13.3. 使用和更改 worker 延迟配置集

要更改 worker 延迟配置集以处理网络延迟，请编辑 node.config 对象以添加配置集的名称。当延迟增加或减少时，您可以随时更改配置集。

您必须一次移动一个 worker 延迟配置集。例如，您无法直接从 Default 配置集移到 LowUpdateSlowReaction worker 延迟配置集。您必须首先从 Default worker 延迟配置集移到 MediumUpdateAverageReaction 配置集，然后再移到 LowUpdateSlowReaction。同样，当返回到 Default 配置集时，您必须首先从低配置集移到中配置集，然后移到 Default。

注意

您还可以在安装 OpenShift Container Platform 集群时配置 worker 延迟配置集。

流程

将默认的 worker 延迟配置集改为：

  1. 中 worke worker 延迟配置集：

    1. 编辑 node.config 对象： 

      $ oc edit nodes.config/cluster

    2. 添加 spec.workerLatencyProfile: MediumUpdateAverageReaction ：

      node.config 对象示例

      apiVersion: config.openshift.io/v1
kind: Node
metadata:
  annotations:
    include.release.openshift.io/ibm-cloud-managed: "true"
    include.release.openshift.io/self-managed-high-availability: "true"
    include.release.openshift.io/single-node-developer: "true"
    release.openshift.io/create-only: "true"
  creationTimestamp: "2022-07-08T16:02:51Z"
  generation: 1
  name: cluster
  ownerReferences:
  - apiVersion: config.openshift.io/v1
    kind: ClusterVersion
    name: version
    uid: 36282574-bf9f-409e-a6cd-3032939293eb
  resourceVersion: "1865"
  uid: 0c0f7a4c-4307-4187-b591-6155695ac85b
spec:
  workerLatencyProfile: MediumUpdateAverageReaction 1

# ...

      1
      指定中 worker 延迟策略。

      随着更改被应用，每个 worker 节点上的调度都会被禁用。

  2. 可选：改为低 worker 延迟配置集：

    1. 编辑 node.config 对象： 

      $ oc edit nodes.config/cluster

    2. 将 spec.workerLatencyProfile 值更改为 LowUpdateSlowReaction ：

      node.config 对象示例

      apiVersion: config.openshift.io/v1
kind: Node
metadata:
  annotations:
    include.release.openshift.io/ibm-cloud-managed: "true"
    include.release.openshift.io/self-managed-high-availability: "true"
    include.release.openshift.io/single-node-developer: "true"
    release.openshift.io/create-only: "true"
  creationTimestamp: "2022-07-08T16:02:51Z"
  generation: 1
  name: cluster
  ownerReferences:
  - apiVersion: config.openshift.io/v1
    kind: ClusterVersion
    name: version
    uid: 36282574-bf9f-409e-a6cd-3032939293eb
  resourceVersion: "1865"
  uid: 0c0f7a4c-4307-4187-b591-6155695ac85b
spec:
  workerLatencyProfile: LowUpdateSlowReaction 1

# ...

      1
      指定使用低 worker 延迟策略。

随着更改被应用，每个 worker 节点上的调度都会被禁用。

验证

  • 当所有节点都返回到 Ready 条件时，您可以使用以下命令查看 Kubernetes Controller Manager 以确保应用它： 

    $ oc get KubeControllerManager -o yaml | grep -i workerlatency -A 5 -B 5

    输出示例

    # ...
    - lastTransitionTime: "2022-07-11T19:47:10Z"
      reason: ProfileUpdated
      status: "False"
      type: WorkerLatencyProfileProgressing
    - lastTransitionTime: "2022-07-11T19:47:10Z" 1
      message: all static pod revision(s) have updated latency profile
      reason: ProfileUpdated
      status: "True"
      type: WorkerLatencyProfileComplete
    - lastTransitionTime: "2022-07-11T19:20:11Z"
      reason: AsExpected
      status: "False"
      type: WorkerLatencyProfileDegraded
    - lastTransitionTime: "2022-07-11T19:20:36Z"
      status: "False"
# ...

    1
    指定配置集被应用并激活。

要将中配置集改为默认，或将默认改为中，编辑 node.config 对象，并将 spec.workerLatencyProfile 参数设置为适当的值。