `node.kubernetes.io/network-unavailable` (*只适合主机网络配置*)