2.5. 管理安全策略

运行以下命令来创建策略：

kubectl create -f policy.yaml -n <namespace>

定义策略使用的模板。要编辑 .yaml 文件，请添加 templates 字段来定义模板。您的策略可能类似以下 YAML 文件：

apiVersion: policy.open-cluster-management.io/v1
kind: Policy
metadata:
  name: policy1
spec:
  remediationAction: "enforce" # or inform
  disabled: false # or true
  namespaces:
    include: ["default"]
    exclude: ["kube*"]
  policy-templates:
    - objectDefinition:
        apiVersion: policy.open-cluster-management.io/v1
        kind: ConfigurationPolicy
        metadata:
          namespace: kube-system # will be inferred
          name: operator
        spec:
          remediationAction: "inform"
          object-templates:
            complianceType: "musthave" # at this level, it means the role must exist and must have the following rules
            apiVersion: rbac.authorization.k8s.io/v1
            kind: Role
            metadata:
              name: example
            objectDefinition:
              rules:
                - complianceType: "musthave" # at this level, it means if the role exists the rule is a musthave
                  apiGroups: ["extensions", "apps"]
                  resources: ["deployments"]
                  verbs: ["get", "list", "watch", "create", "delete","patch"]

定义 PlacementRule。务必更改 PlacementRule，以通过 clusterNames 或 clusterLabels 指定需要应用策略的集群。查看创建和管理放置规则。您 PlacementRule 可能类似如下内容：

apiVersion: apps.open-cluster-management.io/v1
kind: PlacementRule
metadata:
  name: placement1
spec:
  clusterConditions:
    - type: ManagedClusterConditionAvailable
      status: "True"
  clusterNames:
  - "cluster1"
  - "cluster2"
  clusterLabels:
    matchLabels:
      cloud: IBM

定义一个 PlacementBinding 来绑定您的策略和 PlacementRule。您 PlacementBinding 可能类似以下 YAML 示例：

apiVersion: policy.open-cluster-management.io/v1
kind: PlacementBinding
metadata:
  name: binding1
placementRef:
  name: placement1
  apiGroup: apps.open-cluster-management.io
  kind: PlacementRule
subjects:
- name: policy1
  apiGroup: policy.mcm.ibm.com
  kind: Policy

为以下参数输入或选择值：

查看以下 Red Hat Advanced Cluster Management for Kubernetes 安全策略定义示例。复制并粘贴策略的 YAML 文件。

您的 YAML 文件可能类似以下策略：

 apiVersion: policy.open-cluster-management.io/v1
 kind: Policy
 metadata:
   name: policy-pod
   annotations:
     policy.open-cluster-management.io/categories: 'SystemAndCommunicationsProtections,SystemAndInformationIntegrity'
     policy.open-cluster-management.io/controls: 'control example'
     policy.open-cluster-management.io/standards: 'NIST,HIPAA'
 spec:
   complianceType: musthave
   namespaces:
     exclude: ["kube*"]
     include: ["default"]
   object-templates:
   - complianceType: musthave
     objectDefinition:
       apiVersion: v1
       kind: Pod
       metadata:
         name: nginx1
       spec:
         containers:
         - name: nginx
           image: 'nginx:1.7.9'
           ports:
           - containerPort: 80
   remediationAction: enforce
   disabled: false

 ---
 apiVersion: apps.open-cluster-management.io/v1
 kind: PlacementBinding
 metadata:
   name: binding-pod
 placementRef:
   name: placement-pod
   kind: PlacementRule
   apiGroup: apps.open-cluster-management.io
 subjects:
 - name: policy-pod
   kind: Policy
   apiGroup: policy.mcm.ibm.com

 ---
 apiVersion: apps.open-cluster-management.io/v1
 kind: PlacementRule
 metadata:
   name: placement-pod
 spec:
   clusterConditions:
     - type: ManagedClusterConditionAvailable
       status: "True"
   clusterLabels:
     matchLabels:
       cloud: "IBM"