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1.3. 自动导入在 AWS 集群上发现的 Red Hat OpenShift 服务

通过使用 Red Hat Advanced Cluster Management 策略实施来自动导入 AWS 集群上的 Red Hat OpenShift Service，从而加快集群管理速度，而无需手动导入单个集群。

需要的访问权限：集群管理员

1.3.1. 先决条件
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  • 您需要安装 Red Hat Advanced Cluster Management。请参阅 Red Hat Advanced Cluster Management 安装和升级文档。
  • 您需要了解 策略。请参阅 Red Hat Advanced Cluster Management 文档中有关治理的介绍。

1.3.2. 创建自动导入策略
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以下策略和程序是如何自动导入所有在 AWS 集群上发现的 Red Hat OpenShift 服务的示例。

通过 CLI 登录到您的 hub 集群，以完成以下流程：

  1. 使用以下示例创建 YAML 文件，并应用引用的更改： 

    apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy-rosa-autoimport
  annotations:
    policy.open-cluster-management.io/standards: NIST SP 800-53
    policy.open-cluster-management.io/categories: CM Configuration Management
    policy.open-cluster-management.io/controls: CM-2 Baseline Configuration
    policy.open-cluster-management.io/description: OpenShift Service on AWS discovered clusters can be automatically imported into
Red Hat Advanced Cluster Management as managed clusters with this policy. You can select and configure those managed clusters so you can import. Configure filters or add an annotation if you do not want all of your OpenShift Service on AWS clusters to be automatically imported.
spec:
  remediationAction: inform
    1 
    
  disabled: false
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: rosa-autoimport-config
        spec:
          object-templates:
            - complianceType: musthave
              objectDefinition:
                apiVersion: v1
                kind: ConfigMap
                metadata:
                  name: discovery-config
                  namespace: open-cluster-management-global-set
                data:
                  rosa-filter: ""
    2 
    
          remediationAction: enforce
          severity: low
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-rosa-autoimport
        spec:
          remediationAction: enforce
          severity: low
          object-templates-raw: |
            {{- /* find the ROSA DiscoveredClusters */ -}}
            {{- range $dc := (lookup "discovery.open-cluster-management.io/v1" "DiscoveredCluster" "" "").items }}
              {{- /* Check for the flag that indicates the import should be skipped */ -}}
              {{- $skip := "false" -}}
              {{- range $key, $value := $dc.metadata.annotations }}
                {{- if and (eq $key "discovery.open-cluster-management.io/previously-auto-imported")
                           (eq $value "true") }}
                  {{- $skip = "true" }}
                {{- end }}
              {{- end }}
              {{- /* if the type is ROSA and the status is Active */ -}}
              {{- if and (eq $dc.spec.status "Active")
                         (contains (fromConfigMap "open-cluster-management-global-set" "discovery-config" "rosa-filter") $dc.spec.displayName)
                         (eq $dc.spec.type "ROSA")
                         (eq $skip "false") }}
            - complianceType: musthave
              objectDefinition:
                apiVersion: discovery.open-cluster-management.io/v1
                kind: DiscoveredCluster
                metadata:
                  name: {{ $dc.metadata.name }}
                  namespace: {{ $dc.metadata.namespace }}
                spec:
                  importAsManagedCluster: true
              {{- end }}
            {{- end }}
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          name: policy-rosa-managedcluster-status
        spec:
          remediationAction: enforce
          severity: low
          object-templates-raw: |
            {{- /* Use the same DiscoveredCluster list to check ManagedCluster status */ -}}
            {{- range $dc := (lookup "discovery.open-cluster-management.io/v1" "DiscoveredCluster" "" "").items }}
              {{- /* Check for the flag that indicates the import should be skipped */ -}}
              {{- $skip := "false" -}}
              {{- range $key, $value := $dc.metadata.annotations }}
                {{- if and (eq $key "discovery.open-cluster-management.io/previously-auto-imported")
                           (eq $value "true") }}
                  {{- $skip = "true" }}
                {{- end }}
              {{- end }}
              {{- /* if the type is ROSA and the status is Active */ -}}
              {{- if and (eq $dc.spec.status "Active")
                         (contains (fromConfigMap "open-cluster-management-global-set" "discovery-config" "rosa-filter") $dc.spec.displayName)
                         (eq $dc.spec.type "ROSA")
                         (eq $skip "false") }}
            - complianceType: musthave
              objectDefinition:
                apiVersion: cluster.open-cluster-management.io/v1
                kind: ManagedCluster
                metadata:
                  name: {{ $dc.spec.displayName }}
                  namespace: {{ $dc.spec.displayName }}
                status:
                  conditions:
                    - type: ManagedClusterConditionAvailable
                      status: "True"
              {{- end }}
            {{- end }}
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    1
    要启用自动导入，请将 spec.remediationAction 改为 enforce。
    2
    可选：在此处指定一个值以选择匹配的 Red Hat OpenShift Service on AWS 集群的子集，这些子集基于已发现的集群名称。rosa-filter 默认没有值，因此过滤器不会限制没有子集值的集群名称。
  2. 运行 oc apply -f <filename>.yaml -n <namespace > 以应用该文件。

1.3.3. 创建放置定义
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您需要创建一个放置定义，为策略部署指定受管集群。

  1. 创建仅选择 local-cluster 的放置定义，该定义是管理的 hub 集群。请参见以下 YAML 示例： 

    apiVersion: cluster.open-cluster-management.io/v1beta1
kind: Placement
metadata:
  name: placement-openshift-plus-hub
spec:
  predicates:
  - requiredClusterSelector:
      labelSelector:
        matchExpressions:
        - key: name
      	    operator: In
      	    values:
      	    - local-cluster
    Copy to Clipboard Toggle word wrap
  2. 运行 oc apply -f placement.yaml -n & lt; namespace >，其中 namespace 与您之前创建的策略的命名空间匹配。

1.3.4. 将导入策略绑定到放置定义
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创建策略和放置后，您需要连接这两个资源。

  1. 使用 PlacementBinding 连接资源。请参阅以下示例，placementRef 引用您创建的 放置，主题 引用您创建的 策略 ： 

    apiVersion: policy.open-cluster-management.io/v1
kind: PlacementBinding
metadata:
  name: binding-policy-rosa-autoimport
placementRef:
  apiGroup: cluster.open-cluster-management.io
  kind: Placement
  name: placement-policy-rosa-autoimport
subjects:
- apiGroup: policy.open-cluster-management.io
  kind: Policy
  name: policy-rosa-autoimport
    Copy to Clipboard Toggle word wrap

  2. 要验证，请运行以下命令： 

    oc get policies.policy.open-cluster-management.io policy-rosa-autoimport -n <namespace>
    Copy to Clipboard Toggle word wrap
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