1.7. Cryostat 的调度选项

在 Red Hat OpenShift Web 控制台中，您可以使用 Red Hat build of Cryostat Operator 定义用于调度 Cryostat 应用程序及其生成的报告到节点的策略。

您可以在 Red Hat OpenShift 的 YAML 配置文件中定义 Node Selector、Affinities、Affinities 和 Tolerations 定义。您必须在 Cryostat 应用的 spec.SchedulingOptions 属性和报告生成器 sidecar 的 spec.ReportOptions.SchedulingOptions 属性下定义这些定义。通过指定 SchedulingOptions 属性，Cryostat 应用程序及其报告生成器 sidecar pod 将调度到满足调度条件的节点。

目标节点应用程序可以从 Cryostat 实例接收 sidecar 报告更新。

显示定义调度选项的 Cryostat CR 的 YAML 配置示例

kind: Cryostat
apiVersion: operator.cryostat.io/v1beta1
metadata:
  name: cryostat
spec:
  schedulingOptions:
    nodeSelector:
      node: good
    affinity:
      nodeAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
          nodeSelectorTerms:
          - matchExpressions:
            - key: node
              operator: In
              values:
              - good
              - better
      podAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchLabels:
              pod: good
          topologyKey: topology.kubernetes.io/zone
      podAntiAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchLabels:
              pod: bad
          topologyKey: topology.kubernetes.io/zone
    tolerations:
    - key: node
      operator: Equal
      value: ok
      effect: NoExecute
  reportOptions:
    replicas: 1
    schedulingOptions:
      nodeSelector:
        node: good
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: node
                operator: In
                values:
                - good
                - better
        podAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchLabels:
                pod: good
            topologyKey: topology.kubernetes.io/zone
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchLabels:
                pod: bad
            topologyKey: topology.kubernetes.io/zone
      tolerations:
      - key: node
        operator: Equal
        value: ok
        effect: NoExecute

kind: Cryostat
apiVersion: operator.cryostat.io/v1beta1
metadata:
  name: cryostat
spec:
  schedulingOptions:
    nodeSelector:
      node: good
    affinity:
      nodeAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
          nodeSelectorTerms:
          - matchExpressions:
            - key: node
              operator: In
              values:
              - good
              - better
      podAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchLabels:
              pod: good
          topologyKey: topology.kubernetes.io/zone
      podAntiAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchLabels:
              pod: bad
          topologyKey: topology.kubernetes.io/zone
    tolerations:
    - key: node
      operator: Equal
      value: ok
      effect: NoExecute
  reportOptions:
    replicas: 1
    schedulingOptions:
      nodeSelector:
        node: good
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: node
                operator: In
                values:
                - good
                - better
        podAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchLabels:
                pod: good
            topologyKey: topology.kubernetes.io/zone
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchLabels:
                pod: bad
            topologyKey: topology.kubernetes.io/zone
      tolerations:
      - key: node
        operator: Equal
        value: ok
        effect: NoExecute

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另外，您可以打开 Red Hat OpenShift Web 控制台，创建一个 Cryostat 实例，然后在该 Cryostat 实例的 SchedulingOptions 和 reportOptions. SchedulingOptions 选项中定义 Affinities 和 Tolerations 定义。

图 1.8. OpenShift Web 控制台中的 Report Options 和 Scheduling Options 面板

Red Hat OpenShift web 控制台中的 *Report Options* 和 *Scheduling Options* 面板

1.7. Cryostat 的调度选项

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