1.8. 配置事件监听程序为多个命名空间提供服务

流程

1. 为事件监听程序配置集群范围的获取权限。

   1. 设置在 ClusterRoleBinding 和 EventListener 对象中使用的服务帐户名称。例如，el-sa。

      ServiceAccount.yaml 示例

      apiVersion: v1
      kind: ServiceAccount
      metadata:
        name: el-sa
      ---

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   2. 在 ClusterRole.yaml 文件的 rules 部分，为每个事件监听器部署设置适当的权限，以便正常工作集群范围的。

      ClusterRole.yaml 示例

      kind: ClusterRole
      apiVersion: rbac.authorization.k8s.io/v1
      metadata:
        name: el-sel-clusterrole
      rules:
      - apiGroups: ["triggers.tekton.dev"]
        resources: ["eventlisteners", "clustertriggerbindings", "clusterinterceptors", "triggerbindings", "triggertemplates", "triggers"]
        verbs: ["get", "list", "watch"]
      - apiGroups: [""]
        resources: ["configmaps", "secrets"]
        verbs: ["get", "list", "watch"]
      - apiGroups: [""]
        resources: ["serviceaccounts"]
        verbs: ["impersonate"]
      ...

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   3. 使用适当的服务帐户名称和集群角色名称配置集群角色绑定。

      ClusterRoleBinding.yaml 示例

      apiVersion: rbac.authorization.k8s.io/v1
      kind: ClusterRoleBinding
      metadata:
        name: el-mul-clusterrolebinding
      subjects:
      - kind: ServiceAccount
        name: el-sa
        namespace: default
      roleRef:
        apiGroup: rbac.authorization.k8s.io
        kind: ClusterRole
        name: el-sel-clusterrole
      ...

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2. 在事件监听器的 spec 参数中，添加服务帐户名称，如 el-sa。使用事件监听程序要服务的命名空间名称填充 namespaceSelector 参数。

   EventListener.yaml 示例

   apiVersion: triggers.tekton.dev/v1beta1
   kind: EventListener
   metadata:
     name: namespace-selector-listener
   spec:
     taskRunTemplate:
       serviceAccountName: el-sa
     namespaceSelector:
       matchNames:
       - default
       - foo
   ...

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3. 创建具有必要权限的服务帐户，如 foo-trigger-sa。使用它来绑定触发器。

   ServiceAccount.yaml 示例

   apiVersion: v1
   kind: ServiceAccount
   metadata:
     name: foo-trigger-sa
     namespace: foo
   ...

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   RoleBinding.yaml 示例

   apiVersion: rbac.authorization.k8s.io/v1
   kind: RoleBinding
   metadata:
     name: triggercr-rolebinding
     namespace: foo
   subjects:
   - kind: ServiceAccount
     name: foo-trigger-sa
     namespace: foo
   roleRef:
     apiGroup: rbac.authorization.k8s.io
     kind: ClusterRole
     name: tekton-triggers-eventlistener-roles
   ...

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4. 使用适当的触发器模板、触发器绑定和服务帐户名称创建触发器。

   Trigger.yaml 示例

   apiVersion: triggers.tekton.dev/v1beta1
   kind: Trigger
   metadata:
     name: trigger
     namespace: foo
   spec:
     taskRunTemplate:
       serviceAccountName: foo-trigger-sa
     interceptors:
       - ref:
           name: "github"
         params:
           - name: "secretRef"
             value:
               secretName: github-secret
               secretKey: secretToken
           - name: "eventTypes"
             value: ["push"]
     bindings:
       - ref: vote-app
     template:
       ref: vote-app
   ...

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