1.14.5.2. 放置示例

您需要通过在该命名空间中创建一个 ManagedClusterSetBinding 来最少将一个 ManagedClusterSet 绑定到一个命名空间。注：您需要在 managedclustersets/bind 的虚拟子资源上对 CREATE 进行基于角色的访问权限。请参见以下示例：

  • 您可以使用 labelSelector 选择 ManagedClusters。请参阅以下示例，其中 labelSelector 仅与带有标签 vendor: OpenShift 的集群匹配： 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement1
  namespace: ns1
spec:
  predicates:
    - requiredClusterSelector:
        labelSelector:
          matchLabels:
            vendor: OpenShift

  • 您可以使用 claimSelector 选择 ManagedClusters。请参阅以下示例，其中 claimSelector 仅与带有 us-west-1 的 region.open-cluster-management.io 的集群匹配： 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement2
  namespace: ns1
spec:
  predicates:
    - requiredClusterSelector:
        claimSelector:
          matchExpressions:
            - key: region.open-cluster-management.io
              operator: In
              values:
                - us-west-1

  • 您可以从特定的 clusterSets 中选择 ManagedClusters。请参阅以下示例，其中 claimSelector 仅与 clusterSets: clusterset1 clusterset2 匹配： 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement3
  namespace: ns1
spec:
  clusterSets:
    - clusterset1
    - clusterset2
  predicates:
    - requiredClusterSelector:
        claimSelector:
          matchExpressions:
            - key: region.open-cluster-management.io
              operator: In
              values:
                - us-west-1

  • 选择所需的 ManagedClusters 数量。请参阅以下示例，其中 numberOfClusters 为 3 ： 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement4
  namespace: ns1
spec:
  numberOfClusters: 3
  predicates:
    - requiredClusterSelector:
        labelSelector:
          matchLabels:
            vendor: OpenShift
        claimSelector:
          matchExpressions:
            - key: region.open-cluster-management.io
              operator: In
              values:
                - us-west-1

  • 选择具有最大可分配内存的集群。

    注： 与 Kubernetes Node Allocatable 类似，"可分配"这里定义为每个集群中 pod 可用的计算资源数量。 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement6
  namespace: ns1
spec:
  numberOfClusters: 1
  prioritizerPolicy:
    configurations:
      - name: ResourceAllocatableMemory

  • 选择具有最大可分配 CPU 和内存的集群，并区分资源更改。 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement7
  namespace: ns1
spec:
  numberOfClusters: 2
  prioritizerPolicy:
    configurations:
      - name: ResourceAllocatableCPU
        weight: 2
      - name: ResourceAllocatableMemory
        weight: 2

  • 选择具有最大可分配内存的集群，并固定放置决定。 

    apiVersion: cluster.open-cluster-management.io/v1alpha1
kind: Placement
metadata:
  name: placement8
  namespace: ns1
spec:
  numberOfClusters: 4
  prioritizerPolicy:
    mode: Exact
    configurations:
      - name: ResourceAllocatableMemory
      - name: Steady
        weight: 3